300 mA CMOS High Performance LDO Linear Regulator with Power OK

Manufacturer's part number :


Manufacturer Skyworks


Description :

The AAT3237 MicroPower™ low dropout (LDO) linear regulator is ideally suited for portable applications where low noise, extended battery life, and small size are critical. The AAT3237 has been specifically designed for low output noise performance, fast transient response, and high power supply rejection ratio (PSRR). Other features include low quiescent current, typically 70μA, and low dropout voltage, typically less than 400mV at full output current. The device is output short-circuit protected and has a thermal shutdown circuit for additional protection under extreme conditions. The AAT3237 also features a low-power shutdown mode for extended battery life. A Power-OK opendrain output signals when VOUT is in regulation. The AAT3237 is available in a Pb-free, space-saving 6-pin SOT23 or 8-pin SC70JW package in 13 factory-programmed voltages: 1.2V, 1.5V, 1.8V, 2.0V, 2.3V, 2.5V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V, 3.3V, or 3.5V.

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    • Low Dropout: 400mV at 300mA
    • Guaranteed 300mA Output
    • High Accuracy ±1.5%
    • 70µA Quiescent Current
    • High Power Supply Ripple Rejection
    • Power-OK (POK) Output
    • Fast Line and Load Transient Response
    • Short-Circuit Protection
    • Over-Temperature Protection
    • Uses Low Equivalent Series Resistance (ESR) Ceramic Capacitors
    • Shutdown Mode for Longer Battery Life
    • Low Temperature Coefficient
    • 13 Factory-Programmed Output Voltages
    • SOT23 6-Pin or SC70JW 8-Pin Package

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Max Input Voltage (V) 5.5  

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Output Voltage (V) 3.3  
Typ. Active Current (µA) 70 (Quiescent)  
Typ. Dropout Voltage @ Max. lout (mV) 400  
Typ. Output Voltage Accuracy (%) ± 1.5  
Output Current (mA) 300  
Operating Temperature (°C) -40 to +85  
Package SOT-23-6