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参数资料
| 型号： | LT4356IDE-1#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| 封装： | 4 X 3 MM, PLASTIC, MO-229WGED, DFN-12 |
| 文件页数： | 4/26页 |
| 文件大小： | 231K |
| 代理商： | LT4356IDE-1#TR |
LT4356-1/LT4356-2
12
4356fa
Fault Timer Current
The timer current starts at around 2μA with 0.5V or less
of VDS, increasing linearly to 50μA with 75V of VDS dur-
ing an overvoltage fault (Figure 1). During an overcurrent
fault, it starts at 4μA with 0.5V or less of VDS but increases
to 260μA with 80V across the MOSFET (Figure 2). This
arrangement allows the pass transistor to turn off faster
during an overcurrent event, since more power is dissipated
during this condition. Refer to the Typical Performance
Characteristics section for the timer current at different
VDS in both overvoltage and overcurrent events.
When the voltage at the TMR pin, VTMR, reaches the 1.25V
threshold, the FLT pin pulls low to indicate the detection
of a fault condition and provide warning to the load of
the impending power loss. In the case of an overvoltage
fault, the timer current then switches to a xed 5μA. The
interval between FLT asserting low and the MOSFET turn-
ing off is given by:
tWARNING =
CTMR 100mV
5μA
APPLICATIONS INFORMATION
Figure 1. Overvoltage Fault Timer Current
Figure 2. Overcurrent Fault Timer Current
tFLT
= 15ms/μF
TOTAL FAULT TIMER = tFLT + tWARNING
tWARNING
= 20ms/μF
tFLT = 93.75ms/μF
tWARNING
= 20ms/μF
VTMR(V)
ITMR = 5μA
VDS = 75V
(ITMR = 50μA)
VDS = 10V
(ITMR = 8μA)
1.35
1.25
TIME
4356 F01
0.50
tFLT
= 2.88ms/μF
TOTAL FAULT TIMER = tFLT + tWARNING
tFLT = 21.43ms/μF
tWARNING
= 2.86ms/μF
tWARNING
= 0.38ms/μF
VTMR(V)
VDS = 10V
(ITMR = 35μA)
1.35
1.25
0.50
TIME
4356 F02
VDS = 80V
(ITMR = 260μA)
相关PDF资料 |
PDF描述 |
|---|---|
| LT4356HDE-2#TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| LT4356HMS-1 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| LT4356CDE-1#TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| LT4356HS-2#TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| LT4356MPS-2#TR | SPECIALTY ANALOG CIRCUIT, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT4356IDE-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Overvoltage Protection Regulator and Inrush Limiter |
| LT4356IDE-2 | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 80V 12-Pin DFN EP |
| LT4356IDE-2#PBF | 功能描述:IC SURGE STOPPER 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 |
| LT4356IDE-2#PBF | 制造商:Linear Technology 功能描述:IC SURGE STOPPER 16V DFN-12 |
| LT4356IDE-2#TRPBF | 功能描述:IC SURGE STOPPER ADJ 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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