ACTIVE
STR4A164D
The STR4A100 series are power ICs for switching power supplies, incorporating a sense MOSFET and a current mode PWM controller IC. The low standby power is accomplished by the automatic switching between the PWM operation in normal operation and the burst-oscillation under light load conditions. The product achieves high cost-performance power supply systems with few external components.
Design Support
Related Documents
Features
-
● Auto Standby Function
No Load Power Consumption < 10 mW
● Operation Mode
Normal Operation PWM Mode
Standby Burst Oscillation Mode
● Current Mode Type PWM Control
● Random Switching Function
● Slope Compensation Function
● Leading Edge Blanking Function
● Build-in Startup Circuit
● Bias Assist Function
● Soft Start Function
● Protections
Overcurrent Protection (OCP) : Pulse-by-Pulse
Overload Protection with timer (OLP) : Auto-Restart
Overvoltage Protection (OVP) : Auto-Restart
Thermal Shutdown Protection : (TSD) Auto-Restart
Application
-
● White goods
● Auxiliary power supply
● Low power AC/DC adapter
● Battery Chargers
● Other SMPS
Specifications
| Control Method | PWM |
|---|---|
| Type | Power IC |
| Output Current | 8.5 W |
| RDS(ON) (max.) | 12.900 Ω |
| VDSS (min.) | V |
| VCC (max.) | V |
| Oscillating Frequency(typ.) | kHz |
| OCP | |
| OLP | |
| OVP | |
| Brown-in / out | |
| TSD | Auto Restart |
| Power Consumption at No Load | |
| Package Weight (Typ.) | 0.51 g |
Typical Application
Block Diagram
Pin Configuration Definitions
Physical Dimensions
Selection Guide
STR4A100LineupLastletterofpart# S：SOIC8、D：DIP8
| Part number | PWM frequency | Ron | IDLIM(H) |
|---|---|---|---|
| STR4A162S STR4A162D | 65kHz | 24.6Ω | 0.365A |
| STR4A164D | 12.9Ω | 0.520A | |
| STR4A164HD | 100kHz | 0.485A |
Questions or Comments?
Please feel free to contact us if you cannot find the desired product from the lineup.