STR6251 데이터 시트보기 (PDF) - Sanken Electric co.,ltd.
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STR6251 Datasheet PDF : 13 Pages
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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
Continued on the next page…
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
STR-W6200D-DS
1 34567
CV
ROCP
Damper Snubber
C4
PC1 C3
External Latch Circuit
(Optional)
C8
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
November 12, 2012
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