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R1215D - PWM Step-up DC/DC Controller

General Description

Pin Description Pin No Symbol Description 1 EXT External FET Drive Pin (CMOS Output) 2 GND Ground Pin 3 DTC Pin for Setting Maximum Duty Cycle and Soft start time 4 DELAY Pin for External Capacitor (for Setting Output Delay of Protection) 5 VFB Feedback Pin for Monitoring Output Vo

Key Features

  • Input Voltage Range 1.8 V to 5.5 V.
  • Two Options of Basic Oscillator Frequency Typ. 700 kHz, 1.4 MHz.
  • Built-in Latch-type Protection Function (Output Delay Time can be set with an external capacitor).
  • Maximum Duty Cycle/Soft-start time Adjustable with external capacitors.
  • High Reference Voltage Accuracy ±1.5%.
  • UVLO Threshold level Typ. 1.6 V/ 1.79 V by mask option.
  • Small Temperature Coefficient of Reference Voltage Typ. ±150 pp.

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Datasheet Details

Part number R1215D
Manufacturer Nisshinbo
File Size 1.15 MB
Description PWM Step-up DC/DC Controller
Datasheet download datasheet R1215D Datasheet

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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R1215D Series PWM Step-up DC/DC Controller NO.EA-134-180705 OUTLINE The R1215D is a CMOS-based PWM step-up DC/DC controller with low supply current. The R1215D consists of an oscillator, a PWM comparator circuit, a reference voltage unit, an error amplifier, a reference current unit, a protection circuit, and an under voltage lockout (UVLO) circuit. A low ripple, high efficiency step-up DC/DC converter can be composed of this IC with some external components, or an inductor, a diode, a power MOSFET, resisters, and capacitors. The maximum duty cycle and the soft start time are easily adjustable with external resistors and capacitors.