参数资料
| 型号： | BD8643FV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 20SSOP |
| 标准包装： | 2,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1 V ~ 12.6 V |
| 输入电压： | 4.5 V ~ 18 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 100kHz ~ 600kHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 是 |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-LSSOP（0.240"，6.10mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-SSOP-B |
Single-chip Type with Built-in FET type Switching Regulators
Flexible Step-down
Switching Regulator
with Built-in Power MOSFET
BD8643FV
No.10027EAT43
● Description
The BD8643FV is a synchronous step-down switching regulator that integrates 2 low resistances N-channel MOSFETs.
It achieves 3A continuous output current over a wide input supply range.
Current mode operation provides fast transient response and easy phase compensation.
● Feature
1) Synchronous rectification with built-in FET type DC/DC converter
2) 2.0A output current
3) Range of operation power-supply voltage 4.5V ～ 18V
4) Reference voltage FB 0.8V±1%
5) Programmable frequency 100kHz ～ 600kHz
6) Over current protection function
7) Thermal shutdown function
8) Under voltage protection
9) Soft start time out function / Soft start delay circuit
10) Programmable OFFLATCH time
● Applications
FPD,DVD,HDD Recorder,STB,Amusement,Other
● Absolute maximum ratings (Ta=25 ℃ )
1.19
Parameter
Input supply voltage
BOOT terminal voltage
EN terminal voltage
Input terminal voltage
SW terminal voltage
Output current
Power dissipation
Operating temperature
Storage temperature
Symbol
V IN
V BOOT
V EN
V INP*1
V SW
I OUT
Pd
Topr
Tstg
Ratings
20
28
GND-0.3 ～ V IN +0.3
GND-0.3 ～ 7
GND-0.3 ～ V IN +0.3
3.5
*2
-20 ～ 85
-55 ～ 150
Unit
V
V
V
V
V
A
W
℃
℃
*1 VINP Application terminal: SS/DELAY, FB, FC, RT, PSET
*2 (70mm×70mm, thickness 1.6mm, and four layer glass epoxy substrates)When mounting substrate and the package
back exposure part are connected with solder
Operating at higher than Ta=25 ℃ , 9.5mW shall be reduced per 1
● Operating conditions
Parameter
Input supply voltage
Output current
Symbol
V IN
I OUT
Min.
4.5
-
Ratings
Typ.
-
-
Max.
18.0
3.0
Unit
V
A
*
This product is not designed for protection against radioactive rays.
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
1/13
2010.09 - Rev.A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BD8645EFV | 制造商:ROHM 制造商全称:Rohm 功能描述:Synchronous rectification with built-in FET type DC/DC converter IC |
| BD8646FV | 制造商:ROHM 制造商全称:Rohm 功能描述:Flexible Step-down Switching Regulator with Built-in Power MOSFET |
| BD8646FV_10 | 制造商:ROHM 制造商全称:Rohm 功能描述:Flexible Step-down Switching Regulator with Built-in Power MOSFET |
| BD8646FV-E2 | 制造商:ROHM 制造商全称:Rohm 功能描述:Flexible Step-down Switching Regulator with Built-in Power MOSFET |
| BD8649EFV | 制造商:ROHM 制造商全称:Rohm 功能描述:Flexible Step-down Switching Regulator with Built-in Power MOSFET |
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