参数资料
| 型号： | BD9140MUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 15/21页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 2A VQFN020 |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 6 V |
| 输入电压： | 4.5 V ~ 13.2 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | VQFN020V4040 |
BD9141MUV
● Cautions on PC Board Layout
R 2
V CC
Datasheet
ADJ
EN
EN
R 1
V CC
PV CC
C VREG
R ITH
③
C ITH
VREG
ITH
GND
SW
PGND
C IN
②
L
C o
①
V OUT
GND
Fig.36 Layout diagram
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
pin PGND.
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 package thermal performance may be enhanced by bonding the FIN to GND plane which take a large area of PCB.
● Recommended Components Lists on Above Application
Symbol
L
C IN
C O
C VREG
Part
Coil
Ceramic capacitor
Ceramic capacitor
Ceramic capacitor
Value
4.7μH
22μF
22μF
0.1μF
Manufacturer
TDK
kyocera
kyocera
murata
Series
RLF7030T-4R7M3R4
CM32X5R226M25A
CM32X5R226M10A
GRM188B31H104KA92
C ITH
R ITH
Ceramic capacitor
Resistance
Vo=3.3V
Vo=5V
Vo=3.3V
Vo=5V
1000pF
1000pF
20k Ω
47k Ω
murata
murata
Rohm
Rohm
GRM1882C1H102JA01
GRM1882C1H102JA01
MCR03 Series
MCR03 Series
※ 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.
www.rohm.com
?2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
15/19
TSZ02201-0J3J0AJ00180-1-2
02.MAR.2012 Rev.001
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