Datasheet
LMZ1420xH
Board
VIN
GND
INPUT
SUPPLY
V+
GND
L
C
TT5 Vo
TT1 GND
TT2 GND
TT3 GND
TT4 GND
ENABLE OPT
VIN_S+
GND
VOUT_S+
A
D
B
C
E
F
K
H
J
L
1
2
3
4
5
6
7
8
9
10
EC1
GND
VIN/VOUT_S-
GND
GND
GND
TT10 VIN
GND
4
SS
5
FB
6
VOUT
7
EN
3
RON
2
VIN
1
EP
8
U1
GND
4700 pF
Css
0.022 uFCff
Cin5
DNS
10 uF
Cin2
10 uF
Cin3
DNS
1 uF
Cin4
1 uF
Co8
VIN
VOUT
VOUT
VIN
VIN
VOUT
11.8k
Renb
UVLO AT
13.5V
249k
Ron
2.43k
Rfbb
34k
Rfbt
TT7 EN
1 uF
Co1
TP1 TP2
10 uF
Cin1
124k
Rent
DNS
DNS
5.1V
12
D1
DNS
47 uF
Co2
DNS
47 uF
Co3
47 uF
Co3
DNS
47 uF
Co3
DNS
22 uF
Co4
DNS
22
uF
Co5
DNS
PCB Schematic
www.ti.com
6 PCB Schematic
Figure 6. Detailed Schematic
DNS = Component not installed
Figure 7. Conducted EMI LC Filter Configuration
10
AN-2089 LMZ14203H/02H/01H Evaluation Board SNVA459A–January 2011–Revised April 2013
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