参数资料
| 型号： | BD9139MUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 16/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 16VQFN |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 3.3 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 3A |
| 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： | 16-VFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 16-VQFN（3x3） |
| 其它名称： | BD9139MUV-E2DKR |
BD9139MUV
● Cautions on PC Board Layout
Fig.36 Layout diagram
Datasheet
①
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.
Lay out CITH and RITH between the pins ITH and GND as neat as possible with least necessary wiring.
※ VQFN016V3030 (BD9139MUV) has thermal PAD on the reverse of the package.
The package thermal performance may be enhanced by bonding the PAD to GND plane which take a large area
of PCB.
● Recommended Components Lists on Above Application
Symbol
L
C IN
C O
Cf
Rf
C BST
Part
Coil
Ceramic capacitor
Ceramic capacitor
Ceramic capacitor
Resistance
Ceramic capacitor
Value
2.0μH
2.2μH
22μF
22μF
1000 pF
10 Ω
0.1 μF
Manufacturer
Sumida
Sumida
Murata
Murata
Murata
Rohm
Murata
Series
CDR6D28MNP-2R0NC
CDR6D26NP-2R2NC
GRM32EB11A226KE20
GRM31CB30J226KE18
GRM18 Series
MCR03 Series
GRM18 Series
*VIN=3.3V
V OUT
1.0V
1.2V
1.5V
1.8V
*VIN=5V
V OUT
1.0V
1.2V
1.5V
1.8V
2.5V
3.3V
Co=22μF
7.5k Ω
7.5k Ω
8.2k Ω
10k Ω
Co=22μF
4.7k Ω
4.7k Ω
6.8k Ω
8.2k Ω
10k Ω
12k Ω
Co=44μF
13k Ω
15k Ω
18k Ω
18k Ω
Co=44μF
9.1k Ω
10k Ω
12k Ω
15k Ω
18k Ω
24k Ω
R ITH
Manufacturer
Rohm
Rohm
Rohm
Rohm
R ITH
Manufacturer
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Series
MCR03 Series
MCR03 Series
MCR03 Series
MCR03 Series
Series
MCR03 Series
MCR03 Series
MCR03 Series
MCR03 Series
MCR03 Series
MCR03 Series
Co=22μF
6800pF
6800pF
4700pF
4700pF
Co=22μF
6800pF
6800pF
6800pF
6800pF
4700pF
4700pF
Co=44μF
6800pF
6800pF
6800pF
6800pF
Co=44μF
6800pF
6800pF
6800pF
6800pF
4700pF
4700pF
C ITH
Manufacturer
Murata
Murata
Murata
Murata
C ITH
Manufacturer
Murata
Murata
Murata
Murata
Murata
Murata
Series
GRM18 Series
GRM18 Series
GRM18 Series
GRM18 Series
Series
GRM18 Series
GRM18 Series
GRM18 Series
GRM18 Series
GRM18 Series
GRM18 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. Recommended value of R ITH and C ITH varies by VIN and Co. Co=22μF is recommended.
However, in case of using large Co to reduce output ripple, please refer to the list above. 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 or snubber
established between the SW and PGND pins.
www.rohm.com
?2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
16/20
TSZ02201-0J3J0AJ00170-1-2
02.MAR.2012 Rev.001
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