BD9150MUV Datasheet, PDF (3/19 Pages) Rohm – Output 1.5A or Less High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9150MUV
●Block Diagram, Application Circuit
【BD9150MUV】
4.0±0.1
D9150
Lot No.
S
0.08 S
C0.2 ^2.1±0.1
1
5
20
6
16
15
1.0
0.5
10
11
0.25^+-00..0045
(Unit : mm)
Fig.1 BD9150MUV TOP View
Technical Note
AVCC
FB1
EN1
ITH1
FB2
EN2
ITH2
Gm Amp
Current
Comp
RQ
S
Slope1
AGND ^Soft
Start1
SCP1
VREF
CLK1
OSC
SCP/
TSD
CLK2
SCP2
Gm Amp
Current
Comp
RQ
S
Slope2
Soft
Start2
CLK2
Current
Sense/
Protect
+
Driver
Logic
UVLO
Current
Sense/
Protect
+
Driver
Logic
PVCC
SW1
PGND1
PVCC
SW2
PGND2
AGND
Fig.2 BD9150MUV Block Diagram
●Pin No. & function table
Pin
Pin
No. name
Function
1 PGND2 Ch2 Lowside source pin
2
PVcc Highside FET source pin
3
PVcc Highside FET source pin
4
PVcc Highside FET source pin
5 PGND1 Ch1 Lowside source pin
6 PGND1 Ch1 Lowside source pin
7
SW1 Ch1 Pch/Nch FET drain output pin
8
SW1 Ch1 Pch/Nch FET drain output pin
9
EN1 Ch1 Enable pin(High Active)
10
FB1 Ch1 output voltage detect pin
Pin
Pin
No. name
Function
Ch1 GmAmp output pin/Connected
11
ITH1
phase compensation capacitor
12 AGND Ground
13
N.C. Non Connection
14
AVcc VCC power supply input pin
Ch1 GmAmp output pin/Connected
15
ITH2
phase compensation capacitor
16
FB2 Ch2 output voltage detect pin
17
EN2 Ch2 Enable pin(High Active）
18
SW2 Ch2 Pch/Nch FET drain output pin
19
SW2 Ch2 Pch/Nch FET drain output pin
20 PGND2 Ch2 Lowside source pin
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2009.05 - Rev.A