STR3A155D
STR3A155D is Off-Line PWM Controllers manufactured by Sanken.
- Part of the STR3A100 comparator family.
- Part of the STR3A100 comparator family.
Off-Line PWM Controllers with Integrated Power MOSFET
STR3A100 Series
General Descriptions
The STR3A100 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.
Package
DIP8
Not to Scale
Features
- Low Thermal Resistance Package : 44 W(max.) in
Universal Design (open frame)
- Current Mode Type PWM Control
- No Load Power Consumption < 15m W
- Auto Standby Function
Normal Operation ----------------------------- PWM Mode Standby ---------------------------- Burst Oscillation Mode
- Soft Start Function
- 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); auto-restart
- Overvoltage Protection (OVP); latched shutdown or auto-restart
- Thermal Shutdown (TSD); latched shutdown or auto-restart
Typical Application Circuit
BR1 C1
C4
T1 D51
C5 R1...
