Current-Mode Type PWM Control
Built-in Random Switching Function
The function reduces the EMI noise and enables a simplified (low-cost) EMI filter,
by the slight- random-change of PMW frequency fOSC.
Auto-Standby Function: The burst-oscillation enables the low standby power. Input Power PIN < 25mW at no load
Built-in Startup Circuit, enabling low power consumption
Brown-In / Brown-Out Function
The function enables the oscillation start/stop by externally rated input voltage and makes protections at low input
voltage.
Overcurrent Protection (OCP) with Built-in Input Compensation Circuit:
The protection has less AC input voltage dependency.
Overload Protection (OLP) with Built-in Delay Timer
High Speed Latch Release Function
The function releases the latch immediately at AC supply OFF, after the latch protection operation.
Bias-Assist Function, reducing Operating VCC voltage drop
The function improves the startup operation and makes a low VCC capacitor applicable.
Leading Edge Blanking Function
Slope Compensation Function
Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET
Various Protections
Overcurrent Protection (OCP)--------------------------------- Pulse-by-Pulse
Overload Protection (OLP) ------------------------------------ Auto-Restart
Overvoltage Protection (OVP) -------------------------------- Latch Shutdown
Thermal Shutdown Protection (TSD) ------------------------ Latch Shutdown
■ Applications
Battery Chargers; Mobile Phones, Digital Cameras, Camcorders, Electric Shavers, Emergency/Inducement Lights etc.
Standby Power Supplies; LCD-TVs, PDP-TVs, Desk-Top PCs, LBPs, Audio Equipment, etc.
Small SMPSs; Ink Jet Printers, BD/DVD Players, CD Players, Set-Top-Boxes, etc.
Auxiliary Power Supplies for Controllers; Air Conditioners, Refrigerators, Washing Machines, Dish Washers, etc
■ General Descriptions
The STR-A6000 series products are power ICs for switching power supplies, incorporating a power MOSFET and a current-mode type 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.
Feature
- Current mode PWM control
- Brown-in and brown-out function
- Auto standby function Normal load operation: PWM mode Light load operation: Burst mode
- No load power consumption PIN < 25 mW
- Random Switching function
- Slope Compensation function
- Leading Edge Blanking function
- Audible noise suppression function during standby mode
- Protection features Overcurrent protection function (OCP): pulse by pulse,with input compensation function Overvoltage protection function (OVP): latch shutdown Overload protection function (OLP)：auto restart, with timer Thermal shutdown protection (TSD): latch shutdown
Applications
- Low power AC/DC adapter
- White goods
- Auxiliary power supply
- OA, AV, Industrial equipment, etc.
(Picture: Pinout)
