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BD8966FVM Datasheet(PDF) 2 Page - Rohm

Part # BD8966FVM
Description  Low Noise High Efficiency Step-down Switching Regulator with Built-in Power MOSFET
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD8966FVM Datasheet(HTML) 2 Page - Rohm

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BD8966FVM
Technical Note
2/14
www.rohm.com
2010.04 - Rev.B
© 2010 ROHM Co., Ltd. All rights reserved.
●
Electrical characteristics
◎
(Ta=25℃, VCC=5V, EN=VCC, R1=20kΩ, R2=10kΩ unless otherwise specified.)
Parameter
Symbol
Limits
Unit
Conditions
Min.
Typ.
Max.
Standby current
ISTB
-
0
10
µA
EN=GND
Bias current
ICC
-
250
450
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=5V
Oscillation frequency
FOSC
0.8
1
1.2
MHz
Pch FET ON resistance
RONP
-
350
600
mΩ
PVCC=5V
Nch FET ON resistance
RONN
-
250
500
mΩ
PVCC=5V
ADJ voltage
VADJ
0.78
0.80
0.82
V
ITH SInk current
ITHSI
10
20
-
µA
VADJ=H
ITH Source Current
ITHSO
10
20
-
µA
VADJ=L
UVLO threshold voltage
VUVLO1
3.20
3.40
3.6
V
VCC=4→0V
UVLO release voltage
VUVLO2
3.25
3.50
3.80
V
VCC=0→4V
Soft start time
TSS
1.5
3
6
ms
VADJ=H
Timer latch time
TLATCH
0.5
2
3
ms
SCP/TSD operated
●
Block diagram, Application circuit
●
Pin No. & function table
Pin No.
Pin name
PIN function
1
ADJ
Output voltage detect pin
2
ITH
GmAmp output pin/Connected phase compensation capacitor
3
EN
Enable pin(Active High)
4
GND
Ground
5
PGND
Nch FET source pin
6
SW
Pch/Nch FET drain output pin
7
PVCC
Pch FET source pin
8
VCC
VCC power supply input pin
Fig.1 BD8966FVM View
Fig.2 BD8966FVM Block Diagram
4
1
5
8
0.475
0.65
2.9
±0.1
0.08 S
0.145
0.22
+0.05
-0.04
+0.05
-0.03
S
4
+6
-4
Max3.25(include.BURR)
D 8 9
6
6
Lot No.
1PIN MARK
VREF
OSC
UVLO
TSD
Current
Sense/
Protect
Driver
Logic
+
Soft
Start
8
7
6
5
4
2
1
3
R Q
S
EN
VCC
PVCC
Input
SW
Output
PGND
GND
ITH
ADJ
VCC
SLOPE
Current
Comp.
Gm Amp.
CLK
VCC


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