AAT3237B Advanced Analogic Technologies, Inc., AAT3237B Datasheet
AAT3237B
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AAT3237B Summary of contents
Page 1
... The AAT3237B MicroPower low dropout (LDO) lin- ear regulator is ideally suited for portable applica- tions where low noise, extended battery life, and small size are critical. The AAT3237B has been specifically designed for low output noise perform- ance, fast transient response, and high power sup- ply rejection ratio (PSRR) ...
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... It is low whenever the shutdown (EN is low). Connect a pull-up resistor from POK to OUT. 6 OUT Output pin; should be decoupled with 2.2µF ceramic capacitor. Pin Configuration 2 LDO Linear Regulator with Power-OK SOT23-6 (Top View) OUT GND GND 5 2 POK AAT3237B 300mA MicroPower™ 3237B.2006.01.1.3 ...
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... Only one Absolute Maximum Rating should be applied at any one time. 2. Mounted on a demo board calculate minimum input voltage, use the following equation: V 3237B.2006.01.1.3 LDO Linear Regulator with Power- IN(MIN) OUT(MAX) DO(MAX) AAT3237B 300mA MicroPower™ Value Units ...
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... EN V Rising 25°C OUT 1mA SINK V < 5.5V Regulation POK OUT 1kHz I = 10mA 10kHz OUT 1MHz is 98% of nominal. AAT3237B 300mA MicroPower™ ≤ 1.5V 1mA, C OUT OUT OUT = 25°C. A Min Typ Max = 25°C -1.5 1.5 = -40 to 85°C -2.5 2.5 300 400 600 600 70 125 ...
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... I 30.00 OUT 20.00 10.00 0.00 200 250 300 2 1.203 1.202 1.201 1.200 1.199 1.198 1.197 1.196 -40 -30 -20 -10 AAT3237B 300mA MicroPower™ Dropout Characteristics = 0mA OUT I = 300mA OUT I = 150mA OUT I = 100mA OUT I = 50mA OUT = 10mA OUT 2.80 2.90 3.00 3.10 3.20 Input Voltage (V) Ground Current vs. Input Voltage I = 300mA OUT ...
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... Load Transient Response 300mA 3.00 500 2.90 400 2.80 2.70 300 2.60 200 2.50 100 2.40 2.30 0 2.20 -100 2.10 1200 1000 800 600 400 200 0 -200 AAT3237B 300mA MicroPower™ 3.25 3.20 3.15 3.10 3.05 3.00 2.95 2.90 2.85 Time (100µs/div) 800 700 600 V OUT 500 400 300 200 I 100 OUT 0 -100 Time (10µs/div) Over-Current Protection Time (20ms/div) 3237B ...
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... Typical Characteristics Unless otherwise noted 5V AAT3237B Self Noise 10 1 0.1 0.01 0.01 0 Frequency (kHz) 3237B.2006.01.1.3 LDO Linear Regulator with Power-OK = 25°C. A 1.250 1.225 1.200 1.175 1.150 1.125 1.100 1.075 1.050 2.5 100 1000 AAT3237B 300mA MicroPower™ V and V vs. V EN(H) EN( EN(H) V EN(L) 3.0 3.5 4.0 4.5 5 ...
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... Functional Block Diagram IN EN POK Functional Description The AAT3237B is intended for LDO regulator appli- cations where output current load requirements range from no load to 300mA. The advanced circuit design of the AAT3237B pro- vides excellent transient response and fast turn-on ability. The LDO regulator output has been specif- ically optimized to function with low-cost, low-ESR ceramic capacitors ...
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... Applications Information To assure the maximum possible performance is obtained from the AAT3237B, please refer to the following application recommendations. Input Capacitor Typically, a 1µF or larger capacitor is recommend- ed for C in most applications not required for basic LDO regulator operation. However, if the AAT3237B is physically located ...
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... The AAT3237B features an integrated Power-OK comparator which can be used as an error flag. The POK open-drain output goes low when OUT is 6% below its nominal regulation voltage. Additionally, any time the AAT3237B is in shutdown, POK output is pulled low. Connect a pull-up resistor from POK to OUT. Enable Function The AAT3237B features an LDO regulator enable/ disable function ...
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... LDO Linear Regulator with Power-OK Package Marking 1 SOT23-6 IWXYY SOT23-6 HWXYY SOT23-6 IBXYY SOT23-6 IXXYY SOT23-6 2.85 ± 0.15 1.90 BSC 0.60 REF 0.40 ± 0.10 × 6 AAT3237B 300mA MicroPower™ Part Number (Tape and Reel) AAT3237BIGU-2.6-T1 AAT3237BIGU-2.8-T1 AAT3237BIGU-2.85-T1 AAT3237BIGU-2.9-T1 0.15 ± 0.07 GAUGE PLANE 0.45 ± 0.15 0.10 BSC 2 11 ...
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... AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed. Advanced Analogic Technologies, Inc. 830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 12 300mA MicroPower™ LDO Linear Regulator with Power-OK AAT3237B 3237B.2006.01.1.3 ...