TDA8385 Datasheet, PDF (1/21 Pages) NXP Semiconductors – Control circuit for a Self-Oscillating Power Supply SOPS

Philips Semiconductors
Control circuit for a Self-Oscillating
Power Supply (SOPS)
Preliminary specification
TDA8385
FEATURES
• Bandgap reference generator
• Slow-start circuitry
• Low-loss peak current sensing
• Over-voltage protection
• Hysteresis controlled stand-by
function
• Error amplifier with gain setting
• Programmable transfer character
generator
• Protection against open- and
short-circuited feedback loop
• Over-load current fold back
characteristic
• LED driver
• Demagnetization protection
• Programmable determination of
switch-on moment of switching
transistor for low-switching losses
• Feed-forward input
• Regulation-indicator output
• Programmable minimum on-time of
switching transistor
• Accurate peak-current setting.
GENERAL DESCRIPTION
The TDA8385 is intended to be used
in combination with the opto-coupler
(CNR50) as a control unit for a
self-oscillating power supply.
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
TDA8385
PINS
16
PIN POSITION
DIL
PACKAGE
MATERIAL
plastic
CODE
SOT38WBE
March 1994
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