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Overview
| Topology | Buck Converter |
| Input voltage | 85-265 V |
| Switching frequency | 0.05-0.06 kHz |
| Output 1 | 24 V / 1 A |
| IC revision | 1.0 |
Description
The STR3A453D is a power IC for switching power supplies, incorporating a power MOSFET and current-mode PWM controller IC.The product achieves 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 | Application | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890324023023 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | Across the mains | 100 nF | X2 | 300 | 0.1 | 30 GΩ | -40 °C up to +105 °C | 10 | Bulk | ±10% | Pitch 10 mm | -40 °C up to +105 °C | – | – | – | – | – | – | 275 | – | – | 13 | 7 | 13 | Boxed THT | ||
 | 7448640415 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FC Common Mode Power Line Choke | – | – | – | – | – | – | – | – | – | – | UT20V | -40 °C up to +125 °C | – | – | – | 0.8 | 13 | 0.81 | 250 | 2000 | MnZn | 21.3 | 16.6 | 22.5 | THT | ||
 | 885012007060 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | 330 pF | – | – | – | 10 GΩ | – | – | 7" Tape & Reel | ±5% | 0805 | -55 °C up to +125 °C | 1000 | NP0 Class I | 0.5 | – | – | – | 50 | – | – | 2 | 1.25 | 0.6 | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890324023023 | SPEC | |
| 7448640415 | SPEC | |
| 885012007060 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | 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 |
|---|