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Technical Specifications
Parameters and characteristics for this part
| Specification | STCH03LTR |
|---|---|
| Duty Cycle | 50 % |
| Fault Protection | Over Voltage, Over Current |
| Frequency - Switching | 196 kHz |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -25 °C |
| Output Isolation | Isolated |
| Package / Case | 0.154 in |
| Package / Case | 8-SOIC |
| Package / Case | 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 |
STCH03 Series
45W / 12V power supply based on STCH03 QR flyback controller and SRK1000B adaptive synchronous rectification controller
| Part | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Topology | Fault Protection | Duty Cycle | Frequency - Switching | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Start Up | Output Isolation | Package / Case | Package / Case | Package / Case | Supplier Device Package | Internal Switch(s) | Mounting Type | Outputs and Type | Outputs and Type | Power - Output | Supplied Contents | Board Type | Main Purpose | Current - Output | Voltage - Output | Contents | Regulator Topology | Voltage - Input [Min] | Voltage - Input [Max] | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
STMicroelectronics | 11.5 V | 23 V | Flyback | Over Current Over Voltage | 50 % | 196 kHz | 125 °C | -25 °C | 17 V | Isolated | 0.154 in | 8-SOIC | 3.9 mm | 8-SOIC | Surface Mount | ||||||||||||||
STMicroelectronics | 11.5 V | 23 V | Flyback | Over Current Over Voltage | 50 % | 196 kHz | 125 °C | -25 °C | 17 V | Isolated | 0.154 in | 8-SOIC | 3.9 mm | 8-SOIC | Surface Mount | ||||||||||||||
 STMicroelectronics | 154 kHz | 1 Isolated Output Isolated | 1 | 45 W | Board(s) | Fully Populated | AC/DC Primary and Secondary Side | 3.75 A | 12 V | Board(s) | Flyback | 90 VAC | 265 VAC | STCH03 | |||||||||||||||
STMicroelectronics | 11.5 V | 23 V | Flyback | Over Current Over Voltage | 50 % | 196 kHz | 125 °C | -25 °C | 17 V | Isolated | 0.154 in | 8-SOIC | 3.9 mm | 8-SOIC | Surface Mount |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 0.66 | |
Description
General part information
STCH03 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