BD9111NV View Datasheet(PDF) - ROHM Semiconductor
Part Name
Description
Manufacturer
BD9111NV Datasheet PDF : 14 Pages
| |||
BD9111NV
Technical Note
●Electrical Characteristics (Ta=25℃, VCC=PVCC=3.3V, EN=VCC.)
Parameter
Symbol
Min.
Limits
Typ.
Standby current
ISTB
-
0
Bias current
ICC
-
250
EN Low voltage
VENL
-
GND
EN High voltage
VENH
2.0
VCC
EN input current
IEN
-
1
Oscillation frequency
FOSC
0.8
1
Pch FET ON resistance
RONP
-
200
Nch FET ON resistance
RONN
-
150
Output voltage
VOUT
3.250
3.300
ITH SInk current
ITHSI
10
20
ITH Source Current
ITHSO
10
20
UVLO threshold voltage
VUVLO1
3.6
3.8
UVLO release voltage
VUVLO2
3.65
3.90
Soft start time
TSS
0.5
1
Timer latch time
TLATCH
1
2
Output Short circuit Threshold Voltage VSCP
-
1.65
Max.
10
450
0.8
-
10
1.2
320
270
3.350
-
-
4.0
4.2
2
3
2.31
Unit
Conditions
μA EN=GND
μA
V Standby mode
V Active mode
μA VEN=5V
MHz
mΩ PVCC=5V
mΩ PVCC=5V
V
μA VOUT=3.6V
μA VOUT=3.0V
V VCC=5→0V
V VCC=0→5V
ms
ms SCP/TSD operated
VOUT VOUT=3.3→0V
●Block Diagram, Application Circuit
VOUT1
VCC 2
ITH 3
GND 4
TOP View
8 EN
7 PVCC
6 SW
5 PGND
Fig.1 BD9111NV TOP View
VCC
EN
8
VREF
Gm Amp.
Current
Comp
RQ
S
SLOPE
C LK
OSC
VCC
Current
Sense/
Protect
+
Driver
Logic
Soft
Start
UVLO
TSD
SCP
1
VOUT
3
ITH
R ITH C ITH
Fig.2 BD9111NV Block Diagram
2 VCC
7
PVCC
5V
Input
22µF
2.2µH
6
SW
22µF
Output
5
PGND
4
GND
●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)
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/13
2010.04 - Rev.B
|
|
Share Link: 