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LM5041 Datasheet(PDF) 2 Page - Texas Instruments

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Part # LM5041
Description  Cascaded PWM Controller
PDF  21 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM5041 Datasheet(HTML) 2 Page - Texas Instruments

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1
2
3
4
5
6
7
8
9
10
VIN
FB
COMP
VCC
UVLO
PGND
CS
RT
SS
11
12
13
14
15
16
REF
HD
LD
PUSH
PULL
AGND
TIME
FEED
BACK
LM5102
PUSH
PULL
33 - 76V
VOUT
HI
VIN
LM5041
VCC
HD
LD
FB
VDD
HB
LO
VSS
RT1
RT
2
LI
RT2
HO
HS
LM5041
SNVS248C – MAY 2004 – REVISED MAY 2004
www.ti.com
Typical Application Circuit
Figure 1. Simplified Cascaded Push-Pull Power Converter
Connection Diagram
Figure 2. 16-Lead TSSOP, LLP
Pin Functions
Pin Description
PIN
NAME
DESCRIPTION
APPLICATION INFORMATION
1
VIN
Source Input Voltage
Input to start-up regulator. Input range 15V to 100V.
2
FB
Feedback Signal
Inverting input for the internal error amplifier. The non-
inverting input is connected to a 0.75V reference.
3
COMP
Output of the Internal Error Amplifier
There is an internal 5k
Ω resistor pull-up on this pin. The
error amplifier provides an active sink.
4
REF
Precision 5 volt reference output
Maximum output current: 10mA. Locally decouple with a
0.1µF capacitor. Reference stays low until the line UV and
the VCC UV are satisfied.
5
HD
Main Buck PWM control output
Buck switch PWM control output. The maximum duty cycle
clamp for this output corresponds to an off time of typically
240ns per cycle. The LM5101 or LM5102 Buck stage gate
driver can be used to level shift and drive the Buck switch.
2
Submit Documentation Feedback
Copyright © 2004, Texas Instruments Incorporated
Product Folder Links: LM5041



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