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PS5005 - Step-up DC/DC Converter

Description

The PS5005 is a compact, high efficiency, and low voltage step-up DC/DC converter with an Adaptive Current Mode PWM control loop.

It comprises of an error amplifier, a ramp generator, a PWM comparator, a switch pass element and the driver.

Features

  • Low Quiescent (Switch-off) Supply Current: 14µA Low Start-up Input Voltage: typical 0.8V High Supply Capability: Deliver 3.3V 100mA with 1Alkaline Cell; 5V 300mA with 1 Li-Cell Zero Shutdown Mode Supply Current High efficiency: 90% Fixed switching frequency: 500KHz Options for internal or external power switches Package type: SOT-26, SOT-89-5.

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Datasheet Details

Part number PS5005
Manufacturer CHIPLINK
File Size 285.00 KB
Description Step-up DC/DC Converter
Datasheet download datasheet PS5005 Datasheet

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Full PDF Text Transcription

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PS5005 High Efficiency, Low Voltage Step-up DC/DC Converter GENERAL DESCRIPTION The PS5005 is a compact, high efficiency, and low voltage step-up DC/DC converter with an Adaptive Current Mode PWM control loop. It comprises of an error amplifier, a ramp generator, a PWM comparator, a switch pass element and the driver. It provides stable and high efficient operation over a wide range of load currents without external compensation. The below 1V start-up input voltage makes PS5005 suitable for single battery cell applications. The built-in power transistor is able to provide up to 300mA output current while working under Li-Battery Supply. Besides, it provides extra pin to drive external power devices (NMOS or NPN ) in case higher output current is needed.
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