BD8966FVM-TR Rohm Semiconductor, BD8966FVM-TR Datasheet - Page 12

• Manufacturer Part Number: BD8966FVM-TR
• Description: IC SWITCHING REG W/MOSFET MSOP8
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of BD8966FVM-TR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1 V ~ 2.5 V
• Current - Output: 800mA
• Frequency - Switching: 1MHz
• Voltage - Input: 4 V ~ 5.5 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●BD8966FVM Cautions on PC Board layout
●Recommended Components Lists on Above Application
●I/O equivalence circuit
© 2010 ROHM Co., Ltd. All rights reserved.
BD8966FVM
www.rohm.com
① For the sections drawn with heavy line, use thick conductor pattern as short as possible.
② Lay out the input ceramic capacitor CIN closer to the pins PVCC and PGND, and the output capacitor Co closer to the
③ Lay out CITH and RITH between the pins ITH and GND as near as possible with least necessary wiring.
Symbol
*
C
R
C
・ADJ pin
C
L
ITH
ITH
・EN pin
pin PGND.
IN
O
The parts list presented above is an example of recommended parts. Although the parts are sound, actual circuit characteristics should be checked on
your application carefully before use. Be sure to allow sufficient margins to accommodate variations between external devices and this IC when
employing the depicted circuit with other circuit constants modified. Both static and transient characteristics should be considered in establishing these
margins. When switching noise is substantial and may impact the system, a low pass filter should be inserted between the VCC and PVCC pins, and a
schottky barrier diode established between the SW and PGND pins.
ADJ
EN
Coil
Ceramic capacitor
Ceramic capacitor
Ceramic capacitor
Resistance
V
CC
Part
R
C
③
ITH
ITH
10kΩ
1
2
3
4
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
ADJ
V
ITH
GND
Fig.33 I/O equivalence circuit
CC
=1.0V
=1.2V
=1.5V
=1.8V
=2.5V
Fig.32 Layout diagram
750pF
4.7µH
Value
10µF
10µF
12/14
18kΩ
22kΩ
22kΩ
27kΩ
36kΩ
・SW pin
・ITH pin
PGND
PV
SW
EN
ITH
CC
Manufacturer
8
7
6
5
Kyocera
Kyocera
Sumida
murata
ROHM
ROHM
ROHM
ROHM
ROHM
TDK
SW
C
②
IN
L
PV
EN
V
CC
CC
MCR10 1802
MCR10 2202
MCR10 2202
MCR10 2702
MCR10 3602
CMD6D11B
VLF5014AT-4R7M1R1
CM316X5R106K10A
CM316X5R106K10A
GRM18series
PV
C
CC
o
Series
PV
CC
①
Technical Note
2010.04 - Rev.B
V
GND
CC
V
OUT