2A CMOS LDO Regulator. Features
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- Hilda Summers
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1 General Description The series are positive voltage regulator ICs fabricated by CMOS process. The ICs consist of a voltage reference, an error amplifier, a power transistor, a resistor network for setting output voltage, a current limit circuit for current protection, and a chip enable circuit. The have features of large current, low dropout voltage, high output voltage accuracy, and low input voltage. The provide a power good (PG) signal to indicate if the voltage level of V OUT reaches 92% of its rating value. And it operates with a V IN as low as 1.4V and V PP voltage 5V with output voltage programmable as low as 0.6V. The are available in 1.2V, 1.5V, 1.8V, 2.5V fixed output voltage versions and adjustable output voltage version. The fixed versions integrate the adjust resistors. It is also available in an adjustable version, which can set the output voltage with external resistor. If the pin of adjustable output voltage is to ground, it will switch to fixed output voltage. Features Adjustable Output: 0.6V to 3.0V Low Dropout Voltage: 300mV@I OUT =2A, V OUT =1.2V Over Current and Over Temperature Protection Enable Pin PSOP-8 Package with Thermal Pad Maximum Output Current: 2A High Output Voltage Accuracy: 2% V OUT Power Good Signal Excellent Line/Load Regulation Applications Notebook The series are available in PSOP-8 package. PSOP-8 Figure 1. Package Type of 1
2 Pin Configuration MP Package (PSOP-8) PG 1 8 GND EN 2 7 ADJ VIN 3 6 VOUT VCTRL 4 5 NC Figure 2. Pin Configuration of (Top View) Pin Description Pin Number Pin Name Function 1 PG Assert high once V OUT reaches 92% of its rating voltage 2 EN Enable input 3 VIN Input voltage 4 VCTRL Input voltage for controlling circuit 5 NC Not connected 6 VOUT Regulated output voltage 7 ADJ Adjust output: when connected to ground, the output voltage is set by internal resistors; when external feedback resistors are connected, the output voltage will be V OUT =0.6 (R1+R2)/R2 8 GND Ground 2
3 Functional Block Diagram Figure 3. Functional Block Diagram of 3
4 Ordering Information - Circuit Type Package MP: PSOP-8 G1: Green Blank: Tube TR: Tape & Reel 1.2: Fixed Output 1.2V 1.5: Fixed Output 1.5V 1.8: Fixed Output 1.8V 2.5: Fixed Output 2.5V Package Temperature Range Version Description Part Number Marking ID Packing Type MP-1.2G1 2132MP-1.2G1 Tube MP-1.2TRG1 2132MP-1.2G1 Tape & Reel PSOP-8-40 to 85ºC Each fixed output version integrates ADJ version MP-1.5G1 2132MP-1.5G1 Tube MP-1.5TRG1 2132MP-1.5G1 Tape & Reel MP-1.8G1 2132MP-1.8G1 Tube MP-1.8TRG1 2132MP-1.8G1 Tape & Reel MP-2.5G1 2132MP-2.5G1 Tube MP-2.5TRG1 2132MP-2.5G1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and Green. 4
5 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Input Voltage V IN 6.0 V Input Voltage for Controlling Circuit Enable Input Voltage V EN -0.3 to 6.0 V Output Current I OUT 2.5 A Thermal Resistance (No Heatsink) θ JA 130 ºC/W Operating Junction Temperature T J 150 ºC Storage Temperature Range T STG -65 to 150 ºC Lead Temperature (Soldering, 10sec) T LEAD 260 ºC ESD (Machine Model) 200 V ESD (Human Body Model) 2000 V Note 1: Stresses greater than 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 Ratings for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Input Voltage V IN V Input Voltage for Controlling Circuit Operating Ambient Temperature Range V T A C 5
6 Electrical Characteristics V IN =V OUT +0.5V,, T A =25 o C, C IN =C OUT =10µF, C CTRL =1µF, I OUT =10mA, Bold typeface applies -40 o C T A 85 o C unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit V Output Voltage V IN = V OUT +0.5V, V OUT V OUT OUT V I OUT =10mA 98% 102% Input Voltage V IN V Max. Output Current I OUT (max) V IN V OUT = 1V, V OUT =98% V OUT 2 A Load Regulation V RLOAD V IN =V OUT +0.5V, 10mA I OUT 2A 10 mv Line Regulation Dropout Voltage V RLINE V DROP V OUT + 0.5V V IN 5V, I OUT = 10mA 2 mv I OUT =500mA mv I OUT =1A mv I OUT =2A mv Supply Current I SUPPLY V IN =V OUT +0.5V, I OUT =0mA 300 µa VCTRL Current Power Supply Rejection Ratio Output. Voltage Temperature Coefficient I CTRLH V IN = V OUT +0.5V, µa I CTRLL PSRR V OUT V OUT T V IN =V OUT +0.5V, V EN =0V, µa Ripple 0.5Vp-p, f=100hz 60 db V IN =V OUT +1V f=1khz 60 db I OUT =10mA, -40 o C T A 85 o C ±100 Reference Voltage V REF Adjust Short to V OUT V Enable Voltage High Enable Input Voltage High 1.5 V Enable Low Voltage Enable Input Voltage Low 0.4 V ppm/ o C Thermal Shutdown OTSD 165 o C Thermal Shutdown Hysteresis V OUT Power Good Voltage V THPG 92 % V PG Hysteresis 7 % Adjust Pin Threshold 200 mv 20 o C Thermal Resistance (Junction to Case) θ JC PSOP-8 40 ºC/W 6
7 Typical Performance Characteristics V V IN =2.2V Supply Current (ma) =-40 o C T 0.22 C =25 o C =85 o C Supply Current (ma) V V IN =V OUT +1V No Load Output Current (A) Case Temperature ( o C) Figure 4. Supply Current vs. Output Current Figure 5. Supply Current vs. Case Temperature Enable High/Low Voltage (V) V V IN =2.2V Enable High Voltage Enable Low Voltage Supply Current (ma) V No Load =-40 o C =25 o C =85 o C Case Temperature ( o C) Input Voltage (V) Figure 6. Enable High/Low Voltage vs. Case Temperature Figure 7. Supply Current vs. Input Voltage 7
8 Typical Performance Characteristics (Continued) Output Voltage (V) V V IN =2.2V I OUT =10mA Output Voltage (V) V V IN =2.2V =-40 o C =25 o C =85 o C Case Temperature ( o C) Output Current (A) Figure 8. Output Voltage vs. Case Temperature Figure 9. Output Voltage vs. Output Current Output Voltage (V) V No Load 0.6 =-40 o C 0.5 T 0.4 C =25 o C 0.3 =85 o C Input Voltage (V) Dropout Voltage (mv) V 120 T 80 C =-40 o C =25 o C 40 =85 o C Output Current (A) Figure 10. Output Voltage vs. Input Voltage Figure 11. Dropout Voltage vs. Output Current 8
9 Typical Performance Characteristics (Continued) 400 Dropout Voltage (mv) V I OUT =30mA I OUT =500mA I OUT =1A I OUT =2A Short Current (ma) V V OUT =1.2V 280 V IN =2.2V V 240 CTRL Ouput Short to GND Case Temperature ( o C) Case Temperature ( o C) Figure 12. Dropout Voltage vs. Case Temperature Figure 13. Short Current vs. Case Temperature V V OUT =1.2V C IN =10µF, C OUT =10µF, C CTRL =1µF,,V IN =2.2V to 3.2V, I OUT =10mA PSRR (db) k 10k 100k Frequency (Hz) Figure 14. PSRR vs. Frequency Figure 15. V IN Start up Waveform (, V IN =0 to 2.2V, No Load) 9
10 Typical Performance Characteristics (Continued) V PG 1V/div V OUT 1V/div 1V/div I IN 1A/div Time 80 s/div Figure 16. V EN Start up Waveform Figure 17. Start up and Shut down Waveform (, V EN =0 to 5V, V IN =2.2V, No Load) ( =0 to 5V, V EN, V IN =2.2V, No Load) Figure 18. Load Transient Figure 19. Line Transient (, V IN =2.2V, I OUT =0 to 2A) (, C IN =C CTRL =1µF, C OUT =10µF, V IN =2.2V to 3.2V, I OUT =10mA) 10
11 Typical Application VCTRL PG 10k V IN V IN V OUT EN VIN VOUT GND R1 ADJ C CTRL 1 F C 1 10 F C 2 10 F R2 0.6 (R1+R2) V OUT = R2 Figure 20. Typical Application of for Adjustable Version Figure 21. Typical Application of for Fixed Version 11
12 Mechanical Dimensions PSOP-8 Unit: mm(inch) 3.202(0.126) 3.402(0.134) 12
13 IMPORTANT NOTICE reserves the right to make changes without further notice to any products or specifications herein. does not assume any responsibility for use of any its products for any particular purpose, nor does assume any liability arising out of the application or use of any its products or circuits. does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE BCD - Headquarters Semiconductor Manufacturing Limited - Wafer BCD FabSemiconductor Manufacturing Limited BCD - Wafer Semiconductor Fab Manufacturing Limited Shanghai - IC Design SIM-BCD Group Semiconductor Manufacturing Co., Ltd. No. Shanghai 1600, Zi SIM-BCD Xing Road, Semiconductor Shanghai ZiZhu Manufacturing Science-based Limited Industrial Park, , China 800 Yi Advanced Shan Road, Analog Shanghai Circuits , (Shanghai) China Corporation Tel: 800, , Yi Shan Road, Shanghai Fax: , China Tel: F, Zone B, 900, 1491, Yi Fax: Shan Road, Shanghai , China Tel: , Fax: Tel: , Fax: REGIONAL SALES OFFICE REGIONAL Shenzhen OfficeSALES OFFICE Shenzhen Shanghai SIM-BCD Office Semiconductor Manufacturing Co., Ltd., Shenzhen Office Shanghai Unit A Room SIM-BCD 1203, Skyworth Semiconductor Bldg., Gaoxin Manufacturing Ave.1.S., Nanshan Co., Ltd. District, Shenzhen Shenzhen, Office Advanced China Analog Circuits (Shanghai) Corporation Shenzhen Office Taiwan Office BCD Taiwan Semiconductor Office (Taiwan) Company Limited 4F, 298-1, BCD Rui Semiconductor Guang Road, (Taiwan) Nei-Hu District, Company Taipei, Limited Taiwan 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, USA Office USA BCD Office Semiconductor Corp. BCD Semiconductor Huntwood Ave. Corporation Hayward, CA 94544, Huntwood USA Ave. Hayward, Room Tel: E, 5F, Noble 7951 Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen , China Tel: Taiwan 2808 CA Tel : 94544, U.S.A Tel: Fax: Fax: Fax: Tel: Fax: Tel Fax: : Fax:
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