Datasheet

FB
SW
RT
V
IN
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
LM25005
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
V
CC
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 ± 42V
V
IN
V
IN
1.75V
PWM
C_LIMIT
10 PA
5 PA
V
IN
TRACK
SAMPLE
and
HOLD
0.5V/A
RAMP GENERATOR
Ir = (5 PA x (V
IN
± V
OUT
))
+ 25 PA
LM25005
SNVS411C –JANUARY 2006–REVISED MARCH 2013 www.ti.com
Typical Application Circuit and Block Diagram
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Product Folder Links: LM25005