Anpac Semiconductor Ltd.

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AP2760 0.85V Startup, 1MHz, 300 mA Synchronous Boost Step-up DC-DC Converter

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AP2760  0.85V STARTUP, 1MHZ, 300mA SYNCHRONOUS
BOOST STEP-UP DC-DC CONVERTER
General Description
The A2760 is a step-up converter that provides a boosted output voltage from a low
voltage source. Because of its proprietary design,  it starts up at a very low input
voltage down to 0.85V, making it an ideal choice for single cell Alkaline/ NiMH battery
operations.
A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny,
low profile inductors and ceramic capacitors. The internally compensated current
mode PWM design and built-in synchronous rectifier  help to reduce external parts
count.
Key Specification
• Output current        300mA (typ)
• Efficiency        95% (typ)
• Output voltage accuracy      ±3% (max)
• Startup Voltage       0.85V (typ)
• Quiescent Current       25uA (typ)
• Shutdown Current       0.1uA (typ)
Features
• High Efficiency up to 95%
• 1MHz Switching Frequency Allows Small Inductor and Output Cap
• Input Boost-Strapping Allows Small or No Input Cap
• Low VIN Start-up Voltage down to 850mV Ideal for Single Alkaline Cell operations
• Low Noise PWM Control
• Internally Compensated Current Mode Control
• Internal Synchronous Rectifier
• Logic Control Shutdown (0.1uA shutdown current)
• Space-saving Package (SOT-25)
Applications
• One to Three Cell Battery Operated Devices
• Medical Instruments
• Bluetooth Headsets
• Flash-Based MP3 Players
• Noise Canceling Headphones

AP2760  0.85V STARTUP, 1MHZ, 300mA SYNCHRONOUS

BOOST STEP-UP DC-DC CONVERTER

General Description:

The A2760 is a step-up converter that provides a boosted output voltage from a low

voltage source. Because of its proprietary design,  it starts up at a very low input

voltage down to 0.85V, making it an ideal choice for single cell Alkaline/ NiMH battery

operations.

A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny,

low profile inductors and ceramic capacitors. The internally compensated current

mode PWM design and built-in synchronous rectifier  help to reduce external parts

count.

Key Specification

• Output current        300mA (typ)

• Efficiency        95% (typ)

• Output voltage accuracy      ±3% (max)

• Startup Voltage       0.85V (typ)

• Quiescent Current       25uA (typ)

• Shutdown Current       0.1uA (typ)

Features:

• High Efficiency up to 95%

• 1MHz Switching Frequency Allows Small Inductor and Output Cap

• Input Boost-Strapping Allows Small or No Input Cap

• Low VIN Start-up Voltage down to 850mV Ideal for Single Alkaline Cell operations

• Low Noise PWM Control

• Internally Compensated Current Mode Control

• Internal Synchronous Rectifier

• Logic Control Shutdown (0.1uA shutdown current)

• Space-saving Package (SOT-25)

Applications:

• One to Three Cell Battery Operated Devices

• Medical Instruments

• Bluetooth Headsets

• Flash-Based MP3 Players

• Noise Canceling Headphones

 

Last Updated on Monday, 01 October 2012 04:39