BD9540EFV Datasheet, PDF (4/18 Pages) Rohm – 2ch Switching Regulators for Desktop PC

BD9540EFV
●Pin Function
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
reverse
Technical Note
PIN name
BOOT1
NC
EN1
VOUT1
FB1
NC
GND
CTL1
CTL2
FB2
VOUT2
EN2
NC
BOOT2
HG2
SW2
LG2
PGND2
ILIM2
TEST
VCC
5VReg
VIN
ILIM1
PGND1
LG1
SW1
HG1
FIN
PIN Function
HG Driver Power Supply Pin 1
Non connection Pin
Enable Input Pin 1 (0～0.3V:OFF, 2.2～20V:ON)
Output Voltage Sence Pin 1
Output Voltage Feedback Pin 1
Non connection Pin
Sense GND
1ch Reference Voltage Setting Control Pin 1:See P12/17
1ch Reference Voltage Setting Control Pin 2:See P12/17
Output Voltage Feedback Pin 2
Output Voltage Sense Pin 2
Enable Input Pin 2 (0～0.3V:OFF, 2.2～20V:ON)
Non connection Pin
HG Driver Power Supply Pin 2
High side FET Gate Driver Pin 2
High side FET Source Pin 2
Low side FET Gate Driver Pin 2
Power GND for 2ch
2ch OCP Setting Pin
Connect to GND Pin
Power Supply Input Pin
Reference Voltage Inside IC (5V Voltage Output)
Battery Voltage Sense Pin
1ch OCP Setting Pin
Power GND for 1ch
Low side FET Gate Driver Pin 1
High side FET Source Pin 1
High side FET Gate Driver Pin 1
Exposed Pad, Connect to GND
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4/17
2009.04 - Rev.B