STR-W6251D, STR-W6252D, and STR-W6253D
PWM Off-Line Switching Regulator ICs
Features and Benefits
▪ TO-220 fully-molded...
STR-W6251D, STR-W6252D, and STR-W6253D
PWM Off-Line Switching Regulator ICs
Features and Benefits
▪ TO-220 fully-molded package with 6 pins ▪ Current mode PWM control ▪ PWM and frequency modulation functions: reduces EMI
noise, simplifies EMI filters, and cuts cost by external part reduction ▪ Built-in Slope Compensation circuit: avoids subharmonic oscillation ▪ Automatic Standby Mode function (Input Power < 40 mW at no load) ▫ Normal operation: PWM mode ▫ Light load operation: Standby mode (burst oscillation) ▪ Built-in Audible Noise Suppression function during Standby mode
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Package: TO-220F-6L
Not to scale
Description
STR-W6200D series are power ICs for switching power supplies, incorporating a power
MOSFET and a current mode PWM controller IC in one package.
Including a startup circuit and a standby function in the controller, the product achieves low power consumption, low standby power, and high cost-effectiveness in power supply systems, while reducing external components.
Applications:
Switching power supplies for electronic devices such as: White goods Consumer electronics Office automation Industrial equipment Communication equipment
Typical Application
VAC
Clamp Snubber Circuit
T1 D3
L2
VOUT
C10 R9
P
R3 PC1
R6
C1
D4
S
R4 R7 C5 C6 R 5
C7
U1
STR-W6200D
D1 R2
C2 D
U2 R8 GND
D/ST S/OCP VCC GND FB FM/ELP
STR-W6200D-DS
1 34567
CV ROCP
Damper Snubber
C4 PC1 C3
External Latch Circuit (Optional)
C8
SANKEN ELECTRI...