UD05121G-AF5-R Datasheet, PDF (1/7 Pages) Unisonic Technologies – Build-in soft start function

UNISONIC TECHNOLOGIES CO., LTD
UD05121
LINEAR INTEGRATED CIRCUIT
1.2A 1.5MHZ SYNCHRONOUS
BUCK CONVERTER
 DESCRIPTION
The UTC UD05121 is a monolithic synchronous buck regulator
with a built in internal power MOSFET. It achieves 1.2A continuous
output current fix switching frequency with excellent load and line
regulation.
Current mode operation provides fast transient response and
eases of loop stabilization.
Fault condition protection includes cycle-by-cycle current
limiting, output short circuit protection and thermal shutdown. In
shutdown mode the regulator draws less than 1μA of supply
current. Internal soft-start minimizes the inrush supply current at
initial startup.
The UTC UD05121 requires a minimum number of readily
available standard external components.
 FEATURES
　* 2.5V~5.5V input voltage range
* Up to 1.2A Output Current
* 300/200mΩ Internal Power MOSFET Switch
* Stable with Low ESR Output Ceramic Capacitors
* Up to 95% Efficiency
* Less than 1μA Shutdown Current
* 1.5Mhz Switching Frequency
* Thermal Shutdown Protection
* Current limit and short circuit protections.
* Output Adjustable from 0.6V to V_IN
* Build-in soft start function
 ORDERING INFORMATION
Ordering Number
UD05121G-AF5-R
Package
SOT-25
Packing
Tape Reel
 MARKING
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
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