Texas Instruments LM3423 Evaluation Board LM3423BBLSCSEV/NOPB LM3423BBLSCSEV/NOPB Datenbogen
Produktcode
LM3423BBLSCSEV/NOPB
R
LIM
Q1
R
OV1
C
OV
15V
±
50V
PWM
C
O
D1
R
OV2
1.25A
I
I
LED
R
SNS
R
FS
C
FS
Q2
D2
L1
Q4
R
PU
C
DIM
OVP
nDIM
LM3423
AGND
V
IN
PGND
DDRV
DAP
GATE
EN
COMP
VIN
CSH
RCT
IS
HSP
RPD
VCC
HSN
C
BYP
C
CMP
R
T
R
UV2
R
UV1
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
R
HSN
R
HSP
Q3
C
T
C
IN
FLT
DPOL
9
12
TIMR
LRDY
10
11
R
CSH
R
UVH
V
IN
LED
STATUS
LIGHT
R
PU2
RPD
RPD
External
Enable
SNVS574E – JULY 2008 – REVISED MAY 2013
DESIGN #6 - LM3423 BUCK Application
Features
•
Input: 15V to 50V
•
Output: 3 LEDs at 1.25A
•
PWM Dimming up to 50 kHz
•
LED Status Indicator
•
Zero Current Shutdown
•
700 kHz Switching Frequency
54
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