參數(shù)資料
型號(hào)： LTC4252A-2CMS#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封裝： LEAD FREE, PLASTIC, MSOP-10
文件頁(yè)數(shù)： 16/36頁(yè)
文件大?。?/td> 394K
代理商： LTC4252A-2CMS#PBF
LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
23
425212fb
APPLICATIO S I FOR ATIO
WU
U
a GATE start-up cycle begins. SS ramps up as dictated by
RSS CSS; GATE is held low by the analog current limit
amplifier until SS crosses 20 VOS. Upon releasing GATE,
58
A sources into the external MOSFET gate and compen-
sation network. When the GATE voltage reaches the
MOSFET’s threshold, current begins flowing into the load
capacitor at time point 5. At time point 6, load current
reaches the SS control level and the analog current limit
loop activates. Between time points 6 and 8, the GATE
voltage is servoed, the SENSE voltage is regulated at
VACL(t) and soft-start limits the slew rate of the load
current. If the SENSE voltage (VSENSE – VEE) reaches the
VCB threshold at time point 7, the circuit breaker TIMER
activates. The TIMER capacitor, CT, is charged by a (230A
+ 8 IDRN) current pull-up. As the load capacitor nears full
charge, load current begins to decline. At point 8, the load
current falls and the SENSE voltage drops below VACL(t).
The analog current limit loop shuts off and the GATE pin
ramps further. At time point 9, the SENSE voltage drops
below VCB and the fault TIMER cycle ends, followed by a
5.8
A discharge cycle (cool off). When GATE ramps past
VGATEH threshold at time point 10, PWRGD pulls low. At
time point 11, GATE reaches its maximum voltage as
determined by VIN.
Figure 10. Power-Up Timing with a Short Pin (All Waveforms are Referenced to VEE)
5.8
A
58
A
5.8
A
5.8
A
58
A
GATE
START-UP
INITIAL TIMING
UV CLEARS VUVHI, CHECK OV < VOVHI, GATE < VGATEL, SENSE < VCB, SS < 20 VOS AND TIMER < VTMRL
12
3 4 56
7
8 9
TIMER CLEARS VTMRL, CHECK GATE < VGATEL, SENSE < VCB AND SS < 20 VOS
1011
4252-1/2 F10
GND – VEE OR
(–48RTN) – (–48V)
UV/OV
VIN
TIMER
GATE
SENSE
VOUT
SS
DRAIN
PWRGD
VLKO
VUVHI
VACL
VCB
230
A + 8 IDRN
20 VOS
VIN – VGATEH
VDRNL
VDRNCL
20 (VCB + VOS)
20 (VACL + VOS)
VGATEL
VTMRL
VTMRH
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4252A-2CMSTR 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers
LTC4252A-2CMSTRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers
LTC4252A-2IMS 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
LTC4252A-2IMS#PBF 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
LTC4252A-2IMS#TR 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
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