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| TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 * * * * * Very Low-Dropout Voltage . . . Less Than 400 mV at 300 mA Standby Mode Reduces Current to a Maximum of 150 A Output Regulated to Within 2% Over Full Temperature Range Packaged in Thin Shrink Small-Outline Package Only 10-F Load Capacitor Required to Maintain Regulation at IO = 300 mA PW PACKAGE (TOP VIEW) description The TL75LPxxQ devices are low-dropout voltage regulators specifically targeted for use in portable applications. These devices generate fixed output voltages at loads of up to 300 mA with only 400-mV dropout over the full temperature range. Low-dropout voltage regulators are commonly used in battery-powered systems such as analog and digital cellular phones. The TL75LPxx family of regulators feature a TTL/CMOS-compatible enable terminal, which can be used to switch the device into standby mode. This feature reduces power consumption when the instrument is not active. Less that 150 A is required when the unit is disabled. GND/HEAT SINK GND/HEAT SINK GND/HEAT SINK NC NC ENABLE NC INPUT INPUT INPUT 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 NC NC NC NC NC OUTPUT OUTPUT NC NC NC GND/HEAT SINK - These terminals have an internal connection to ground and must be grounded. NC - No internal connection The PW package is only available in left-end taped and reeled (order device TL75LPxxQPWLE). typical application schematic INPUT VBAT OUTPUT VO 2% at 300 mA CO = 10 F TL75LPxxQ 0.1 F ENABLE 2V DISABLE GND/ HEAT SINK A concern in many new designs is conservation of ENABLE board space and overall reduction in equipment size. The thin shrink small-outline package (TSSOP) minimizes board area and reduces component height. This package has a maximum height of less than 1.1 mm (compared to the 1.75 mm of a standard 8-pin SO package) and dimensions of only 6.5 mm by 4.4 mm. All low-dropout regulators require an external capacitor at the output to maintain regulation and stability. To further reduce board area and cost, the TL75LPxx devices are designed to require a minimum capacitor of only 10 F. This is 1/10 the typical value used by many other low-dropout regulators. To simplify the task of choosing a suitable capacitor, TI has included in this datasheet a list of recommended capacitors for use with these devices. The TL75LPxxQ devices are characterized for operation over TJ = - 40C to 125C. AVAILABLE OPTIONS TJ MIN 4.75 4.9 - 40C to 125C 7.84 9.8 11.76 VO TYP 4.85 5 8 10 12 MAX 4.95 5.1 8.16 10.2 12.24 PACKAGED DEVICES TSSOP (PW) TL75LP48QPWLE TL75LP05QPWLE TL75LP08QPWLE TL75LP10QPWLE TL75LP12QPWLE CHIP FORM (Y) TL75LP48Y TL75LP05Y TL75LP08Y TL75LP10Y TL75LP12Y The PW package is available only in tape and reel. Chip forms are tested at 25C. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 1995, Texas Instruments Incorporated POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-1 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 functional block diagram INPUT Current Limiting ENABLE Enable 28 V Bandgap - + Overvoltage/ Thermal Shutdown OUTPUT GND/HEAT SINK TL75LPxxY chip information This chip, when properly assembled, displays characteristics similar to the TL75LPxx. Thermal compression or ultrasonic bonding can be used on the doped aluminum bonding pads. The chip can be mounted with conductive epoxy or a gold-silicon preform. (1) TL75LPxxY (5) (4) BONDING PAD ASSIGNMENTS INPUT OUTPUT OUTPUT SENSE (5) (3) (6) (4) (6) (2) ENABLE POWER SIGNAL GND GND CHIP THICKNESS: 11 MILS TYPICAL 92 BONDING PADS: 7 X 7 MILS MINIMUM TJ max = 150C TOLERANCES ARE 10%. ALL DIMENSIONS ARE IN MILS. (1) (2) (3) NOTE A. NOTE: SIGNAL GND and POWER GND must be tied together as close to device as possible. OUTPUT and OUTPUT SENSE should be tied together. 123 3-2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC, (See Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 mA Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 150C Continuous total power dissipation (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to network terminal ground. 2. Refer to Figures 1 and 2 to avoid exceeding the design maximum virtual junction temperature; these ratings should not be exceeded. Due to variation in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be activated at power levels slightly above or below the rated dissipation. DISSIPATION RATING TABLE PACKAGE POWER RATING AT TA TC TP T 25C POWER RATING 828 mW 4032 mW 2475 mW DERATING FACTOR ABOVE T = 25C 6.62 mW/C 32.2 mW/C 19.8 mW/C T = 70C POWER RATING 530 mW 2583 mW 1584 mW T = 85C POWER RATING 431 mW 2100 mW 1287 mW T = 125C POWER RATING 166 mW 812 mW 495 mW PW RJP is the thermal resistance between the junction and the device pin. To determine the virtual junction temperature (TJ) relative to the device pin temperature, the following calculations should be used: TJ = PD x RJP + TP, where PD is the internal power dissipation of the device and TP is the device pin temperature at the point of contact to the printed wiring board. The RJP for the TL75LPxx series is 50.5C/W. MAXIMUM CONTINUOUS DISSIPATION vs FREE-AIR TEMPERATURE 2400 2200 Maximum Continuous Dissipation - mW 2000 1800 1600 1400 1200 1000 800 600 400 200 0 25 50 75 100 125 150 TA - Free-Air Temperature - C RJA = 151C/W Maximum Continuous Dissipation - mW 4800 4400 4000 3600 3200 2800 2400 2000 1600 1200 800 400 0 25 MAXIMUM CONTINUOUS DISSIPATION vs CASE TEMPERATURE RJC = 31C/W 50 75 100 125 150 TC - Case Temperature - C Figure 1 Figure 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-3 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 recommended operating conditions MIN TL75LP48 TL75LP05 Input voltage, VI TL75LP08 TL75LP10 TL75LP12 High-level input voltage, ENABLE, VIH Low-level input voltage, ENABLE, VIL Output current range, IO Operating virtual junction temperature range, TJ 5.15 5.3 8.4 10.4 12.5 2.0 0 5 - 40 MAX 23.0 23.0 23.0 23.0 23.0 15.0 0.8 300 125 V V mA C V UNIT electrical characteristics over operating virtual junction temperature range, VI = 10 V, IO = 300 mA, ENABLE = 0 V (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage TEST CONDITIONS VI = 5.35 V to 10 V VI = 5.35 V to 10 V, TL75LP48Q MIN 4.75 TJ = 25C 50 TYP 4.85 10 55 12 0.12 0.17 0.22 TJ = 25C 500 2.5 4 6 9 7 0.05 4 10 20 30 25 6 A A mA 30 0.2 0.3 0.4 V V MAX 4.95 25 UNIT V mV dB mV TJ = 25C VI = 5.6 V to 15.6 V, f = 120 Hz, IO = 5 mA to 300 mA, TJ = 25C IO = 100 mA IO = 200 mA IO = 300 mA f = 10 Hz to 100 kHz, IO = 10 mA IO = 100 mA IO = 200 mA IO = 300 mA ENABLE = 0.8 V ENABLE = 2 V Bias current High-level input current, ENABLE Low-level input current, ENABLE Standby current ENABLE = 2 V 100 150 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. 3-4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 electrical characteristics over operating virtual junction temperature range, VI = 10 V, IO = 300 mA, ENABLE = 0 V (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage TEST CONDITIONS VI = 5.5 V to 10 V VI = 5.5 V to 10 V, TL75LP05Q MIN 4.9 TJ = 25C TJ = 25C 50 TYP 5 10 55 12 0.12 0.17 0.22 TJ = 25C 500 2.5 4 6 9 7 0.05 4 10 20 30 25 6 A A mA 30 0.2 0.3 0.4 V V MAX 5.1 25 UNIT V mV dB mV VI = 6 V to 16 V, f = 120 Hz, IO = 5 mA to 300 mA, TJ = 25C IO = 100 mA IO = 200 mA IO = 300 mA f = 10 Hz to 100 kHz, IO = 10 mA IO = 100 mA IO = 200 mA IO = 300 mA ENABLE = 0.8 V ENABLE = 2 V Bias current High-level input current, ENABLE Low-level input current, ENABLE Standby current ENABLE = 2 V 100 150 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. electrical characteristics over operating virtual junction temperature range, VI = 10 V, IO = 300 mA, ENABLE = 0 V (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage TEST CONDITIONS VI = 8.6 V to 15 V VI = 8.6 V to 15 V, TL75LP08Q MIN 7.84 TJ = 25C TJ = 25C 50 TYP 8 12 55 12 0.12 0.17 0.22 TJ = 25C 500 2.5 4 6 9 7 0.05 4 10 20 30 25 6 A A mA 40 0.2 0.3 0.4 V V MAX 8.16 40 UNIT V mV dB mV VI = 9 V to 19 V, f = 120 Hz, IO = 5 mA to 300 mA, TJ = 25C IO = 100 mA IO = 200 mA IO = 300 mA f = 10 Hz to 100 kHz, IO = 10 mA IO = 100 mA IO = 200 mA IO = 300 mA ENABLE = 0.8 V ENABLE = 2 V Bias current High-level input current, ENABLE Low-level input current, ENABLE Standby current ENABLE = 2 V 100 150 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-5 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 electrical characteristics over operating virtual junction temperature range, VI = 14 V, IO = 300 mA, ENABLE = 0 V (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage TEST CONDITIONS VI = 10.6 V to 17 V VI = 10.6 V to 17 V, TL75LP10Q MIN 9.8 TJ = 25C f = 120 Hz, TJ = 25C 50 TYP 10 15 55 15 0.12 0.17 0.22 TJ = 25C 1000 2.5 4 6 9 7 0.05 4 10 20 30 25 6 A A mA 50 0.2 0.3 0.4 V V MAX 10.2 43 UNIT V mV dB mV VI = 11 V to 21 V, IO = 5 mA to 300 mA, TJ = 25C IO = 100 mA IO = 200 mA IO = 300 mA f = 10 Hz to 100 kHz, IO = 10 mA IO = 100 mA IO = 200 mA IO = 300 mA ENABLE = 0.8 V ENABLE = 2 V Bias current High-level input current, ENABLE Low-level input current, ENABLE Standby current ENABLE = 2 V 100 150 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. electrical characteristics over operating virtual junction temperature range, VI = 14 V, IO = 300 mA, ENABLE = 0 V (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage TEST CONDITIONS VI = 12.7 V to 18 V VI = 12.7 V to 18 V, TL75LP12Q MIN 11.76 TJ = 25C f = 120 Hz, TJ = 25C 50 TYP 12 15 55 15 0.12 0.17 0.22 TJ = 25C 1000 2.5 4 6 9 7 0.05 4 10 20 30 25 6 A A mA 60 0.2 0.3 0.4 V V MAX 12.24 43 UNIT V mV dB mV VI = 13 V to 23 V, IO = 5 mA to 300 mA, TJ = 25C IO = 100 mA IO = 200 mA IO = 300 mA f = 10 Hz to 100 kHz, IO = 10 mA IO = 100 mA IO = 200 mA IO = 300 mA ENABLE = 0.8 V ENABLE = 2 V Bias current High-level input current, ENABLE Low-level input current, ENABLE Standby current ENABLE = 2 V 100 150 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. 3-6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 electrical characteristics at VI = 10 V, IO = 300 mA, ENABLE = 0 V, TJ = 25C (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage Bias current High-level input current, ENABLE Low-level input current, ENABLE ENABLE = 0.8 V ENABLE = 2 V f = 10 Hz to 100 kHz f = 120 Hz TEST CONDITIONS TL75LP48Y MIN TYP 4.85 10 55 12 0.22 500 9 7 0.05 MAX UNIT V mV dB mV V V mA A A Standby current ENABLE = 2 V 100 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. electrical characteristics at VI = 10 V, IO = 300 mA, ENABLE = 0 V, TJ = 25C (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage Bias current High-level input current, ENABLE Low-level input current, ENABLE ENABLE = 0.8 V ENABLE = 2 V f = 10 Hz to 100 kHz f = 120 Hz TEST CONDITIONS TL75LP05Y MIN TYP 5 10 55 12 0.22 500 9 7 0.05 MAX UNIT V mV dB mV V V mA A A Standby current ENABLE = 2 V 100 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-7 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 electrical characteristics at VI = 10 V, IO = 300 mA, ENABLE = 0 V, TJ = 25C (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage Bias current High-level input current, ENABLE Low-level input current, ENABLE ENABLE = 0.8 V ENABLE = 2 V f = 10 Hz to 100 kHz f = 120 Hz TEST CONDITIONS TL75LP08Y MIN TYP 8 12 55 12 0.22 500 9 7 0.05 MAX UNIT V mV dB mV V V mA A A Standby current ENABLE = 2 V 100 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. electrical characteristics at VI = 14 V, IO = 300 mA, ENABLE = 0 V, TJ = 25C (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage Bias current High-level input current, ENABLE Low-level input current, ENABLE ENABLE = 0.8 V ENABLE = 2 V f = 10 Hz to 100 kHz f = 120 Hz TEST CONDITIONS TL75LP10Y MIN TYP 10 15 55 15 0.22 1000 9 7 0.05 MAX UNIT V mV dB mV V V mA A A Standby current ENABLE = 2 V 100 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. 3-8 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 electrical characteristics at VI = 14 V, IO = 300 mA, ENABLE = 0 V, TJ = 25C (unless otherwise noted) PARAMETER Output voltage Input voltage regulation Ripple rejection Output voltage regulation Dropout voltage Output noise voltage Bias current High-level input current, ENABLE Low-level input current, ENABLE ENABLE = 0.8 V ENABLE = 2 V f = 10 Hz to 100 kHz f = 120 Hz TEST CONDITIONS TL75LP12Y MIN 11.76 TYP 12 15 55 12 0.22 500 9 7 0.05 30 25 6 60 0.4 MAX 12.24 43 UNIT V mV dB mV V V mA A A Standby current ENABLE = 2 V 100 150 A Pulse-testing techniques maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-F capacitor across the input and a 10-F capacitor with equivalent series resistance within the guidelines shown in Figures 3 and 4 on the output. All measurements are taken with a tantalum electrolytic capacitor. Although not normally recommended, an aluminum electrolytic capacitor can be used. Attention must be given its ESR value, particularly at low temperatures. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-9 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 PARAMETER MEASUREMENT INFORMATION The TL75LPxx series are low-dropout voltage regulators. This means that the capacitance is important to the performance of the regulator because it is a vital part of the control loop. The capacitor value and the equivalent series resistance (ESR) both affect the control loop and must be defined for the load range and the temperature range. Figures 3 and 4 can establish the capacitance value and ESR range for optimum regulator performance. Figure 3 shows the recommended range of ESR, measured at 120 Hz, for a given load with a 10-F capacitor on the output. In addition, it shows a maximum ESR limit of 2 and a load-dependent minimum ESR limit. For applications with varying loads, the lightest load condition should be chosen since it is the worst case. Figure 4 shows the relationship of the reciprocal of ESR to the square root of the capacitance with a minimum capacitance limit of 10 F and a maximum ESR limit of 2 . Figure 4 establishes the amount that the minimum ESR limit of Figure 3 can be adjusted for different capacitor values. For example, when the minimum load needed is 200 mA, Figure 3 suggests an ESR range of 0.8 to 2 for 10 F. Figure 4 shows that changing the capacitor from 10 F to 400 F can change the ESR minimum by greater than 3/0.5 (or 6). Therefore, the new minimum ESR value is 0.8/6 (or 0.13 ). This now allows an ESR range of 0.13 to 2 . This expanded ESR range is achieved by using a larger capacitor at the output. For better stability in low-current applications, it is recommended that a small resistance be placed in series with the capacitor (see Table 1) so that the ESR better approximates those in Figures 3 and 4. Table 1. Compensations for Increased Stability at Low Currents MANUFACTURER AVX KEMET CAPACITANCE 15 F 33 F ESR TYP 0.9 0.6 PART NUMBER TAJB156M010S T491D336M010AS ADDITIONAL RESISTANCE 1 0.5 Applied Load Current Load Voltage IL VL VL = IL x ESR OUTPUT CAPACITOR OUTPUT CAPACITOR EQUIVALENT SERIES RESISTANCE vs LOAD CURRENT ESR - Equivalent Series Resistance at 120 Hz - 3 2.8 2.6 2.4 2.2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0.03 Max ESR Boundary CL 0.025 0.02 0.015 0.01 0.005 0 0 CL = 10 F CI = 0.1 F 0.04 0.035 This Region Not Recommended for Operation STABILITY vs EQUIVALENT SERIES RESISTANCE Not Recommended Potential Instability Recommended Min ESR 3-10 EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE EEEEEEEEEEEEEE Region of Best Stability Min ESR Boundary Potential Instability Region 0 0.1 0.2 0.3 0.4 0.5 IL - Load Current - A 2 10 F Figure 3 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCCCC CCCCCCCCCCC CCC C 1000 F Region of Best Stability 400 F 200 F 100 F 22 F 10 F 1 0.5 1.5 2 2.5 3 3.5 4 4.5 5 1/ESR Stability - Figure 4 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 TYPICAL CHARACTERISTICS Table of Graphs FIGURE Output voltage Input current Dropout voltage Quiescent current Short-circuit protection conditions output voltage Load transient response Line transient response IO = 10 mA IO = 100 mA vs Input voltage vs Input voltage vs Input voltage vs Output current vs Output current vs Output current 5 6 7 8 9 10 11 12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-11 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs INPUT VOLTAGE 14 12 V) VO - Output Voltage - V TL75LP10 10 TL75LP08 8 III - Input Current - mA I 160 140 120 100 80 60 40 2 0 0 2 4 6 8 10 VI - Input Voltage - V 12 14 20 0 0 2 TL75LP48 10 4 6 8 VI - Input Voltage - V 12 14 TL75LP05 TL75LP10 TL75LP08 IO = 10 mA TJ = 25C 200 TL75LP12 180 IO = 10 mA TJ = 25C INPUT CURRENT vs INPUT VOLTAGE 6 TL75LP05 TL75LP48 4 TL75LP12 Figure 5 INPUT CURRENT vs INPUT VOLTAGE 350 300 III - Input Current - mA I IO = 100 mA TJ = 25C 250 TJ = 25C 225 200 TL75LP08 200 TL75LP05 TL75LP10 Dropout Voltage - mV 250 175 150 125 100 75 50 0 2 4 6 8 10 12 14 0 50 100 Figure 6 DROPOUT VOLTAGE vs OUTPUT CURRENT 150 TL75LP12 100 50 0 VI - Input Voltage - V TL75LP48 150 200 250 300 IO - Output Current - mA Figure 7 Figure 8 3-12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL75LPxxQ SERIES TL75LPxxY SERIES LOW-DROPOUT VOLTAGE REGULATORS SLVS073A - SEPTEMBER 1992 - REVISED AUGUST 1995 TYPICAL CHARACTERISTICS TL75LP05 SHORT-CIRCUIT PROTECTION CONDITIONS OUTPUT VOLTAGE vs OUTPUT CURRENT 6 TJ = 25C VI = 14 V IQ IQ - Quiescent Current - mA 10 V) VO - Output Voltage - V 5 QUIESCENT CURRENT vs OUTPUT CURRENT 12 8 4 TJ = 25C 6 3 4 2 TJ = 125C TJ = 40C 2 1 0 0 20 80 40 60 100 120 IO - Output Current - mA 140 160 0 0.75 0.85 0.95 1.05 1.15 1.25 1.35 1.45 1.55 IO - Output Current - A Figure 9 LOAD TRANSIENT RESPONSE V) II I O - Input Current - mA VO - Output Voltage - mV VIN - Input Voltage - V VO - Output Voltage - mV V) VIN 1 V/DIV 20 mV/DIV 200 100 0 -100 -200 150 100 50 0 -50 0 50 100 150 200 250 300 350 t - Time - s VI(NOM) = VO + 1 V ESR = 2 CL = 10 F TA = 25C Figure 10 LINE TRANSIENT RESPONSE VI(NOM) = VO + 1 V ESR = 2 IL = 20 mA CL = 10 F TA = 25C 0 50 100 150 200 250 300 350 400 t - Time - s Figure 11 Figure 12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3-13 3-14 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 1998, Texas Instruments Incorporated |
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