LM5035A-1 National Semiconductor, LM5035A-1 Datasheet - Page 6

• Manufacturer Part Number: LM5035A-1
• Description: PWM Controller
• Manufacturer: National Semiconductor

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TSSOP 20 PIN
LM5035A
EP
16
17
18
19
20
LM5035A
LLP PIN
EP
16
17
18
19
21
10
20
22
1
TSSOP 28 PIN
LM5035A-1
21
22
23
24
28
18
25
26
27
1
2
3
4
Name
VCC
REF
SR2
SR1
VIN
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
EP
6
Output of the high voltage
start-up regulator.The
VCC voltage is regulated
to 7.6V.
Synchronous rectifier
driver output.
Synchronous rectifier
driver output.
Output of 5V Reference
Input voltage source
Exposed Pad, underside
of package
No connection
No connection
No connection
No connection
Description
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.
Control output of the synchronous
FET gate. Capable of 0.5A peak
current.
Control output of the synchronous
FET gate. Capable of 0.5A peak
current.
Maximum output current is 20mA.
Locally decoupled with a 0.1µF
capacitor.
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.
No electrical contact. Connect to
system ground plane for reduced
thermal resistance.
No electrical contact.
No electrical contact.
No electrical contact.
No electrical contact.
Application Information