bd9745ekn ROHM Co. Ltd., bd9745ekn Datasheet - Page 6

• Manufacturer Part Number: bd9745ekn
• Description: 7-channel Switching Regulator Controller For Digital Camera
• Manufacturer: ROHM Co. Ltd.

○PIN DESCRIPTION
13,12,11,10,48,47,39
26,25,27,28,36,38
15-16,19,8,5,44
17-18,6-7,43
PIN No.
14,20,9,4
23,24,3
46,40
45,41
22
31
21
33
30
34
42
35
37
29
32
2
1
PGND12,34,567
STB1,2,3,4,5,6,7
INV1,2,3,4,6,7
HS6L, HS7L
UDSEL1,2,4
HS6H, HS7H
Hx1,2,3,4
Lx1, 2 , 3 , 4 , 6
PVCC5
VREGA
NAME
PVCC
VBAT
NON5
VREF
OUT5
OUT7
INV7I
VCC
GND
SCP
RT
I / O
O
O
O
O
O
O
O
-
-
-
-
-
-
-
-
I
I
I
I
I
I
Power supply for the start-up circuit
Power supply
Power supply for Nch Driver
Power supply for CH5 Pch Driver.
Ground
Power Ground for the Built-in FET.
Output of REGA
Output of CH5 Reference.
Connect to the Gate of CH5 external
Pch FET.
Connect to the Gate of CH7 external
Nch FET.
Power supply for Built-in Pch FET.
Connect to the inductor.
Power supply for Built-in High side-SW.
Output of Built-in High side-SW.
Error AMP inverted input.
Error AMP non-inverted input.
Error AMP inverted input.
A resistor is placed to set the OSC
frequency.
Connect to a capacitor to set up
the delay time of the SCP.
Step-up/down switching mode
selection H: step-down
ON/OFF SW H: Operating Over 1.5V
REV. D
Description
L: step-up
Drive over 1.5V
Drive over 2.5V
Drive over 2.5V
Output
Voltage=2.5V
Output
Voltage=1.0V
For Current Feed Back
Output Voltage=1.0V
CLK frequency 1.2MHz
connecting 62kΩ to GND.
Charge up current
4μA until 1.0V.
All Low; Stand-by
NOTES
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