STR6251 データシートの表示（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
Functional Block Diagram
PWM Off-Line Switching Regulator ICs
VCC
FM /ELP
FB
UVLO
15.5 V / 8.9 V
REG
VREG
PWM OSC
Dmax 75%
SQ
R
28.5 V OVP
7.1 V ELP
TSD
7.1 V
RESET
R
SQ
RQ
S
STARTUP
Istartup
=1.6 mA
DRV
Frequency
Modulation
7.8 V
160 μA
S2
Q
OLP
CK
tDLY = S1
tFM ×16 R
Slope
Compensation
OCP
Drain Peak Current
Compensation
Feedback
Control
LEB
D/ST
S/OCP
GND
Pin-out Diagram
1 D/ST
3 S/GND
4 VCC
5 GND
6 FB
7 FM/ELP
(LF2003)
Pin List Table
Number
Name
1
D/ST
2
–
3
S/OCP
4
VCC
5
GND
6
FB
7
FM/ELP
Function
MOSFET drain and input of the startup current
(Pin removed)
MOSFET source and input of Overcurrent Protection (OCP) signal
Power supply voltage input for Control Part and input of Overvoltage
Protection (OVP) signal
Ground
Input for constant voltage control signal
Capacitor connection pin for frequency modulation and input of
External Latch Protection
STR-W6200D-DS
SANKEN ELECTRIC CO., LTD.
9
November 12, 2012
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