STR-W6251D
30 W-Universal Input/45 W-230 Vac Input PWM Switching Regulators
Features and Benefits
▪ Overcurrent protect...
STR-W6251D
30 W-Universal Input/45 W-230 Vac Input PWM Switching
Regulators
Features and Benefits
▪ 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 peripheral components
▪ Avalanche-guaranteed MOSFET improves device capability of withstanding excess surge voltage, providing a simple surge absorber circuit without breakdown voltage derating
▪ Start-up circuit eliminates the need for a start-up resistor, and helps to reduce input power consumption
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Package: TO-220
Description
The STR-W6200D series are current-mode PWM ICs that incorporate controller chips. These devices are manufactured using a proprietary high-voltage BCD process, and avalancheguaranteed MOSFETs. These elements allow power supply systems designs that are highly reliable and simple, with fewer peripheral components. These ICs also provide Auto-Burst mode operation, which lowers input power requirements at light loads, and improves efficiency over the entire load range and universal-input range.
Applicatons include:
▪ TV set top box ▪ LCD PC monitor, LCD TV ▪ Printer, scanner ▪ General consumer, PC, and industrial 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 OS...