BD9528AMUV Datasheet, PDF (6/30 Pages) Rohm – High Performance Regulators for PCs Main Power Supply for Notebook PCs(With Built-in Linear Regulator)

BD9528AMUV
Technical Note
●Pin Configuration
PGND1 ₂₅
LG1 ₂₆
Vo1 ₂₇
REG2 ₂₈
REG1 ₂₉
VIN ₃₀
LG2 ₃₁
PGND2 ₃₂
24 23 22 21 20 19 18 17
FIN
16 ^MCTL2
15 ^FS1
14 ^FB1
13 ^AGND
12 ^REF
11 ^FB2
10 ^FS2
9 ^CTL
12345678
Input
MCTL1
MCTL2
Low
Low
Low
High
High
Low
High
High
Control Mode
SLLM
QLLM
Forced Continuous Mode
Forced Continuous Mode
※ MCTL pin is connected to AGND pin with 500kΩ resistor ( pull down) internal IC
●Pin Function Table
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
29
30
31
32
reverse
PIN name
SW2
HG2
BOOT2
EN2
PGOOD2
SS2
Vo2
ILIM2
CTL
FS2
FB2
REF
AGND
FB1
FS1
MCTL2
ILIM1
MCTL1
SS1
PGOOD1
EN1
BOOT1
HG1
SW1
PGND1
LG1
Vo1
REG2
REG1
VIN
LG2
PGND2
FIN
PIN Function
Highside FET source pin 2
Highside FET gate drive pin 2
HG Driver power supply pin 2
Vo2 ON/OFF pin (High=ON, Low,OPEN=OFF)
Vo2 Power Good Open Drain Output pin
Vo2 Soft start pin
Vo2 Output voltage sense pin
OCP setting pin 2
Linear regulator ON/OFF pin (High,OPEN=ON, Low=OFF)
Input pin for setting Vo2 frequency
Vo2 output voltage feedback pin
Output voltage setting pin
Input pin Ground
Vo1 output voltage feedback pin
Input pin for setting Vo1 frequency
Mode switch pin 2 ( OPEN = L )
OCP setting pin 1
Mode switch pin 1 ( OPEN = L )
Vo1 Soft start pin
Vo1 Power Good Open Drain Output pin
Vo1 ON/OFF pin
(High=ON, Low,OPEN=OFF)
HG Driver power supply pin
Highside FET gate drive pin 1
Highside FET source pin 1
Lowside FET source pin 1
Lowside FET gate drive pin 1
Vo1 Output voltage sense pin
3.3V Linear regulator output pin
5V Linear regulator output pin
Power supply input pin
Lowside FET gate drive pin 2
Lowside FET source pin 2
Exposed Pad1, connect to GND
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2011.11 - Rev.A