BD9132MUV Datasheet, PDF (2/17 Pages) Rohm – Output 2A or More High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

●Electrical Characteristics
◎BD9132MUV (Ta=25℃ VCC=PVCC=3.3V, EN=VCC, R₁=10kΩ, R₂=5kΩ, unless otherwise specified.)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Standby current
ISTB
-
0
10
μA
EN=GND
Active current
ICC
-
250
500
μA
EN Low voltage
VENL
-
GND
0.8
V
Standby mode
EN High voltage
VENH
2.0
Vcc
-
V
Active mode
EN input current
IEN
-
1
10
μA
VEN=3.3V
Oscillation frequency
FOSC
0.8
1
1.2
MHz
High side FET ON resistance
RONH
-
82
115
mΩ
PVCC=3.3V
Low side FET ON resistance
RONL
-
70
98
mΩ
PVCC=3.3V
ADJ Voltage
VADJ
0.788
0.800
0.812
V
ITH SInk current
ITHSI
10
18
-
μA
VADJ=1V
ITH Source Current
ITHSO
10
18
-
μA
VADJ=0.6V
UVLO threshold voltage
VUVLO1
2.400
2.500
2.600
V
VCC=3.3V→0V
UVLO release voltage
VUVLO2
2.425
2.550
2.700
V
VCC=0V→3.3V
Soft start time
TSS
2.5
5
10
ms
Timer latch time
TLATCH
0.5
1
2
ms
Output Short circuit
Threshold Voltage
VSCP
-
0.40
0.56
V
VADJ =0.8V→0V
●Block Diagram, Application Circuit
【BD9132MUV】
4.0±0.1
D9132
Lot No.
S
0.08 S
C0.2 ^2.1±0.1
1
5
20
6
VCC
EN
VREF
Gm Amp
+
Soft
Start
Current
Comp
+
RQ
S
SLOPE
CLK
OSC
VCC
UVLO
TSD
SCP
Current
Sense/
Protect
+
Driver
Logic
VCC
BST
PVCC
3.3V
Input
SW
PVCC
PGND
GND
Output
16
15
1.0
0.5
10
11
0.25^+-00..0045
(Unit : mm)
ADJ
ITH
RITH _CITH
R1 R2
Fig.2 BD9132MUV Block Diagram
Fig.1 BD9132MUV TOP View
●Pin No. & function table
Pin
Pin
No. name
1
SW SW pin
2
SW SW pin
Function
3
SW SW pin
4
SW SW pin
5
SW SW pin
6 PVCC Highside FET source pin
7 PVCC Highside FET source pin
8 PVCC Highside FET source pin
9
BST Bootstrapped voltage input pin
10 VCC VCC power supply input pin
Pin
No.
11
12
13
14
15
16
17
18
19
20
2/16
Pin
name
GND
ADJ
ITH
N.C.
N.C.
N.C.
EN
PGND
PGND
PGND
Function
Ground
Output voltage detect pin
GmAmp output pin/Connected phase
compensation capacitor
Non Connection
Non Connection
Non Connection
Enable pin(High Active）
Lowside FET source pin
Lowside source pin
Lowside source pin