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CS5112 - 1.4A Switching Regulator

Datasheet Summary

Description

The CS5112 is a dual output power supply integrated circuit.

It contains a 5V ±2%, 100mA linear regulator, a watchdog timer, a linear output voltage monitor to provide a Power On Reset (POR) and a 1.4A current mode PWM switching regulator.

Features

  • s Linear Regulator 5V ± 2% @ 100mA s Switching Regulator 1.4A Peak Internal Switch 120kHz Maximum Switching Frequency 5V to 26V Operating Supply Range s Smart Functions Watchdog RESET ENABLE s Protection Overtemperature Current Limit Block Diagram VFB1 VFB2 SELECT COMP IBIAS COSC Oscillator Multiplexer + Switcher Error Amplifier COMP VIN Logic Base Drive + + Gnd VSW 1.4A Package Options 24 Lead SO Wide (Internally Fused Leads) VIN NC 1 Current Sense Amplifier ENABLE VREG VLIN IBIAS Gnd Gnd.

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Datasheet Details

Part number CS5112
Manufacturer Cherry Semiconductor Corporation
File Size 199.49 KB
Description 1.4A Switching Regulator
Datasheet download datasheet CS5112 Datasheet
Additional preview pages of the CS5112 datasheet.

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Full PDF Text Transcription

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CS5112 CS5112 1.4A Switching Regulator with 5V, 100mA Linear Regulator with Watchdog, RESET and ENABLE Description The CS5112 is a dual output power supply integrated circuit. It contains a 5V ±2%, 100mA linear regulator, a watchdog timer, a linear output voltage monitor to provide a Power On Reset (POR) and a 1.4A current mode PWM switching regulator. The 5V linear regulator is comprised of an error amplifier, reference, and supervisory functions. It has low internal supply current consumption and provides 1.2V (typical) dropout voltage at maximum load current. The watchdog timer circuitry monitors an input signal (WDI) from the microprocessor. It responds to the falling edge of this watchdog signal.
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