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Overview
| Topology | Buck Converter |
| Input voltage | 85-265 V |
| Switching frequency | 0.05-0.06 kHz |
| Output 1 | 15 V / 1 A |
| IC revision | 1.0 |
Description
The STR3A453D is a power IC for switching power supplies, incorporating a power MOSFET and a current-mode PWM controller IC.The product achieve low power consumption and low standby power by including a startup circuit and a standby function that automatically switch operation modes – PWM mode in normal operation and burst-oscillation mode under light-load conditions. Its enhanced protection functions also enable higher cost-effective power supply systems with few external components.
Features
・Low Thermal Resistance Package・Improving circuit efficiency (Since the step drive control can keep VRM of secondary rectification diodes low, the circuit efficiency can be improved by low VF.)・Current Mode Type PWM Control・Soft Start Function・Auto Standby Function No Load Power Consumption < 15mW・Operation Mode Normal Operation: PWM Mode Light Load Operation: Green-Mode Standby: Burst Oscillation Mode・Random Switching Function・Slope Compensation Function・Leading Edge Blanking Function・Bias Assist Function・Protections Overcurrent Protection (OCP): Pulse-by-Pulse Overload Protection (OLP): Auto-restart Overvoltage Protection (OVP): Auto-restart Thermal Shutdown (TSD): Auto-restart with hysteresis
Typical applications
- AC/DC adapter
- White goods
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | Tol. C | Size | Operating Temperature | Q(%) | Ceramic Type | Fl(mm) | IR(A) | L(mH) | RDC max.(Ω) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 100 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance100 nF | Safety ClassX2 | Rate of Voltage Rise300 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch10 mm | PackagingBulk | Capacitance±10% | SizePitch 10 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | Rated Voltage275 V (AC) | – | – | Length13 mm | Width7 mm | Height13 mm | MountBoxed THT | ||||
 | WE-FC Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FC Common Mode Power Line Choke | – | – | – | – | – | – | – | – | SizeUT20V | Operating Temperature -40 °C up to +125 °C | – | – | – | Rated Current0.8 A | Inductance13 mH | DC Resistance0.81 Ω | Rated Voltage250 V (AC) | Insulation Test Voltage2000 V (AC) | MaterialMnZn | Length21.3 mm | Width16.6 mm | Height22.5 mm | MountTHT | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, 470 pF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance470 pF | – | – | – | Insulation Resistance10 GΩ | – | Packaging7" Tape & Reel | Capacitance±5% | Size0805 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | Ceramic TypeNP0 Class I | Pad Dimension0.5 mm | – | – | – | Rated Voltage50 V (AC) | – | – | Length2 mm | Width1.25 mm | Height0.8 mm | – |