BD9140MUV-E2 Rohm Semiconductor, BD9140MUV-E2 Datasheet - Page 12

• Manufacturer Part Number: BD9140MUV-E2
• Description: IC SWITCH REG 2A W/FET VQFN020
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of BD9140MUV-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2.5 V ~ 6 V
• Current - Output: 2A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.5 V ~ 13.2 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●BD9141MUV Cautions on PC Board layout
●Recommended components Lists on above application
© 2009 ROHM Co., Ltd. All rights reserved.
BD9141MUV
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 neat as possible with least necessary wiring.
④ The Non connection pin must be left open or connected to GND.
※VQFN020V4040 (BD9141MUV) has thermal FIN on the reverse of the package.
※The parts list presented above is an example of recommended parts. Although the parts are sound, actual circuit
The package thermal performance may be enhanced by bonding the FIN to GND plane which take a large area of PCB.
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.
Symbol
C
C
R
pin PGND.
C
VREG
C
L
ITH
ITH
IN
O
Coil
Ceramic capacitor
Ceramic capacitor
Ceramic capacitor
Ceramic capacitor
Resistance
R
R
2
1
Part
C
VREG
R
C
③
ITH
ITH
Vo=3.3V
Vo=3.3V
ADJ
V
VREG
ITH
GND
Vo=5V
Vo=5V
CC
Fig.34 Layout diagram
4.7uH
Value
0.1uF
22uF
22uF
12/15
1000pF
1000pF
20kΩ
47kΩ
PGND
PV
SW
EN
CC
Manufacturer
kyocera
kyocera
murata
murata
murata
Rohm
Rohm
TDK
C
②
IN
L
EN
V
CC
C
GRM188B31H104KA92
GRM1882C1H102JA01
GRM1882C1H102JA01
o
RLF7030T-4R7M3R4
CM32X5R226M25A
CM32X5R226M10A
MCR03 Series
MCR03 Series
Series
①
Technical Note
2009.09 - Rev.B
GND
V
OUT