UPSR104G-AG6-R Datasheet, PDF (1/8 Pages) Unisonic Technologies – CMOS IC

UNISONIC TECHNOLOGIES CO., LTD
UPSR104
Preliminary
HIGH PRECISION CC/CV
PRIMARY-SIDE PWM
CONTROLLER
 DESCRIPTION
The UTC UPSR104 is a primary controller mode charger and
adapter applications. The controlled variable is transferred by an
auxiliary winding from the secondary to the primary side. The
device integrates PWM controller to enhance the performance of
discontinuous conduction mode (DCM) flyback converters.
The UTC UPSR104 operates in primary-side sensing and
regulation. Opto-coupler and TL431 could be eliminated. It also
provides off-time modulation to linearly decrease PWM frequency
under light-load conditions so that low standby power can be
achieved.
The UTC UPSR104 achieves high precision CV/CC regulation
and high power efficiency. It offers comprehensive protection
coverage with auto-recovery features including Cycle-by-cycle
current limiting, VDD over voltage protection, VDD clamp, OTP,
leading edge blanking, VDD under voltage lockout, etc.
CMOS IC
65 ⁴
1 ²³
SOT-26
 FEATURES
* ±5% Constant Voltage Regulation at Universal AC input
* Built-in Primary winding inductance
* High Precision Constant Current Regulation at Universal AC input compensation
* Primary-side Sensing and Regulation Without TL431 and
* Programmable Cable drop Compensation
Opto-coupler
* Power on Soft-start
* Programmable CV and CC Regulation
* Built-in Leading Edge Blanking (LEB)
* Adjustable Constant Current and Output Power Setting
* Cycle-by-Cycle Current Limiting
* Built-in Secondary Constant Current Control with Primary Side * V_DD Under Voltage Lockout with Hysteresis
Feedback
(UVLO)
* Built-in Adaptive Current Peak Regulation
* V_DD OVP
* V_DD Clamp
 ORDERING INFORMATION
Ordering Number
UPSR104G-AG6-R
Package
SOT-26
Packing
Tape Reel
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