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STR-A6000 Series
Power IC for PWM Type Switching Power Supply with Low Noise and Low Standby Power
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.
Features
Current-Mode Type PWM Control DIP-8 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
Product Lineup
POUT 230VAC/Universal STR-A6051M 3.95 16W / 12W STR-A6052M 2.8 20W / 16W 67 650 STR-A6053M 1.9 24W / 20W STR-A6059H 6.0 10W / 8W STR-A6062H 2.8 15W / 13W 100 700 STR-A6069H 6.0 10W / 8W STR-A6079M 67 800 19.2 8W / 5W Note 1: The maximum output power is derived from thermal specifications. The actual output power may be available around 120 -140% of the above values, respectively, but may be limited by ON duty setting on transformer design or lower output voltage. Product No fosc (kHz) MOSFET VDSS MIN (V) RDS(ON) MAX ()
(Note 1)
2010/08
Typical Application Circuit
V OUT VAC
GND
8 7 D/ST D/ST 5 Vcc
STR-A6000
FB/ S/OCP BR GND OLP 1 23 4
Typical Electrical Characteristics STR-A6079M Efficiency & Input Power at Standby
Efficiency Output Power POUT
Standby Power (POUT: 5W Power Supply)
100VAC
90 80
220VAC
250 PIN (mW) 200 150 100 50 0
100VAC
220VAC
70 60 50 40 30 20 0 2 Output Power 4 POUT (W) 6
Load At No Load 19.6mW 100VAC 19.6mW 100VAC 0VAC 20.0mW 220VAC
Efficiency
(%)
Input Power
0
50 100 150 Output Power POUT (mW) Without Brown-IN/Brown-OUT Detection Resistor
Warning The contents in this document are subject to changes, for improvement and other purposes, without notice. Make sure that this is the latest version of the document before use. The operation and circuit examples in this document are provided for reference purposes only. Sanken assumes no liability for violation of industrial property, intellectual property, or other rights of Sanken or third parties, that stem from these examples. The user must take responsibility for considering and determining which objects the products in this document are used with. Although Sanken will continue to improve the quality and reliability of its products, semiconductor products, by their nature, have certain fault and failure rates. The user must take responsibility for designing and checking to secure the device and system so that a part failure may not lead to human injury, fire, damages, or other losses. The contents in this document must not be transcribed or copied without Sanken's written consent.
SANKEN ELECTRIC CO.,LTD.
2010/08

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