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STR3A251

Sanken electric
Part Number STR3A251
Manufacturer Sanken electric
Description Off-Line PWM Controllers
Published May 8, 2016
Detailed Description Off-Line PWM Controllers with Integrated Power MOSFET STR3A200 Series Data Sheet Description The STR3A200 series are p...
Datasheet PDF File STR3A251 PDF File

STR3A251
STR3A251


Overview
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 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 ● Low Thermal Resistance Package ● Current Mode Type PWM Control ● Soft Start Function ● Auto Standby Function No Load Power Consumption < 15mW ● Operation Mode Normal Operation: PWM Mode Standby : Burst Oscillation Mode ● Random Switching Function ● Slope Compensation Function ● Leading Edge Blanking Function ● Bias Assist Function ● Protections − Two Types of Overcurrent Protection (OCP) : Pulse-by-Pulse, built-in compensation 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 Circuit VAC BR1 C1 C4 T1 D51 C5 R1 P D1 C51 S 8 76 5 D/ST D/ST DN/SCT D/ST U1 STR3A200 S/OCP VCC GND FB/OLP 1234 D2 R2 C2 D L51 R54 PC1 R51 R55 R52 C52 R53 U2 R56 VOUT C53 GND ROCP C3 PC1 CY TC_STR3A200_1_R1 Package DIP8 Not to Scale Lineup ● Electrical Characteristics fOSC(AVG) = 67 kHz VDSS(min.
) = 650 V Products STR3A25× STR3A25×D OVP, TSD Operation Latched shutdown Auto restart ● MOSFET オン、 POUT* Products STR3A251 STR3A251D POUT POUT RDS(ON) (Adapter) (Open frame) (max.
) AC230V AC85 ~265V AC230V AC85 ~265V 4.
0 Ω 29.
5 W 19.
5 W 37 W 23 W STR3A253 1.
9 Ω 37 W 27.
5 W 53 W 35 W STR3A253D STR3A255 1.
1 Ω 45 W 35 W 65 W 44 W STR3A255D * The output power is actual continues power that is measured at 50 °C ambient.
The peak output power can be 120 to 140 % of the value ...


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