L5953_07 STMICROELECTRONICS [STMicroelectronics], L5953_07 Datasheet - Page 25

• Manufacturer Part Number: L5953_07
• Description: Multiple switching voltage regulator
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L5953
6
Application note
Figure 20. Block and application diagram
Figure 21. Block diagram and application with external power MOS
HSD1
HSD2
VSPI
HSD1
HSD2
IRQ
VSPI
IRQ
S1
S1
Q
Q
VOLTAGE WARNING
VOLTAGE WARNING
SPI INTERFACE
SPI INTERFACE
W1
W1
HSD1
D
HSD1
D
S2
S2
S
S
HSD2
HSD2
W2
W2
C
C
VDD
VDD
C10
C10
VLR
VLR
VDD-LIN
LINEAR VOLTAGE
VDD-LIN
LINEAR VOLTAGE
1.5-3.3V/300mA
FBLR
C2
C1
1.5-3.3V/300mA
REGULATOR
FBLR
R5
C2
C1
REGULATOR
R5
REG2
REG2
R6
VDD-SW
C5
R6
VDD-SW
C5
VIN
VIN
D1
D1
OSCILLATOR &
ST-BY LINEAR VOLTAGE
OSCILLATOR &
STEP DOWN
REGULATOR
ST-BY LINEAR VOLTAGE
STCAP
2.5-10V/1A
SYNC
SYNC
STEP DOWN
REGULATOR
C3
STCAP
3.3-5V/250mA
2.5-10V/1A
REGULATOR
PWM
SYNC
SYNC
C3
3.3-5V/250mA
REGULATOR
PWM
REG1
REG1
CT
DGND
DGND
C11
CT
RES
RES
D01AU1332B
D01AU1331B
FGND
VSTBY
ADJ
STRAP
DRAINOUT
VSW
GATEIN
GATEOUT
FB
COMP
SWGND
GND
FGND
VSTBY
ADJ
STRAP
DRAINOUT
VSW
GATEIN
GATEOUT
FB
COMP
SWGND
GND
R4
R4
M1
D2
C4
C6
C9
Application note
C4
D2
C6
C9
L1
L1
R1
R2
R1
R2
C8
C8
R3
R3
25/31
C7
C7
Vo
Vo