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.
Features
2A Constant Output Current
140mΩ R
DSON
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
Typical Application Circuit
Figure 1: Typical Application Circuit
Pin Configuration
YB1682 Rev.1.0
www.yobon.com.tw
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YOBON [ YOBON TECHNOLOGIES,INC. ]
