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参数资料
| 型号： | LTC4361CDC-2#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | 2 X 2 MM, LEAD FREE, PLASTIC, DFN-8 |
| 文件页数： | 15/16页 |
| 文件大小： | 327K |
| 代理商： | LTC4361CDC-2#TRMPBF |
LTC4361-1/LTC4361-2
8
436112fa
APPLICATIONS INFORMATION
The LTC4361-1 has an internal latch that maintains this
off state until it is reset. To reset this latch, cycle IN be-
low 2.1V (VIN(UVL)) or ON above 1.5V (VON(TH)) for more
than 500μs. After reset, the LTC4361-1 goes through the
start-up cycle.
In applications not requiring the overcurrent protection, tie
the SENSE pin to the IN pin. To implement an overcurrent
threshold ITRIP, choose RSENSE using the formula:
RSENSE =
ΔV
OC
ITRIP
After choosing the RSENSE, keep in mind that:
ITRIP(MAX) =
ΔV
OC(MAX)
RSENSE(MIN)
ITRIP(MIN) =
ΔV
OC(MIN)
RSENSE(MAX)
PWRGD Output
PWRGD is an active low output with a MOSFET pull-down
to ground and a 500k resistive pull-up to OUT. The PWRGD
pin pull-down releases during the low current sleep mode
(invoked by ON high), UVLO, overvoltage or overcurrent
and the subsequent 130ms start-up delay. After the start-
up delay, GATE starts its slow ramp-up and control of the
PWRGDpull-downpassesontotheGATEhighcomparator.
VGATE > VGATE(TH) for more than 65ms asserts the PWRGD
pull-down and VGATE < VGATE(TH) releases the pull-down.
The PWRGD pull-down is capable of sinking up to 3mA
of current allowing it to drive an optional LED. To inter-
face PWRGD to another I/O rail, connect a resistor from
PWRGD to the I/O rail with a resistance low enough to
override the internal 500k pull-up to OUT. Figure 2 details
PWRGD behavior for a LTC4361-2 with 1k pull-up to 5V
at PWRGD.
IN
OUT
GATE
ON
PWRGD
VGATE(TH)
VIN(UVL)
ICABLE
OC
THRESHOLD
10μs (NOT TO SCALE)
436112 F02
VIN(OV)– VOV
START-UP
FROM UVLO
RESTART
FROM OV
OV
RESTART
FROM ON
ON
RESTART
FROM OC
OC
VIN(OV)
130ms
65ms
130ms
65ms
130ms
65ms
130ms
65ms
Figure 2. PWRGD Behavior
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4361CTS8-1#PBF | 制造商:Linear Technology 功能描述:Over Voltage Protection Controller 8-Pin TSOT-23 制造商:Linear Technology 功能描述:Bulk 制造商:Linear Technology 功能描述:MS-Hot Swap/Low Voltage, Cut Tape Overvoltage/Overcurrent Protection Controller with Latchoff |
| LTC4361CTS8-1#TRMPBF | 功能描述:IC OVERVOLTAGE/CUR PROT TSOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4361CTS8-1#TRPBF | 功能描述:IC CTLR OVP LATCHOFF TSOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4361CTS8-2#PBF | 制造商:Linear Technology 功能描述: |
| LTC4361CTS8-2#TRMPBF | 功能描述:IC OVERVOLTAGE/CUR PROT TSOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
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