STCH03TR

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STMicroelectronics

196KHZ 11.5V~23V SO-8 AC-DC CONTROLLERS AND REGULATORS ROHS

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DocumentsProduct Change Notice EN Datasheet

STCH03TR

Active

STMicroelectronics

196KHZ 11.5V~23V SO-8 AC-DC CONTROLLERS AND REGULATORS ROHS

Deep-Dive with AI

DocumentsProduct Change Notice EN Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	STCH03TR

Duty Cycle	50 %
Fault Protection	Over Current, Over Voltage
Internal Switch(s)	False
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-25 °C
Output Isolation	Isolated
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Topology	Flyback
Voltage - Start Up	17 V
Voltage - Supply (Vcc/Vdd) [Max]	23 V
Voltage - Supply (Vcc/Vdd) [Min]	11.5 V

EVAL-STCH03-45W Series

45W / 12V power supply based on STCH03 QR flyback controller and SRK1000B adaptive synchronous rectification controller

Part	Fault Protection	Output Isolation	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Supplier Device Package	Duty Cycle	Voltage - Start Up	Topology	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Regulator Topology	Outputs and Type	Outputs and Type	Current - Output	Utilized IC / Part	Board Type	Frequency - Switching	Supplied Contents	Power - Output	Voltage - Output	Main Purpose	Voltage - Input [Max]	Voltage - Input [Min]
STMicroelectronics STCH03LTR	Over Current Over Voltage	Isolated	8-SOIC	3.9 mm	0.154 in	Surface Mount	8-SOIC	50 %	17 V	Flyback	23 V	11.5 V	-25 °C	125 °C
STMicroelectronics EVAL-STCH03-45W															Flyback	Isolated	1	3.75 A	STCH03	Fully Populated	154 kHz	Board(s)	45 W	12 V	AC/DC Primary and Secondary Side	265 VAC	90 VAC
STMicroelectronics STCH03TR	Over Current Over Voltage	Isolated	8-SOIC	3.9 mm	0.154 in	Surface Mount	8-SOIC	50 %	17 V	Flyback	23 V	11.5 V	-25 °C	125 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.63
		10	$ 1.46
		25	$ 1.38
		100	$ 1.14
		250	$ 1.06
		500	$ 0.94
		1000	$ 0.74
	Digi-Reel®	1	$ 1.63
		10	$ 1.46
		25	$ 1.38
		100	$ 1.14
		250	$ 1.06
		500	$ 0.94
		1000	$ 0.74
	Tape & Reel (TR)	2500	$ 0.69
		5000	$ 0.66
		12500	$ 0.63
LCSC	Piece	1	$ 1.22
		10	$ 1.19
		30	$ 1.17
		100	$ 1.15
Newark	Each (Supplied on Cut Tape)	1	$ 1.74
		10	$ 1.27
		25	$ 1.22
		50	$ 1.17
		100	$ 1.12
		250	$ 1.10
		500	$ 1.09
		1000	$ 1.06

Description

General part information

EVAL-STCH03-45W Series

The STCH03 current-mode controller is designed for an offline quasi-resonant ZVS (zero-voltage-switching at switch turn-on) flyback converter.

It combines a high-performance low-voltage PWM controller chip and a 650V HV start-up cell in the same package.

Constant output voltage (CV) regulation loop is achieved by secondary side feedback, the output voltage information is transfered via an optocoupler on the FB pin of the STCH03 to get the selected output voltage.

Documents

Technical documentation and resources

Product Change Notice EN

Datasheet