Description
STR-W6251D 30 W-Universal Input/45 W-230 Vac Input PWM Switching Regulators .
The STR-W6200D series are current-mode PWM ICs that incorporate controller chips.
Features
* ▪ Overcurrent protection (OCP) with ac input voltage compensation function; no additional peripheral circuits required
* minimizes dependency of OCP on ac input
▪ Overload protection (OLP) with integrated timer reduces power stress (temperature rise) at overload condition, requires no peripher
Applications
* requiring SMPS power supply with standby mode
Not to scale
Functional Block Diagram
VCC
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 RST
R SQ
RQ S
STARTUP Istartup =1.6 mA
DRV
FM/ELP 12 V
FB
Frequency Modulation
7.8 V 160 μA
S2
Q
OLP
CK
tOLP = S1
