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CAT6221 300 mA CMOS Dual LDO Regulator
Description
The 300 mA CMOS Dual LDO CAT6221 combines in a single TSOT-23 6-lead package two low dropout regulators (LDO), each with its own enable pin. The regulator outputs drive loads up to 300 mA. By design, the dual LDO provides fast response time during load current and line voltage changes. Each LDO is optimized for low noise and high crosstalk isolation. With zero shut down current and a low quiescent current of 100 mA, the dual LDO is ideal for battery-operated devices with supply voltage from 2.3 V to 5.5 V. The dual LDO offers 1% initial accuracy and very low dropout voltage, typical 210 mV at 300 mA. Stable operation is provided with small 1 mF ceramic output capacitors, reducing required board space and component cost. Other features include fold-back current limit and thermal protection. The dual LDO is available in the tiny 6-lead TSOT-23 package with a maximum height of 0.8 mm.
Features
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6 1 TSOT-23 TD SUFFIX CASE 419AF
PIN CONNECTIONS
1 EN1 VIN EN2 (Top View) VOUT1 GND VOUT2
* * * * * * * * * * * * *
Two Outputs with Guaranteed 300 mA Peak Output Current Low Dropout Voltages of 210 mV Typical at 300 mA Stable with Ceramic Output Capacitors Independent Enable Pins Under Voltage Lockout No-load Ground Current of 100 mA Typical Full-load Ground Current of 160 mA Typical 1.0% Output Voltage Initial Accuracy (VOUT 2.0 V) 2.0% Accuracy Over Temperature (VOUT 2.0 V) "Zero" Current Shutdown Mode Fold-back Current Limit and Thermal Protection TSOT-23 6-lead, 0.8 mm Height Package These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant
MARKING DIAGRAM
T3YM
T3 = CAT6221 Device Code Y = Production Year (last digit) M = Production Month: 1 - 9, A, B, C
PIN FUNCTION
Pin # 1 2 3 4 5 6 Name EN1 VIN EN2 VOUT2 GND VOUT1 Function Enable input (active high) for VOUT1. Supply voltage input. Enable input (active high) for VOUT2. LDO Output Voltage 2. Ground reference. LDO Output Voltage 1.
Applications
* Cellular Phones * Battery-powered Devices * Consumer Electronics
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2009
December, 2009 - Rev. 1
1
Publication Order Number: CAT6221/D
CAT6221
VIN VIN EN1 LDO1 EN1 Reference VIN 2.3 V to 5.5 V VIN CIN 1 mF OFF ON OFF ON CAT6221 EN1 VOUT2 EN2 GND VOUT1 COUT1 1 mF VOUT2 COUT2 1 mF VOUT1 VOUT2 EN2 LDO2 EN2 Shutdown Switch GND VOUT2 Shutdown Switch
VOUT1 VOUT1
Figure 1. Typical Application Circuit
Figure 2. CAT6221 Functional Block Diagram
Pin Function VIN is the supply pin for the LDO. A small 1 mF ceramic bypass capacitor is required between the VIN pin and ground near the device. When using longer connections to the power supply, CIN value can be increased without limit. The operating input voltage range is from 2.3 V to 5.5 V. EN1 & 2 are the enable control logic (active high) for the regulator outputs. VOUT1 & 2 are the LDO regulator outputs. A small 1 mF ceramic bypass capacitor is required between the VOUT
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter VIN VEN, VOUT Junction Temperature, TJ Power Dissipation, PD Storage Temperature Range, TS Lead Temperature (soldering, 5 sec.) ESD Rating (Human Body Model)
pins and ground. For better transient response, its value can be increased to 4.7 mF. The capacitor should be located near the device. For the TSOT23 6-lead package, a continuous 300 mA output current for both LDOs may turn-on the thermal protection. On each output, a 250 W internal shutdown switch discharges the output capacitor in the no-load condition. GND is the ground reference for the LDO. The pin must be connected to the ground plane on the PCB.
Rating 0 to 6.5 -0.3 to VIN + 0.3 +150 Internally Limited (Note 1) -65 to +150 260 3
Unit V V _C mW _C _C kV
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS (Note 2)
Parameter VIN VEN Junction Temperature Range, TJ Package Thermal Resistance (TSOT23), JA Range 2.3 to 5.5 0 to VIN -40 to +125 235 Unit V V _C _C/W
NOTE: Typical application circuit with external components is shown above. 1. The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax - TA)/qJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 2. The device is not guaranteed to work outside its operating rating.
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CAT6221
Table 3. ELECTRICAL OPERATING CHARACTERISTICS (Note 3) (VIN = VOUT + 1.0 V, VEN = High, IOUT = 100 mA, CIN = COUT = 1 mF, ambient temperature of 25C (over recommended operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.)
Symbol VOUT-ACC TCOUT VR-LINE VR-LOAD VDROP IGND Parameter Output Voltage Accuracy Conditions Initial accuracy (Note 4) Min -1.0 -2.0 Output Voltage Temp. Coefficient Line Regulation VIN = VOUT + 1.0 V to 5.5 V IOUT = 100 mA to 300 mA IOUT = 300 mA Both LDOs Enabled IOUT = 0 mA Both LDOs Enabled IOUT = 300 mA One LDO Enabled IOUT = 0 mA One LDO Enabled IOUT = 300 mA IGND-SD PSRR Shutdown Ground Current VEN < 0.4 V f = 1 kHz f = 20 kHz ISC TON eN ROUT-SH VIN-UVLO ESR Output short circuit current limit Turn-On Time Output Noise Voltage (Note 6) Shutdown Switch Resistance Under voltage lockout threshold COUT equivalent series resistance Logic High Level Logic Low Level Enable Input Current VIN = 2.3 to 5.5 V VIN = 2.3 to 5.5 V VEN = 0.4 V VEN = VIN THERMAL PROTECTION TSD THYS Thermal Shutdown Thermal Hysteresis 160 10 C C 0.05 0.1 5 BW = 10 Hz to 100 kHz VOUT = 0 V 60 45 130 150 95 250 2.15 500 mA ms mVrms W V mW -0.2 -0.4 Load Regulation 0.9 40 0.1 +0.2 +0.4 1.5 2 Dropout Voltage (Note 5) 210 280 350 Ground Current 100 140 170 160 55 75 90 85 2 4 Power Supply Rejection Ratio dB mA mA mV % Typ Max +1.0 +2.0 ppm/C %/V Unit %
ENABLE INPUT (EN1, EN2) VHI VLO IEN 1.8 0.4 1 1 V V mA
3. Specification for 2.8 V output version unless specified otherwise. 4. For VOUT < 2.0 V, the initial accuracy is 2% and across temp is 3%. 5. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1 V differential. During test, the input voltage stays always above the minimum 2.3 V. 6. Specification for 1.8 V output version.
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CAT6221
TYPICAL CHARACTERISTICS (shown for 2.8 V/1.8 V outputs option) (VIN = 3.8 V, IOUT = 100 mA, EN1 = EN2 = VIN, CIN = COUT = 1 mF, TA = 25C unless otherwise specified.)
Figure 3. Output Voltage 1 vs. Temperature
Figure 4. Output Voltage 2 vs. Temperature
Figure 5. Load Regulation VOUT1
Figure 6. Load Regulation VOUT2
Figure 7. Ground Current (EN2 = GND)
Figure 8. Ground Current (EN1 = GND)
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CAT6221
TYPICAL CHARACTERISTICS (shown for 2.8 V/1.8 V outputs option) (VIN = 3.8 V, IOUT = 100 mA, EN1 = EN2 = VIN, CIN = COUT = 1 mF, TA = 25C unless otherwise specified.)
Figure 9. Ground Current (EN2 = GND)
Figure 10. Ground Current (EN1 = GND)
Figure 11. Output 1 Dropout Characteristics
Figure 12. Ground Current vs. Input Voltage
Figure 13. Output Voltage 1 vs. Load Current 1
Figure 14. Output Voltage 2 vs. Load Current 2
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CAT6221
TYPICAL CHARACTERISTICS (shown for 2.8 V/1.8 V outputs option) (VIN = 3.8 V, IOUT = 100 mA, EN1 = EN2 = VIN, CIN = COUT = 1 mF, TA = 25C unless otherwise specified.)
Figure 15. Line Regulation VOUT1
Figure 16. Line Regulation VOUT2
Figure 17. PSRR 1 & 2 vs. Frequency (30 mA Load)
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CAT6221
TRANSIENT CHARACTERISTICS (shown for 2.8 V/1.8 V outputs option) (VIN = 3.8 V, IOUT = 100 mA, EN1 = EN2 = VIN, CIN = COUT = 1 mF, TA = 25C unless otherwise specified.)
Figure 18. Enable Turn-on (100 mA Loads)
Figure 19. Enable Turn-off (100 mA Loads)
Figure 20. Enable Turn-on (300 mA/100 mA Loads)
Figure 21. Enable Turn-off (300 mA/100 mA Loads)
Figure 22. Enable Turn-on (100 mA/300 mA Loads)
NOTE:
Figure 23. Enable Turn-off (100 mA/300 mA Loads)
All transient characteristics are generated using the evaluation board CAT621XEVAL1.
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CAT6221
TRANSIENT CHARACTERISTICS (shown for 2.8 V/1.8 V outputs option) (VIN = 3.8 V, IOUT = 100 mA, EN1 = EN2 = VIN, CIN = COUT = 1 mF, TA = 25C unless otherwise specified.)
Figure 24. VOUT1 Load Transient Response (0.1 to 300 mA)
Figure 25. VOUT2 Load Transient Response (0.1 to 300 mA)
Figure 26. Line Transient Response (0.1 mA Loads)
Figure 27. Line Transient Response (0.1/100 mA Loads)
Figure 28. Line Transient Response (100/0.1 mA Loads)
NOTE:
Figure 29. Separate Enable Operation (100 mA Loads)
All transient characteristics are generated using the evaluation board CAT621XEVAL1.
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CAT6221
PACKAGE DIMENSIONS
TSOT-23, 6 LEAD CASE 419AF-01 ISSUE O SYMBOL
A A1 A2 b c D E1 E E E1 e L L1 L2 0.30 0.01 0.80 0.30 0.12 0.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 TYP 0.40 0.60 REF 0.25 BSC 0.50 0.05 0.87
D e
MIN
NOM
MAX
1.00 0.10 0.90 0.45 0.20
TOP VIEW
0
8
A2 A
q
b
A1 L1
L
c
L2
SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-193.
END VIEW
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CAT6221
Example of Ordering Information (Note 9)
Prefix CAT Device # 6221 Suffix -MG TD -G T3
Company ID (Optional)
Product Number 6221
VOUT Voltage (Note 10) See table below for Voltage Combinations
Package TD: TSOT-23
Lead Finish G: NiPdAu
Tape & Reel (Note 11) T: Tape & Reel 3: 3,000 / Reel
ORDERING INFORMATION
Orderable Part Number CAT6221-JFTD-GT3 CAT6221-JGTD-GT3 CAT6221-JLTD-GT3 CAT6221-JPTD-GT3 CAT6221-MFTD-GT3 CAT6221-MGTD-GT3 CAT6221-MLTD-GT3 CAT6221-MPTD-GT3 CAT6221-PFTD-GT3 CAT6221-PGTD-GT3 CAT6221-PLTD-GT3 CAT6221-PPTD-GT3 CAT6221-SFTD-GT3 CAT6221-SGTD-GT3 CAT6221-SLTD-GT3 CAT6221-SPTD-GT3 VOUT Voltage 2.5 V / 1.5 V 2.5 V / 1.8 V 2.5 V / 2.7 V 2.5 V / 3.0 V 2.8 V / 1.5 V 2.8 V / 1.8 V 2.8 V / 2.7 V 2.8 V / 3.0 V 3.0 V / 1.5 V 3.0 V / 1.8 V 3.0 V / 2.7 V 3.0 V / 3.0 V 3.3 V / 1.5 V 3.3 V / 1.8 V 3.3 V / 2.7 V 3.3 V / 3.0 V Package TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 Shipping 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel 3,000 / Tape & Reel
7. All packages are RoHS-compliant (Lead-free, Halogen-free). 8. The standard finish is NiPdAu pre-plated (PPF) lead frames. 9. The device used in the above example is a CAT6221-MGTD-GT3 (VOUT1 = 2.8 V, VOUT2 = 1.8 V, in a TSOT-23 package, NiPdAu, Tape & Reel). 10. For other voltage options, please contact your nearest ON Semiconductor Sales office. 11. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
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CAT6221/D

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