BD8961NV ROHM Co. Ltd., BD8961NV Datasheet - Page 2

• Manufacturer Part Number: BD8961NV
• Description: Low Noise Step-down Switching Regulator
• Manufacturer: ROHM Co. Ltd.

●Electrical Characteristics
●Block Diagram, Application Circuit
●Pin No. & function table
◎BD8961NV (Ta=25℃, V
Standby current
Bias current
EN Low voltage
EN High voltage
EN input current
Oscillation frequency
Pch FET ON resistance
Nch FET ON resistance
Output voltage
ITH
ITH
UVLO threshold voltage
UVLO release voltage
Soft start time
Timer latch time
Output Short circuit
【BD8961NV】
Threshold Voltage
No.
Pin
SI
S
1
2
3
4
5
6
7
8
ource
nk current
Fig.1 BD8961NV TOP View
Parameter
C
urrent
Pin name
PGND
VOUT
PV
GND
V
ITH
SW
EN
D8961
CC
CC
CC
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)
=PV
Lot No.
CC
Symbol
=3.3V, EN=V
V
V
T
R
R
I
V
F
V
V
V
I
UVLO1
UVLO2
I
THSO
LATCH
T
I
THSI
I
STB
OSC
ONN
ENH
ONP
OUT
SCP
CC
ENL
EN
SS
CC
3.250
Min.
3.65
.)
2.0
0.8
3.6
0.5
10
10
1
-
-
-
-
-
-
-
PIN function
BD8961NV
1
VOUT
2/15
EN
Gm Amp.
VREF
3.300
GND
Typ.
3.90
1.65
V
250
200
150
Start
8
3.8
Soft
20
20
0
CC
1
1
1
2
3
R
ITH
ITH
SLOPE
V
UVLO
C
CC
SCP
3.350
TSD
Max.
2.31
V
450
320
270
ITH
0.8
1.2
4.0
4.2
Current
Comp
10
10
Fig.2 BD8961NV Block Diagram
CC
2
3
-
-
-
OSC
CLK
R
S
Q
MHz
V
Unit
mΩ
mΩ
μA
μA
μA
μA
μA
ms
ms
OUT
V
V
V
V
V
Current
Protect
Sense/
Driver
Logic
+
EN=GND
Standby mode
Active mode
V
P
P
V
V
V
V
V
SCP/TSD operated
EN
VCC
VCC
OUT
OUT
CC
CC
OUT
=5V
=5→0V
=0→5V
=3.3→0V
=5V
=5V
=3.6V
=3.0V
Conditions
2
7
6
5
4
PV
SW
V
PGND
GND
CC
CC
Input
Output