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YB1685 Datasheet, PDF (1/9 Pages) YOBON TECHNOLOGIES,INC. – 2A 380KHz 32V PWM Buck DC/DC Converter | |||
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YB1685
2A 380KHz 32V PWM Buck DC/DC Converter
Description
The YB1685 is a 380 KHz fixed frequency
monolithic step down switch mode
regulator with a built in internal Power
MOSFET. It achieves 2A continuous output
current over a wide input supply range with
excellent load and line regulation. The
device includes a voltage reference,
oscillation circuit, error amplifier, internal
PMOS and etc.
The PWM control circuit is able to adjust
the duty ratio linearly from 0 to 100%. An
enable function, an over current protection
function and a short circuit protection
function are built inside. An internal
compensation block is built in to minimize
external component count.
The YB1685 serves as ideal power supply
units for portable devices.
Features
 2A Constant Output Current
 140m⦠RDSON Internal Power PMOSFET
Switch
 Up to 92% Efficiency Fixed 380KHz
Frequency
 Wide 3.6V to 32V Input Voltage Range
 Output Adjustable from 1.235V to 30V
 Output Current Protection
 Built in Frequency Compensation
 Built in Thermal Shutdown Function
 Built in Current Limit Function
 SOP8 Package is Available
 The Minimum Dropout up to 0.3V
 Pb-free Package
Applications
 Portable DVD
 LCD Monitor / TV
 Battery Charger
 ADSL Modem
 Telecom / Networking Equipment
Typical Application Circuit
Figure 1: Typical Application Circuit
YB1685 Rev.1.0
www.yobon.com.tw
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