参数资料
| 型号： | LT4356CS-3#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/24页 |
| 文件大小： | 0K |
| 描述： | IC SURGE STOPPER ADJ 16-SOIC |
| 产品目录绘图： | LT4356 Output Graph LT4356 Series 16-SOIC |
| 标准包装： | 2,500 |
| 电压 - 工作： | 4 ~ 80V |
| 电压 - 箝位： | 27V，可调 |
| 技术： | 混合技术 |
| 电路数： | 1 |
| 应用： | 自动 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
| 配用： | DC1018B-C-ND - DEMO BOARD FOR LT4356-3 DC1018B-B-ND - DEMO BOARD FOR LT4356-2 DC1018B-A-ND - DEMO BOARD FOR LT4356-1 |
LT4356-3
APPLICATIONS INFORMATION
First, calculate the resistive divider value to limit V OUT to
16V during an overvoltage event:
Finally, calculate R4 and R5 for the 6V low battery thresh-
old detection:
V REG =
1.25V ? ( R1 + R2 )
R2
= 16V
6V =
1.25V ? ( R4 + R5 )
R5
= 5k ?
R2 =
( 16V – 1.25V ) ? R2
R1 = = 58.88k ?
( 6V – 1.25V ) ? R5
R4 = = 380k ?
SetthecurrentthroughR1andR2duringtheovervoltage
condition to 250μA.
1.25V
250μA
Choose 4.99kΩ for R2.
1.25V
Choose 100kΩ for R5.
1.25V
Select 383kΩ for R4.
The pass transistor, Q1, should be chosen to withstand
the output short condition with V CC = 14V.
The total overcurrent fault time is:
The closest standard value for R1 is 59kΩ.
Next calculate the sense resistor, R SNS , value:
t OC =
47nF ? 0.85V
45.5μA
= 0.878ms
= 10m ?
R SNS =
=
P=
= 70W
50mV 50mV
I LIM 5A
C TMR is then chosen for 1ms of early warning time:
The power dissipation on Q1 equals to:
14V ? 50mV
10m ?
C TMR =
1ms ? 5μA
100mV
= 50nF
These conditions are well within the Safe Operating Area
of IRLR2908.
The closest standard value for C TMR is 47nF.
43563fb
16
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| LT4356HDE-1 | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 80V 12-Pin DFN EP |
| LT4356HDE-1#PBF | 功能描述:IC OVERVOLT PROT REG 12-DFN RoHS:是 类别:过电压，电流，温度装置 >> 电涌抑制 IC 系列:- 产品培训模块:LT4356 Surge Stopper 产品目录绘图:LT4356 Output Graph LT4356 Series 10-MSOP 标准包装:2,500 系列:- 电压 - 工作:4 ~ 80V 电压 - 箝位:27V，可调 技术:混合技术 功率（瓦特）:- 电路数:1 应用:自动 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:带卷 (TR) 配用:DC1018B-C-ND - DEMO BOARD FOR LT4356-3DC1018B-B-ND - DEMO BOARD FOR LT4356-2DC1018B-A-ND - DEMO BOARD FOR LT4356-1 |
| LT4356HDE-1#TRPBF | 功能描述:IC OVERVOLT PROT REG 12-DFN RoHS:是 类别:过电压，电流，温度装置 >> 电涌抑制 IC 系列:- 产品培训模块:LT4356 Surge Stopper 产品目录绘图:LT4356 Output Graph LT4356 Series 10-MSOP 标准包装:2,500 系列:- 电压 - 工作:4 ~ 80V 电压 - 箝位:27V，可调 技术:混合技术 功率（瓦特）:- 电路数:1 应用:自动 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:带卷 (TR) 配用:DC1018B-C-ND - DEMO BOARD FOR LT4356-3DC1018B-B-ND - DEMO BOARD FOR LT4356-2DC1018B-A-ND - DEMO BOARD FOR LT4356-1 |
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