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LM5025CMTC/NOPB Datasheet(PDF) 4 Page - Texas Instruments

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Part # LM5025CMTC/NOPB
Description  LM5025C Active Clamp Voltage Mode PWM Controller
PDF  22 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM5025CMTC/NOPB Datasheet(HTML) 4 Page - Texas Instruments

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LOGIC
VIN
REF
SS
90 PA
RT
LOGIC
PGND
AGND
5V
REFERENCE
OSCILLATOR
CLK
CS1
TIME
0.5V
0.5V
PWM
5k
5V
1V
R
S
Q
Q
SS
FF RAMP
CS2
RAMP
SLOPE D TO VIN
CLK + LEB
7.6V SERIES
REGULATOR
OUT_B
DRIVER
VCC
COMP
SS
SS Amp
(Sink Only)
MAX V*S
CLAMP
SYNC
UVLO
HYSTERESIS
(20 PA)
2.5V
+
-
UVLO
+
-
OUT_A
DRIVER
VCC
VCC
VCC
UVLO
2.5V
89 PA
DEADTIME
OR
OVERLAP
CONTROL
+
-
+
-
+
-
ENABLE
OUTPUTS
LM5025C
SNVS568C – SEPTEMBER 2008 – REVISED MARCH 2013
www.ti.com
PIN DESCRIPTIONS (continued)
Pin
Name
Description
Application Information
15
SYNC
Oscillator UP/DOWN synchronization input
The internal oscillator can be synchronized to an external
clock with a frequency 20% lower than the internal
oscillator’s free running frequency. There is no constraint
on the maximum sync frequency.
16
UVLO
Line Under-Voltage shutdown
An external voltage divider from the power source sets the
shutdown comparator levels. The comparator threshold is
2.5V. Hysteresis is set by an internal current source (20
µA) that is switched on or off as the UVLO pin potential
crosses the 2.5V threshold.
Block Diagram
4
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Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: LM5025C



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