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XB1117 Series
1A Low Dropout Positive Voltage Regulator
ETR0315_003
GENERAL DESCRIPTION
The XB1117 series are 1A low dropout positive voltage regulators. Output voltage of the XB1117P series is fixed to 1.8V, 2.5V, 3.3V, and 5.0V. The XB1117K series' output voltage is adjustable by the external resistors. Please refer to the absolute maximum ratings for the difference between the rated input voltage of the XB1117P50 (VOUT=5.0V) and XB1117P18, 25, 31, K12B. With the dropout voltage 1.2V (TYP.), output current can be generated up to 1A. The built-in overcurrent circuit and thermal protection circuit start to operate when either one of output put current reaches the current limit level or junction temperature reaches the temperature limit. The XB1117 series provide stable line and load regulation by using an input capacitor and an output capacitor (10F, tantalum). Package is available in SOT-223.
APPLICATIONS
Highly efficient linear regulators 5V ~ 3.3V DC / DC converter Battery charger Local power supply inside equipment Battery powered equipment
FEATURES
Adjustable or Fixed Voltages : 1.8V, 2.5V, 3.3V, 5.0V, ADJ Low Dropout Voltage Line Regulation (TYP.) Load Regulation (TYP.) Adjust Pin Current : 1.2V @ IOUT=1A : 0.04% (ADJ) : 0.1% (ADJ) : Less than 120A (ADJ)
Over-current protection circuit built-in Thermal protection circuit built-in Bi-polar transistors LDO Output Voltage Accuracy Output Current Package : 1% : Up to 1A : SOT-223
TYPICAL APPLICATION CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage vs. Ambient Temperature
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XB1117 Series
PIN CONFIGURATION
SOT-223 (TOP VIEW)
PIN ASSIGNMENT
PIN NUMBER 1 2 3 PIN NAME ADJ/GND VOUT VIN FUNCTIONS ADJ/Ground Output Input
The electrical potential of the package fin is the same as the VOUT pin.
PRODUCT CLASSIFICATION
Ordering Information
XB1117 DESIGNATOR DESCRIPTION Type of Regulators K 181 251 Output Voltage & Accuracy 331 501 12B Package Device Orientation F R L : Adjustable VOUT type : Fixed VOUT 1.80V (1%) : Fixed VOUT 2.50V (1%) : Fixed VOUT 3.30V (1%) : Fixed VOUT 5.00V (1%) : Adjustable VOUT 1.25V (1%) : SOT-223 : Embossed tape, standard feed : Embossed tape, reverse feed SYMBOL P DESCRIPTION : Fixed VOUT type
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XB1117
Series
BLOCK DIAGRAM
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XB1117 Series
ABSOLUTE MAXIMUM RATINGS
XB1117P501
PARAMETER Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (T=100) Operating Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature SYMBOL VIN JC JA PD Topr Tj Tstg Tlead RATINGS 10.0 15 /W 160 625 0 ~70 0 ~125 - 65 ~150 260 mW UNITS V
*Stress above the listed absolute maximum rating may cause permanent damage to the device. ** The rated values of the XB1117P18 / 25 / 30 (VOUT=1.8V, 2.5V and 3.0V) and XB1117K type are different from that of the XB1117P50 (VOUT=5.0V).
ELECTRICAL CHARACTERISTICS
XB1117P501
PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=7.0V IOUT=0A 7.0VVIN9.0V IOUT=0A VIN=7.0V 0AIOUT1.0A VOUT=1 0AIOUT1.0A 7.0VVIN10.0V VIN=7.0V 0AIOUT1.0A 7.0VVIN10.0V 0AIOUT1.0A VIN=7.0V IOUT=100mA CONDITIONS MIN. 4.950 4.900 1.0 *Over Temp. TYP. 5.000 5.000 1 5.0 10.1 1.2 1.3 1.5 6 50 0.5 MAX. 5.050 5.100 6 15.2 20.2 1.4 13 mV Ta=25 UNITS V
*Over Temp. *Over Temp.
*Over Temp. *Over Temp. *Over Temp. *Over Temp.
V A mA ppm/
*Over Temp. = Over Temperature070
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XB1117
Series
ABSOLUTE MAXIMUM RATINGS
XB1117P181, P251, P331, K12B
PARAMETER Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (T=100) Operating Temperature Range Operating Temperature Range Storage Temperature Range Lead Temperature SYMBOL VIN JC JA PD TOPR TJ TSTG TLEAD RATINGS 7.0 15 160 625 0 ~ 70 0 ~ 125 -65 ~ 150 260 mW UNITS V /W
*Stress above the listed absolute maximum rating may cause permanent damage to the device.
ELECTRICAL CHARACTERISTICS
XB1117P181 PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=5.0V IOUT=0A 4.75VVIN7.0V IOUT = 0A VIN=5.0V 0AIOUT1.0A VOUT=1 0AIOUT1.0A 4.75VVIN7.0V VIN=5.0V 0AIOUT1.0A 4.75VVIN7.0V 0AIOUT1.0A VIN=5.0V IOUT=100mA CONDITIONS *Over Temp. MIN. 1.782 1.0 TYP. 1.800 1.0 1.80 3.70 1.2 1.3 1.5 6 50 *Over Temp. 0.5 MAX. 1.818 5.5 18.2 22.0 1.4 13 TJ=25 UNITS V mV mV V A mA ppm/
*Over Temp. *Over Temp. *Over Temp. *Over Temp.
*Over Temp. = Over Temperature (070)
XB1117P251 PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=5.0V IOUT=0A 4.75VVIN7.0V IOUT=0A VIN=5.0V 0AIOUT1.0A VOUT=1 0AIOUT1.0A 4.75VVIN7.0V VIN=5.0V 0AIOUT1.0A 4.75VVIN7.0V 0AIOUT1.0A VIN=5.0V IOUT=100mA CONDITIONS STANDARD VALUE MIN. TYP. MAX. 2.475 2.500 2.525 2.450 2.500 2.550 1.0 *Over Temp. 1.0 2.5 5.1 1.2 1.3 1.5 6 50 0.5 6.8 25.3 30.3 1.4 13 -
TJ =25 UNITS V mV mV V A mA ppm/
*Over Temp.
*Over Temp. *Over Temp. *Over Temp. *Over Temp.
*Over Temp. = Over Temperature (070)
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XB1117 Series
ELECTRICAL CHARACTERISTICS (Continued)
XB1117P331 PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=5.0V IOUT=0A 4.75VVIN7.0V IOUT=0A VIN=5.0V 0AIOUT1.0V VOUT=1 0AIOUT1.0A 4.75VVIN7.0V VIN=5.0V 0AIOUT1.0A 4.75VVIN7.0V 0AIOUT1.0A VIN=5.0V IOUT=100mA *Over Temp. *Over Temp. *Over Temp. *Over Temp. CONDITIONS MIN. 3.267 3.234 1.0 *Over Temp. TYP. 3.300 3.300 1.0 3.4 6.7 1.2 1.3 1.5 6 50 0.5 MAX. 3.333 3.366 4.5 10.0 13.4 1.4 13 mV
TJ =25
UNITS V
*Over Temp.
V A mA ppm/
*Over Temp. = Over Temperature (070)
XB1117K12B PARAMETER Reference voltage Line Regulation Load Regulation Dropout Voltage Current Limit Temperature Coefficient Adjust Pin Current Adjust Pin Current Change Temperature Stability Minimum Load Current SYMBOL Vref VOUT1 VOUT2 Vdif Ilim TC IADJ IADJ TS IOUT VIN=5.0V IOUT=10mA 4.75VVIN7.0V IOUT=0A VIN=5.0V 10mAIOUT1.0A VOUT=1 10mAIOUT1.0A 2.75AVIN7.0V 2.75VVIN7.0V 10mAIOUT1.0A 2.75VVIN7.0V 10mAIOUT1.0A 2.75VVIN7.0V 10mAIOUT1.0A VIN=5.0V IOUT=100mA VOUT=5.0V CONDITIONS MIN. 1.238 1.225 1.0 *Over Temp. *Over Temp. *Over Temp. TYP. 1.250 1.250 0.04 0.1 0.2 1.2 1.3 1.5 50 55 0.2 0.5 MAX. 1.262 1.275 0.20 0.3 0.4 1.4 120 5.0 10
TJ=25
UNITS V V A ppm/ A A mA
*Over Temp.
*Over Temp. *Over Temp. *Over Temp.
*Over Temp. = Over Temperature (070)
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XB1117
Series
OPERATIONAL EXPLANATION
1. Output voltage adjustment The XB1117 series provide a stable output by comparing the output voltage to an internal reference voltage. With the adjustable XB1117K type, a 1.25V reference voltage (VREF) is fixed between the VOUT pin and the ADJ pin and the external resistors R1 and R2 are used to set the output voltage. The resistance values of R1 and R2 should be set so as to provide a minimum load current of 10mA. The output voltage is given by the following equation. VOUT=VREF(1+R2/R1)+IADJ x R2 The output voltage of the XB1117P type is internally fixed to 1.8V, 2.5V, 3.3V, and 5.0V so external resistors are not necessary.
2. Stability and load regulation The XB1117 series requires a load capacitor between the VOUT pin and the GND pin to provide phase compensation thereby ensuring stability of the output voltage. Either a tantalum capacitor of more than 10F (TYP.) or an aluminum electrolytic capacitor of more than 50F (TYP.) should be connected. (Note : The capacitor's ESR value should not exceed 0.5.) The output capacitor does not have a theoretical upper limit so increasing its value will increase stability. CL=100F or more is typical for high current regulator design. In order to avoid any reductions in output voltage accuracy with the XB1117K type, we recommend not to place a parasitic resistor (Rp) between the VOUT pin and the divider resistor R1. The parasitic resistor (Rp) does not influence the output however if the divider resistor R1 is directly connected to the VOUT pin. With the XB1117P type, although external resistor (R1) is internally connected to the VOUT pin, stability can be maintained by not wiring a parasitic resistor to the GND pin.
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XB1117 Series
OPERATIONAL EXPLANATION (Continued)
3. Thermal protection XB1117 series has thermal protection which limits junction temperature to 150. However, device functionally is only guaranteed to a maximum junction temperature of + 125. The power dissipation and junction temperature for the XB1117 series are given by; PD=(VIN-VOUT) x IOUT TJ=TA+(PDxJA) NOTETJ must not exceed 125. 4. Current limit protection XB1117 series is protected against overload conditions. Current protection is triggered at 1.5A (TYP.). 5. Thermal consideration The XB1117 series contain thermal limiting circuitry designed to protect itself from over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As mentioned in thermal protection section, we need to consider all sources of thermal resistance between junction and ambient. It includes junction-to-case, case-to-heat-sink interface and heat sink thermal resistance itself. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Proper mounting is required to ensure the best possible thermal flow from this area of the package to the heat sink. The case of all devices in this product series is electrically connected to the output. Therefore, if the case of the device is not electrically isolated, a thermally conductive spacer is recommended.
APPLICATION CIRCUITS
Adjustable Output Voltage
8/13
XB1117
Series
APPLICATION CIRCUITS (Continued)
Regulator with reference voltage
Regulator with reverse diode protection
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XB1117 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Load Regulation vs. Ambient Temperature (2) Reference Voltage vs. Ambient Temperature
(3) Output Short Circuit Current vs. Dropout Voltage
(4) Dropout Voltage vs. Output Current
(5) Adjust Pin Current vs. Ambient Temperature
(6) Supply Current vs. Dropout Voltage
(7) Load Transient Response
(8) Line Transient Response
10/13
XB1117
Series
PACKAGING INFORMATION
SOT-223
MARKING RULE
SOT-223
Represents product series MARK B Represents fixed or adjustable output voltage MARK K P Represents output voltage SOT-223 (TOP VIEW) MARK B K T 2 M OUTPUT VOLTAGE (V) ADJ 1.8 2.5 3.3 5.0 PRODUCT SERIES XB1117K12BFx XB1117P181Fx XB1117P251Fx XB1117P331Fx XB1117P501Fx PRODUCT SERIES XB1117KxxxFx XB1117PxxxFx PRODUCT SERIES XB1117xxxxFx
Represents production lot number 0 to 9, A to Z repeated. (G, I, J, O, Q, W are excepted.)
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XB1117 Series
1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd.
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XB1117
Series
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