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LM5035ASQ Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM5035ASQ
Description  PWM Controller with Integrated Half-Bridge and SyncFET PWM Controller with Integrated Half-Bridge and SyncFET
PDF  30 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5035ASQ Datasheet(HTML) 6 Page - National Semiconductor (TI)

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TSSOP 20 PIN
LM5035A
LLP PIN
LM5035A
TSSOP 28 PIN
LM5035A-1
Name
Description
Application Information
16
16
21
VCC
Output of the high voltage
start-up regulator.The
VCC voltage is regulated
to 7.6V.
If an auxiliary winding raises the
voltage on this pin above the
regulation setpoint, the Start-up
Regulator will shutdown, thus
reducing the internal power
dissipation.
17
17
22
SR2
Synchronous rectifier
driver output.
Control output of the synchronous
FET gate. Capable of 0.5A peak
current.
18
18
23
SR1
Synchronous rectifier
driver output.
Control output of the synchronous
FET gate. Capable of 0.5A peak
current.
19
19
24
REF
Output of 5V Reference
Maximum output current is 20mA.
Locally decoupled with a 0.1µF
capacitor.
20
21
28
VIN
Input voltage source
Input to the Start-up Regulator.
Operating input range is 13V to
100V with transient capability to
105V. For power sources outside of
this range, the LM5035A can be
biased directly at VCC by an
external regulator.
1
NC
2
NC
3
NC
4
NC
18
NC
25
NC
26
NC
27
NC
EP
EP
EP
Exposed Pad, underside
of package
No electrical contact. Connect to
system ground plane for reduced
thermal resistance.
1
NC
No connection
No electrical contact.
10
NC
No connection
No electrical contact.
20
NC
No connection
No electrical contact.
22
NC
No connection
No electrical contact.
www.national.com
6



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