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LM5576 Datasheet(PDF) 7 Page - Texas Instruments

Part # LM5576
Description  LM5576Q0 SIMPLE SWITCHER® 75V, 3A Step-Down Switching Regulator
PDF  29 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM5576 Datasheet(HTML) 7 Page - Texas Instruments

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background image
FB
SW
RT
VIN
BST
SD
5V
S
R
Q
Q
AGND
IS
CLK
+
SS
PRE
3, 4
2
11
7
6
5
8
9
12
10
13, 14
1
SD
Ir
LM5576
SHUTDOWN
STANDBY
7V
REGULATOR
SYNC
SYNC
OSCILLATOR
RAMP
OUT
PGND
CLK
CLK
COMP
ERROR
AMP
R3
21k
C3
330p
C11
330p
R7
10
C9
22
C10
150
R6
1.65k
R5
5.11k
L1
33 PH
C7
0.022
C8
0.47
D1
CSHD6-100C
15, 16
19
17, 18
20
THERMAL
SHUTDOWN
UVLO
UVLO
CLK
DIS
VCC
LEVEL
SHIFT
DRIVER
1.225V
1.225V
0.7V
0.7V
R4
49.9k
C5
0.01
C6
open
R2
OPEN
C12
OPEN
C4
0.01
C2
2.2
C1
2.2
R1
OPEN
7V ± 75V
VIN
VIN
2.1V
PWM
C_LIMIT
10 PA
5 PA
VIN
TRACK
SAMPLE
and
HOLD
0.5V/A
RAMP GENERATOR
Ir = (5 PA x (VIN ± VOUT))
+ 25 PA
10k
100k
1M
10M
100M
FREQUENCY (Hz)
-30
-20
-10
0
10
20
30
40
50
-135
-90
-45
0
45
90
135
180
225
GAIN
PHASE
0.5
1
1.5
2
2.5
3
0
10
20
30
40
50
60
70
80
90
100
IOUT (A)
VIN = 24V
VIN = 48V
VIN = 75V
VIN = 7V
LM5576Q0
www.ti.com
SNOSB24B – OCTOBER 2008 – REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Error Amplifier Gain/Phase
AVCL = 101
Demoboard Efficiency vs IOUT and VIN
Figure 7.
Figure 8.
TYPICAL APPLICATION CIRCUIT AND BLOCK DIAGRAM
Figure 9.
Copyright © 2008–2013, Texas Instruments Incorporated
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Product Folder Links: LM5576Q0



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