參數(shù)資料
型號(hào)： LTC4221
廠商： Linear Technology Corporation
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection
中文描述： 雙熱插拔控制器/電源與雙速序列，雙級(jí)故障保護(hù)
文件頁(yè)數(shù)： 1/28頁(yè)
文件大小： 311K
代理商： LTC4221
1
LTC4221
4221f
Dual Hot Swap Controller/
Power Sequencer with Dual Speed,
Dual Level Fault Protection
■
Allows Safe Board Insertion and Removal from a
Live Backplane
■
Configurable Power Supply Sequencing
■
Soft-Start with Current Foldback Limits Inrush
Current
■
No External Gate Capacitor Required
■
Adjustable Dual Level Circuit Breaker Protection
■
Controls Supply Voltages from 1V to 13.5V
■
Independent N-Channel MOSFET High Side Drivers
■
FB
Pin Monitors V
OUT
for Overvoltage Protection
■
Latch Off or Automatic Retry on Current Fault
■
FAULT and PWRGD Outputs
■
Narrow 16-Pin SSOP Package
APPLICATIU
■
Electronic Circuit Breaker
■
Power Supply Sequencing
■
Live Board Insertion and Removal
■
Industrial High Side Switch/Circuit Breaker
The LTC
4221 is a 2-channel Hot Swap
TM
controller that
allows a board to be safely inserted and removed from a
live backplane. Using two independent high side gate
drivers to control two external N-channel pass transistors,
the output voltages can be ramped up with current foldback
to limit the inrush current during the start-up period. No
external compensation capacitors are required at the
GATE pins. The two channels can be configured to ramp up
and down separately or simultaneously for supply volt-
ages ranging from 2.7V to 13.5V and 1V to 13.5V for
channels 1 and 2 respectively.
Each channel has two current limit comparators that
provide dual level and dual speed overcurrent circuit
breaker protection after the start-up period. If any current
sense voltage exceeds 100mV for 1
μ
s or 25mV for the
timeout delay (set by the C
FILTER
at the FILTER pin), then
the FAULT latch is set and both GATE pins are pulled low.
The FB pins monitor the respective channel output volt-
ages and provide the inputs for the PWRGD comparators
as well as overvoltage protection.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
2-Channel Hot Swap Controller
ON2
FAULT
GND
LTC4221
FB2
PWRGD2
PWRGD1
PWRGD2
V
3.3V/5A
V
2.5V/5A
PWRGD1
FB1
LONG
LONG
SHORT
LONG
GND
FAULT
*SMAJ10 (OPTIONAL)
SHORT
TIMER
FILTER
ON1
V
CC1
SENSE1 GATE1 V
CC2
SENSE2 GATE2
SHORT
V
3.3V
V
2.5V
BACKPLANE
CONNECTOR
(FEMALE)
PCB EDGE
CONNECTOR
(MALE)
10
21k
13.3k
10k
10k
10
14.3k
IRF7413
5.11k
10k
10k
20k
5.11k
4221 TA01
100nF
*
*
1nF
470nF
100nF
IRF7413
0.004
0.004
DESCRIPTIOU
FEATURES
TYPICAL APPLICATIO
U
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參數(shù)描述
LTC4221CGN 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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
LTC4221CGN#PBF 功能描述:IC CTLR HOT SWAP DUAL 16SSOP 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
LTC4221CGN#TR 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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
LTC4221CGN#TRPBF 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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
LTC4221IGN 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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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