参数资料
| 型号： | BD9139MUV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 1/22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 |
Datasheet
2.7V to 5.5V, 3A 1ch
Synchronous Buck Converter integrated FET
BD9139MUV
● General Description
● Key Specifications
ROHM’s high efficiency step-down switching regulator
BD9139MUV is a power supply designed to produce a
low voltage including 0.8 volts from 5.5/3.3 volts power
supply line. Offers high efficiency with our original pulse
skip control technology and synchronous rectifier.
Employs a current mode control system to provide
faster transient response to sudden change in load.
● Features
? Input voltage range:
? Output voltage range:
? Output current:
? Switching frequency:
? High side FET ON resistance:
? Low side FET ON resistance:
? Standby current:
? Operating temperature range:
2.7V to 5.5V
0.8V to 3.3V
3.0A (Max.)
1MHz(Typ.)
100m Ω (Typ.)
80m Ω (Typ.)
0μA (Typ.)
-40 ℃ to +105 ℃
? Offers fast transient response with current mode
PWM control system.
? Offers highly efficiency for all load range with
synchronous rectifier (Nch/Nch FET) and
SLLM(Simple Light Load Mode)
? Incorporates soft-start function.
? Incorporates thermal protection and ULVO
functions.
? Incorporates short-current protection circuit with
time delay function.
? Incorporates shutdown function
● Applications
Power supply for LSI including DSP, Micro computer and ASIC
● Package
VQFN016V3030:
(Typ.) (Typ.) (Max.)
3.00mm x 3.00mm x 1.00mm
● Typical Application Circuit
Rf
Cf
VQFN016V3030
VCC
Cin
EN
PVCC
VCC
CBST
VOUT
ADJ
RITH
ITH
GND,PGND
SW
L
ESR
RO
VOUT
CITH
Fig. 1
○ Product structure ： Silicon monolithic integrated circuit
CO
Typical application circuit
○ This product is not designed protection against radioactive rays.
www.rohm.com
?2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 14 ? 001
1/20
TSZ02201-0J3J0AJ00170-1-2
02.MAR.2012 Rev.001
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