Description
CHERRY – CHERRY CS3524N Dual-Output Voltage-Mode SMPS Circuit – PWM Control Circuit fmax 300kHz 2 Output Drivers
The CS3524A PWM control circuit retains the same versatile architecture of the industry standard CS3524 (SG3524) while adding substantial improvements.
The CS3524 is pin-compatible with “non-A” versions, and in most applica- tions can be directly interchanged. The CS3524A, however, eliminates many of the design restrictions which had pre- viously required additional external circuitry.
The CS3524A includes a precision 5V reference trimmed to ±1% accuracy (eliminating the need for potentiometer adjustments), an error amplifier with an output voltage swing extending to 5V, and a current sense amplifier use- ful in either the ground or power sup- ply output lines. The uncommitted 60V, 200mA NPN output pair greatly enhances the output drive capability.
The CS3524A features an undervoltage
lockout circuit which disables all inter-
nal circuitry (except the reference) until
the input voltage has risen to 8V. This
holds standby current low until turn-
on, and greatly simplifies the design of
low power, off-line supplies. The turn-
on circuit has approximately 600mV of
hysteresis for jitter free activation.
Manufacturer:Cherry Switch
Datasheet:CS3524N.pdf
