STR3A253
STR3A253 is Off-Line PWM Controllers manufactured by Sanken.
- Part of the STR3A200 comparator family.
- Part of the STR3A200 comparator family.
Off-Line PWM Controllers with Integrated Power MOSFET
STR3A200 Series
Data Sheet
Description
The STR3A200 series are power ICs for switching power supplies, incorporating a MOSFET and a current mode PWM controller IC.
The low standby power is acplished 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 ponents.
Features
- Low Thermal Resistance Package
- Current Mode Type PWM Control
- Soft Start Function
- Auto Standby Function
No Load Power Consumption < 15m W
- Operation Mode
Normal Operation: PWM Mode Standby : Burst Oscillation Mode
- Random Switching Function
- Slope pensation Function
- Leading Edge Blanking Function
- Bias Assist Function
- Protections
- Two Types of Overcurrent Protection (OCP) : Pulse-by-Pulse, built-in pensation circuit to minimize OCP point variation on AC input voltage
- Overload Protection (OLP) : Aauto-restart
- Overvoltage Protection (OVP) : Latched shutdown or auto-restart
- Thermal Shutdown (TSD) : Latched shutdown or auto-restart with hysteresis
Typical Application
BR1 C1
C4
T1
D51
C5
R1...
