ncp3121 ON Semiconductor, ncp3121 Datasheet - Page 37

• Manufacturer Part Number: ncp3121
• Description: Dual 3.0 A, Step-down Dc/dc Switching Regulator
• Manufacturer: ON Semiconductor

Typical Application Circuit
Disable
Disable
Enable
Enable
EN1
EN2
PG1
PG2
75k
R1
3.3k
R26
R16
5.1k
PG1
PG2
EN1
SEQ1
EN2
SEQ2
TRACK1
TRACK2
100n
C3
Figure 67. Typical Circuit Diagram
NCP3121
4.7k
R23
C23
22n
C13
22n
R13
4.7k
http://onsemi.com
GND
100n
C22
C12
100n
NCP3121
C25
NU
GND
C15
NU
37
SW1
SW2
RVIN
VIN
VIN
VIN
VIN
VIN
VIN
100
GND
GND
22u
C1
MBRS340
MBRS340
L21
GND GND
D11
D21
GND
22u
L11
22u
VIN
100n
C2
C24
220p
R24
100
R14
C14
100
220p
R12
R21
R22
R11
68k
13k
47k
15k
GND
GND
GND
GND
OUT1
2A @ 5V
OUT2
2A @ 5V
22u
22u
C11
C21