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YB1682 Datasheet, PDF (1/9 Pages) YOBON TECHNOLOGIES,INC. – 2A 380KHz 20V PWM Buck DC/DC Converter
YB1682
2A 380KHz 20V PWM Buck DC/DC Converter
Description
The YB1682 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
YB1682 serves as ideal power supply units
for portable devices.
Typical Application Circuit
Features
„ 2A Constant Output Current
„ 140mΩ RDSON Internal Power PMOSFET
Switch
„ Up to 92% Efficiency
„ Fixed 380KHz Frequency
„ Wide 3.6V to 20V Input Voltage Range
„ Output Adjustable from 1.222V to 18V
„ 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
„ White LED Backlighting
„ Handheld PCs and PDAs
„ Mobile Phone
„ DSC and DV Flash Light Application
Pin Configuration
Figure 1: Typical Application Circuit
YB1682 Rev.1.0
www.yobon.com.tw
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