R5212D Datasheet - RICOH electronics devices division

R5212D Step-down DC/DC Converter

Pin No 1 2 3 4 5 6 Symbol LX GND VDOUT VOUT1 VOUT2 VIN Ground Pin Output Pin of Voltage Detector (N-channel open-drain out-put type) DC/DC converter Step-down Output monitoring Pin Output Pin of Voltage Regulator Voltage Supply Pin Pin Description Switching Pin (P-channel open-drain output type) ∗.

www.DataSheet4U.com R5212D SERIES Step-down DC/DC Converter with VR and Reset NO.EA-128-0510 OUTLINE The R5212D is CMOS-based PWM step-down DC/DC converter combined with a voltage regulator (VR) and a voltage detector (VD), with low supply current. Each of these ICs consists of an oscillator, a PWM control circuit, a voltage reference unit, an error amplifier, a soft-start circuit, a current limit circuit, a phase compensation circuit, a resistor net for voltage detect circuit, an output drive.

R5212D Features

* Range of Input Voltage 3.0V~5.5V Built-in Soft-start Function (Typ. 1ms) and built-in power-on reset delay (Typ. 12ms or 50ms) Maximum Output Current500mA (DC/DC), 200mA (VR) Accuracy Output Voltage ±2.0% (DC/DC and Voltage Regulator Outp

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