参数资料
| 型号： | LT4356HDE-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/26页 |
| 文件大小： | 0K |
| 描述： | IC OVERVOLT PROT REG 12-DFN |
| 产品培训模块： | LT4356 Surge Stopper |
| 产品目录绘图： | LT4356 Output Graph LT4356 Series 12-DFN |
| 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： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN（4x3） |
| 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 |
LT4356-1/LT4356-2
APPLICATIONS INFORMATION
Fault Timer Current
The timer current starts at around 2μA with 0.5V or less
of V DS , increasing linearly to 50μA with 75V of V DS dur-
ing an overvoltage fault (Figure 1). During an overcurrent
fault, it starts at 4μA with 0.5V or less of V DS but increases
to 260μA with 80V across the MOSFET (Figure 2). This
arrangement allows the pass transistor to turn off faster
When the voltage at the TMR pin, V TMR , 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:
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
V DS in both overvoltage and overcurrent events.
V TMR(V)
I TMR = 5μA
1.35
1.25
V DS = 75V
t WARNING =
C TMR ? 100mV
5μA
I TMR = 5μA
(I TMR = 50μA)
V DS = 10V
(I TMR = 8μA)
0.50
t FLT
= 15ms/μF
t WARNING
= 20ms/μF
TIME
t FLT = 93.75ms/μF
TOTAL FAULT TIMER = t FLT + t WARNING
t WARNING
= 20ms/μF
4356 F01
Figure 1. Overvoltage Fault Timer Current
V TMR(V)
1.35
1.25
V DS = 80V
(I TMR = 260μA)
V DS = 10V
(I TMR = 35μA)
0.50
t FLT
= 2.88ms/μF
t WARNING
= 0.38ms/μF
TIME
t FLT = 21.43ms/μF
TOTAL FAULT TIMER = t FLT + t WARNING
t WARNING
= 2.86ms/μF
4356 F02
Figure 2. Overcurrent Fault Timer Current
4356fa
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT4356HDE-2 | 制造商:Linear Technology 功能描述:MS-Hot Swap/High Voltage, Overvoltage Protection Regulator with Auto-retry |
| LT4356HDE-2#PBF | 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 |
| LT4356HDE-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 |
| LT4356HDE-2PBF | 制造商:Linear Technology 功能描述:Surge Protect Adj Regulator 4-80V 60uA |
| LT4356HDE-3 | 功能描述:IC REG OVP FAULT TIMER 12DFN RoHS:否 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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