ncp3122 ON Semiconductor, ncp3122 Datasheet - Page 29

• Manufacturer Part Number: ncp3122
• Description: Dual 2.0 A, Step-down Dc/dc Switching Regulator
• Manufacturer: ON Semiconductor

Mixed Mode A (Sequencing & Tracking)
various combinations of power sequencing. Mixed mode A
demonstrates the configuration of tracking and sequencing
The different modes can also be used together to achieve
VOUT1
VOUT2
VOUT3
VOUT4
Disable
Enable
Figure 58. Mixed Mode, Configuration A
R10
R21
R18
R9
PG1
PG2
EN1
SEQ1
EN2
SEQ2
TRACK1
TRACK2
PG1
PG2
EN1
SEQ1
EN2
SEQ2
TRACK1
TRACK2
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GND
GND
C13
C16
NCP3122
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NCP3122
NCP3122
for four outputs. The schematic and typical output behavior
is shown in Figure 58. Mixed mode B shows the
combination of tracking, sequencing and normal mode.
R16
C3
R8
R7
C4
C1
R17
C2
GND
GND
C5
C6
GND
GND
SW1
SW2
SW1
SW2
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
R11
R22
C9
C14
GND GND
GND GND
D2
GND
D3
GND
D1
D4
GND
GND
GND
GND
L2
L4
C10
C15
L1
L3
VIN
R13
R12
R14
R15
R1
R2
R3
R4
GND
GND
GND
GND
GND
GND
C7
C11
C8
C12
GND
GND
R5
R6
R19
R20
GND
GND
OUT1
OUT2
OUT1
OUT2