bd9351mwv ROHM Co. Ltd., bd9351mwv Datasheet - Page 3

• Manufacturer Part Number: bd9351mwv
• Description: 7-channel Switching Regulator Controller For Digital Camera
• Manufacturer: ROHM Co. Ltd.

○Pin Assignment ・Block Diagram
○Package
B D 9 3 5 1 M W
PGND567
HS67H
UPIC7
NON5
INV7I
HS6L
HS7L
INV6
INV7
Lx7
Lx6
LOT No.
Fig. 2
34
35
36
37
38
39
40
41
42
43
44
REF
0V
REF
1.0V
REF
1.0V
-
+
-
+
-
+
-
+
OCP
OCP
PRE
DRIVER
PRE
DRIVER
VREF
1.0V
33
1
2.5V
REG
DAC
32
TSD
2
PRE
DRIVER
31
3
30
PRE DRIVER
4
UVLO
LOGIC BLOCK
CHARGE PUMP
REV. A
29
5
PWM &
28
6
PRE DRIVER
27
7
○Pin Description
26
8
OSC
25
9
24
SCP
10
23
11
PGND13,2,4,567
INV1,2,3,4,6,7
STB124,3,56
HS6L,HS7L
Pin Name
OCP
UDSEL4
CPOUT
Lx1, 3, 4, 6, 7
VREGA
PVCC5
Hx1,3,4
UPIC7
OUT5
VOUT2
NON5
-
+
-
+
-
+
-
+
VREF
INV7I
VBAT
GND
HS67H
SCP
C+H
C+L
VIN
Lx21
Lx22
Hx2
RT
REF
0.8V
REF
0.8V
REF
0.8V
REF
0.8V
B.G.CTL
22
21
20
19
18
17
16
15
14
13
12
INV3
INV2
INV4
Hx4
Lx4
PGND4
Hx2
Lx21
PGND2
Lx22
VOUT2
Fig. 1
Input for battery voltage
Returning voltage from output terminal
Output terminal for Charge Pump
Ground terminal
Terminal for connecting flying capacitor for Charge
Pump(H side)
Terminal for connecting flying capacitor for Charge
Pump(L side)
Ground terminal for internal FET
VREGA output
CH5 base bias voltage
CH5 PMOS VCC input for driver
Terminal for connecting gate of CH5 PMOS
Input terminal for synchronous
High side switch, Power supply for Pch Driver
Terminal for connecting inductors
Power supply for channel 2
Terminal for connecting inductor for CH2 input
Terminal for connecting inductor for CH2 output
CH2 output voltage
Power supply for internal load switch
Output terminal for internal load switch
Error AMP inverted input
Error AMP non-inverted input
Error AMP inverted input
For connecting a resistor
to set the OSC frequency
For connecting a capacitor
to set up the delay time of the SCP
Step-up/down switching mode
selection(H: step-down, L:step-up)
ON/OFF switch H: operating over 1.5V
ON/OFF switch for CH7 brightness control
Description
3/4