UNISONIC TECHNOLOGIES CO., LTD
UC3848
LINEAR INTEGRATED CIRCUIT
HIGH PERFORMANCE CURRENT
MODE CONTROLLERS
DESCRIPTION
The UTC UC3848 is designed to provide several special
enhancements to satisfy the needs, for example, Power-Saving mode
for low standby power (<0.3W), Frequency Hopping , Constant Output
Power Limiting , Slope Compensation ,Over Current Protection (OCP),
Over Voltage Protection (OVP), Over Load Protection (OLP), Under
Voltage Lock Out (UVLO), Short Circuit Protection (SCP) , Over
Temperature Protection (OTP) etc. IC will be shutdown or can
auto-restart in situations.
FEATURES
* Low Startup Current (about 22μA)
* Fixed Switching Frequency(Norm. is 68KHz)
* Frequency Hopping for Improved EMI Performance.
* Lower than 0.3W Standby Power Design
* Linearly Decreasing Frequency to 26KHz During Light Load
* Soft Start
* Internal Slope Compensation
* Constant Power Limiting for Universal AC input Range
* Gate Output Maximum Voltage Clamp(15V)
* Max Duty Cycle 74%
* Over Temperature Protection
* Overload Protection
* Over Voltage Protection
* Leading Edge Blanking
* Cycle-by-Cycle Current Limiting
* Under Voltage Lock Out
* Short Circuit Protection
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UC3848L-D08-T
UC3848G-D08-T
UC3848L-S08-R
UC3848G-S08-R
Package
DIP-8
SOP-8
Packing
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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