UPSRB01A Datasheet, PDF (1/7 Pages) Unisonic Technologies – HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR

UNISONIC TECHNOLOGIES CO., LTD
UPSRB01A
Preliminary
LINEAR INTEGRATED CIRCUIT
HIGH PRECISION CC/CV
PRIMARY SIDE SWITCHING
REGULATOR
 DESCRIPTION
The UTC UPSRB01A is a primary control unit for switch mode
charger and adapter applications. The controlled variable is
transferred by an auxiliary winding from the secondary to the
primary side. The device uses Pulse Frequency Modulation
(PFM) method to build discontinuous conduction mode (DCM)
flyback power supplies.
The UTC UPSRB01A operates in primary-side sensing and
regulation. Opto-coupler and TL431 could be eliminated. It also
eliminates the need of loop compensation circuitry while
maintaining stability.
The UTC UPSRB01A 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, output over voltage protection,
V_DD over voltage protection, feedback loop open protection, short
circuit protection, leading edge blanking, V_DD under voltage
lockout, etc.
 FEATURES
54
6
1 ²³
SOT-26
* ±5% constant voltage regulation at universal AC input
* Primary side control without TL431 and opto-coupler
* High precision constant current regulation at universal AC input
* Programmable CV and CC regulation
* Eliminates control loop compensation circuitry
* Flyback topology in DCM operation
* Random frequency modulation to reduce system EMI
* Driver BJT switch
* Built-in leading edge blanking
* Built-in primary winding inductance
compensation
* Open circuit protection
* Output over voltage protection
* V_DD over voltage protection
* Short circuit protection
* Over temperature protection
 ORDERING INFORMATION
Ordering Number
UPSRB01AG-AG6-R
Package
SOT-26
Packing
Tape Reel
UPSRB01AG-AG6-R
(1)Packing Type
(2)Package Type
(3)Green Package
(1) R: Tape Reel
(2) AG6: SOT-26
(3) G: Halogen Free and Lead Freee
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