参数资料
型号: BD3951F-E2
厂商: Rohm Semiconductor
文件页数: 5/12页
文件大小: 0K
描述: IC REG LDO 5V .15A 8SOP
标准包装: 2,500
稳压器拓扑结构: 正,固定式
输出电压: 5V
输入电压: 6 V ~ 20 V
电压 - 压降(标准): 0.31V @ 100mA
稳压器数量: 1
电流 - 输出: 150mA(最小)
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.173",4.40mm 宽)
供应商设备封装: 8-SOP
包装: 带卷 (TR)
BD3951F
● Input/Output terminal Circuit
Technical Note
Vcc
SIN(2pin)
RADJ(3pin)
CT(4pin)
SIN(2pin)
200k
Vcc
300k
RADJ ( 3pin )
340
4.1k
Vcc
CT(4pin)
RES(6pin)
20k
OUT(8pin)
20k
SOUT(7pin)
OUT(8pin)
OUT(8pin)
Vcc
RES(6pin)
SOUT(7pin)
1260k
OUT(8pin)
420k
Fig.15
● How to set RESET delay time using CT terminal capacitor
There are three factors to define the RESET delay time TdLH. External capacitor value Cct of the CT terminal, internal
charge resistor and internal reference voltage. RESET delay time is approximately described as below equation.
(TYP): TdLH ≒ 300K × Cct(sec)
Internal charge resistor 300k has some inaccuracy. The deviation of this inaccuracy is shown in Fig. 16. However, as
TdLH delay time may be effected by application board, application board test is recommended to select the right Cct.
10,000
1,000
100
10
1
(MAX): TdLH ≒ 530k×Cct
(TYP): TdLH ≒ 300k×Cct
(MIN): TdLH ≒ 170k×Cct
0.01
0.1
1
10
Cct[μF]
Fig.16
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
5/9
2009.07 - Rev.A
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