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STR-S6401 AND STR-S6401F
OFF-LINE SWITCHING REGULATORS – WITH POWER MOSFET OUTPUT
DRAIN 1
LATCH OSC...
www.DataSheet4U.com
STR-S6401 AND STR-S6401F
OFF-LINE SWITCHING REGULATORS – WITH POWER
MOSFET OUTPUT
DRAIN 1
LATCH OSC.
Data Sheet 28101
SOURCE
2
GATE POWER GROUND SOFT START OVER-CURRENT PROTECTION
V IN
3
PWM +
4
+
These devices are specifically designed to meet the requirements for increased integration and reliability in off-line flyback (STR-S6401) and forward (STR-S6401F) converters operating in a fixed-frequency PWM mode. Each device incorporates the primary control and drive circuits with an avalanche-rated power
MOSFET. Crucial system parameters such as switching frequency and maximum duty cycle are fixed during manufacture. The STR-S6401 and STR-S6401F differ only in their maximum duty cycle. Control circuit decoupling and layout are optimized within each device. Cycle-by-cycle and average-current limiting, soft start, under
voltage lockout with hysteresis, and thermal shutdown protect the device during all normal and overload conditions. The performance and reliability of these devices, and their variable-frequency counterparts, has been proven in substantial volume production. The requirements of high dielectric isolation and low transient thermal impedance and steady-state thermal resistance are satisfied in an over-molded, 9-pin single in-line power package. Similar off-line switching regulators, with output ratings to 800 V at 5 A, are also available.
5
6
7
UVLO
REF.
SIGNAL GROUND FDBK
8
9
Dwg. PK-003
ABSOLUTE MAXIMUM RATINGS
Supply
Voltage, V...