参数资料
型号: BD8643FV-E2
厂商: Rohm Semiconductor
文件页数: 4/16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:
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
BD8643FV
● Block Diagram
FB
11
FC
GND
10
SS
Technical Note
12
RT
13
OSC
Softstart/Delay
5V
9
8
NC
PSET
CURRENT
BOOT
14
EN
15
Protect time
EN
PWM
DET
7
6
SW
NC
16
CONTROL
5
SW
VOUT
● terminal assignment
NC
17
VIN
18
VIN
19
VIN
20
Fig.11 Block diagram
4
3
2
1
SW
PGND
PGND
PGND
No. Symbol
Description
No.
Symbol
Description
1
2
3
4
5
6
7
8
9
10
PGND
PGND
PGND
SW
SW
SW
BOOT
NC
SS/DELAY
GND
Power GND terminal
Power GND terminal
Power GND terminal
Switching output terminal
Switching output terminal
Switching output terminal
Boot strap terminal
-
Soft start adjustment capacity
connection terminal
Signal GND terminal
11
12
13
14
15
16
17
18
19
20
FB
FC
RT
PSET
EN
NC
NC
VIN
VIN
VIN
Feedback terminal
Phase amends terminal
Frequency adjustment resistance
connection terminal
Adjust OFF LATCH time terminal
Enable input
-
-
Power supply input terminal
Power supply input terminal
Power supply input terminal
● Package outline dimension
Product number
BD8643
1PIN MARK
Lot No.
SSOP-B20W (UNIT: mm)
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
4/13
2010.09 - Rev.A
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