TDA8385 查看數據表（PDF） - Philips Electronics
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TDA8385 Datasheet PDF : 21 Pages
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Philips Semiconductors
Control circuit for a Self-Oscillating
Power Supply (SOPS)
Preliminary specification
TDA8385
handbook, full pagewidth
stand-by voltage input
Vsb 10
latch
2.5 V
2V
25
2.5 V
STAND-BY IX
Vr
Vsim
PWM
8
IV
comparator
TDA8385
latch
OUTPUT
LED
STAGE
15
2
LED driver output
17
LED DRIVER VI
Q (23)
18
(28)
26
100 mV 10
S
FF Q
R
13
14
16
demagnetization
LED CONTROL V
demagnetization
Vc
DELAY
12
I sim
I12
12
0.2 I12
9
5
I peak
DEM
15
11
115 mV
6
SAWTOOTH GENERATOR
II
current simulation
input
peak-current
setting input
demagnetization
input
delay setting
March 1994
(17)
100 µA
slow
discharge
21
OVER-VOLTAGE PROTECTION
Q
R
FF
23
Q
S
(28)
24
115 mV
over voltage
8
over-voltage
22
protection
2.5 V
VIII
MCD418
Fig.2 Block diagram; part B (continued from Fig.1; part A).
4
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