BD9111NV_09 Datasheet, PDF (2/14 Pages) Rohm – Output 2A or More High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9111NV
●Electrical Characteristics
◎BD9111NV (Ta=25℃, VCC=PVCC=3.3V, EN=VCC.)
Parameter
Symbol
Standby current
ISTB
Bias current
ICC
EN Low voltage
VENL
EN High voltage
VENH
EN input current
IEN
Oscillation frequency
FOSC
Pch FET ON resistance
RONP
Nch FET ON resistance
RONN
Output voltage
VOUT
ITH SInk current
ITHSI
ITH Source Current
ITHSO
UVLO threshold voltage
VUVLO1
UVLO release voltage
VUVLO2
Soft start time
TSS
Timer latch time
TLATCH
Output Short circuit Threshold Voltage VSCP
Min.
-
-
-
2.0
-
0.8
-
-
3.250
10
10
3.6
3.65
0.5
1
-
Typ.
0
250
GND
VCC
1
1
200
150
3.300
20
20
3.8
3.90
1
2
1.65
Technical Note
Max.
10
450
0.8
-
10
1.2
320
270
3.350
-
-
4.0
4.2
2
3
2.31
Unit
μA
μA
V
V
μA
MHz
mΩ
mΩ
V
μA
μA
V
V
ms
ms
V_OUT
Conditions
EN=GND
Standby mode
Active mode
VEN=5V
PVCC=5V
PVCC=5V
VOUT=3.6V
VOUT=3.0V
VCC=5→0V
VCC=0→5V
SCP/TSD operated
V_OUT=3.3→0V
●Block Diagram, Application Circuit
VOUT1
VCC 2
ITH 3
GND 4
8 EN
7 PVCC
6 SW
5 PGND
TOP View
Fig.1 BD9111NV TOP View
VCC
EN
8
VREF
Gm Amp.
Soft
Start
Current
Comp
RQ
S
SLOPE
CLK
OSC
VCC
UVLO
TSD
SCP
Current
Sense/
Protect
+
Driver
Logic
1
VOUT
3
ITH
RITH CITH
2 ^VCC
7
PVCC
5V
Input
22µF
2.2µH
6
SW
22µF
Output
5
PGND
4
GND
Fig.2 BD9111NV Block Diagram
●Pin number and function
Pin No.
1
2
3
4
5
6
7
8
Pin name
VOUT
VCC
ITH
GND
PGND
SW
PVCC
EN
PIN function
Output voltage pin
VCC power supply input pin
GmAmp output pin/Connected phase compensation capacitor
Ground
Nch FET source pin
Pch/Nch FET drain output pin
Pch FET source pin
Enable pin(Active High)
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2009.05 - Rev.A