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R1282D002A - 2CH PWM DC/DC CONTROLLER

General Description

Pin No 1 2 3 4 5 6 7 8 9 10 Symbol EXT1 GND AMPOUT1 DTC1 VFB1 VFB2 DTC2 Vrefout VIN EXT2 Ground Pin Amplifier Output Pin of Channel 1 Maximum Duty Cycle of Channel 1 Setting Pin Feedback pin of Channel 1 Feedback pin of Channel 2 Maximum Duty Cycle of Channel 2 Setting Pin Reference Output Pin Volta

Key Features

  • Input Voltage Range 2.5V to 5.5V Built-in Latch-type Protection Function by monitoring duty cycle (Fixed Delay Time Typ. 100ms) Oscillator Frequency 700kHz High Accuracy Voltage Reference ±1.5% U. V. L. O. ThresholdTyp. 2.2V (Hysteresis: Typ. 0.2V) Small Package thin SON-10 (package thickness Max. 0.9mm).

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Datasheet Details

Part number R1282D002A
Manufacturer RICOH
File Size 362.16 KB
Description 2CH PWM DC/DC CONTROLLER
Datasheet download datasheet R1282D002A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com 2CH PWM DC/DC CONTROLLER R1282D002A SERIES OUTLINE NO. EA-086-0502 The R1282D002A is a CMOS-based 2-channel PWM Step-up (as Channel 1)/Step-down (as Channel 2) DC/DC converter controller. The R1282D002A consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a reference current unit, a protection circuit, and an under voltage lockout (UVLO) circuit. A high efficiency Step-up/Step-down DC/DC converter can be composed of this IC with inductors, diodes, power MOSFETs, resisters, and capacitors. Each output voltage and maximum duty cycle can be adjustable with external resistors, while soft-start time can be adjustable with external capacitors and resistors.