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TDA8385 Datasheet(PDF) 2 Page - NXP Semiconductors

Part # TDA8385
Description  Control circuit for a Self-Oscillating Power Supply SOPS
PDF  21 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA8385 Datasheet(HTML) 2 Page - NXP Semiconductors

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March 1994
3
Philips Semiconductors
Preliminary specification
Control circuit for a Self-Oscillating
Power Supply (SOPS)
TDA8385
BLOCK DIAGRAMS
handbook, full pagewidth
MCD417
29
V ts
DIFFERENTIAL AMPLIFIER
CONTROL PART
REGULATION
INDICATOR
(2.5 V)
27
reset (28)
quick
discharge
CLAMP
50
µA
50
µA
charge
19
2.5 V
TCG
4
3
V TCG
V diff
Vss +
MINIMUM
VOLTAGE
CLAMP
6
X
III
VII
fo
V
Vmv
fb
V
13
1
RIO
11 V diff
9
4
7
Vss
7
16
14
3
REFERENCE
BLOCK
STABILIZED
SUPPLY
DETECTOR
VP (min)
28
1
2
SUPPLY REFERENCES
(28, 27, 23)
reset
latch
I ref
I ref
Vstab
Vref
Vref
I
current reference
setting
feed forward
input
regulation indicator
output
differential amplifier
output
slow start voltage
input
feedback voltage
input
transistor-on
setting input
VP
GND
SLOW START
V ts
5
Ton(min)
Ton (min)
Fig.1 Block diagram; part A (continued in Fig.2; part B).



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