TDA8385 Philips Semiconductors, TDA8385 Datasheet - Page 10

• Manufacturer Part Number: TDA8385
• Description: Control circuit for a Self-Oscillating Power Supply SOPS
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Stand-by circuit (Block IX)
During stand-by operation the voltage V
SOPS operates in a burst mode. When the voltage on pin 10 exceeds 2.5 V the LED driver is permanently activated. The
LED driver is released again if the voltage is below 2 V (see Fig.11).
March 1994
handbook, full pagewidth
Control circuit for a Self-Oscillating
Power Supply (SOPS)
output sub-section 25
I LED
(mA)
V sb
(V)
0
0
0
sb
Fig.11 Stand-by operation; burst mode.
is supplied from the SOPS via thyristor TH1 (see Fig.16). In the stand-by state,
11
t
t
t
MCD410
2 V
2.5 V
5 mA
Preliminary specification
TDA8385