參數(shù)資料
型號(hào): LTC1647-1IS8#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 10/22頁(yè)
文件大小: 239K
描述: IC CONTROLLR HOTSWAP DUAL 8-SOIC
標(biāo)準(zhǔn)包裝: 2,500
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: 2.7 V ~ 16.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
LTC1647-1/
LTC1647-2/LTC1647-3
10
1647fa
BLOCK DIAGRAMS
14

+
50約
FILTER

+
1.21V
50mV
CHANNEL ONE
CHANNEL TWO
(DUPLICATE OF CHANNEL ONE)
10糀
CP
+

50糀
FAULT
2.45V
UVL
CHARGE
PUMP
REFERENCE
1.21V
SENSE2
4
ON2
5
FAULT2
1647-1/2/3 BD3
16
V
CC2
12  GATE2
8
GND
CP
V
CC
SELECTION
15
SENSE1
13  GATE1
3
FAULT1
2
ON1
1
V
CC1
LTC1647-3
V
CC
 Selection Circuit
The LTC1647-3 features separate supply inputs (V
CC1
 
and V
CC2
) for each channel. The reference and charge
pump circuit draw supply current from the higher of the
two supplies. An internal V
CC
 selection circuit detects and
makes the power connection automatically. This allows
a 3V channel to have standard MOSFET gate overdrive
when the other channel is 5V. An internal Zener clamps
GATE about 15V above V
CC
.
If both supplies are connected together (internally for
LTC1647-1 and LTC1647-2 or externally for LTC1647-3),
the reference and charge pump circuit draw equal current
from both pins.
APPLICATIONS INFORMATION
Electronic Circuit Breaker
Each channel of the LTC1647 features an electronic circuit
breaker to protect against excessive load current and short-
circuits. Load current is monitored by sense resistor R1 as
shown in Figure 1. The circuit breaker threshold, V
CB
, is
50mV and it exhibits a response time, t
FAULT
, of approximately
300ns. If the voltage between V
CC
 and SENSE exceeds V
CB
 
for more than t
FAULT
, the circuit breaker trips and immediately
pulls GATE low with a 50mA current sink. The MOSFET turns
off and FAULT pulls low. The circuit breaker is cleared by
pulling the ON pin low for a period of at least t
RESET
 (50約).
A timing diagram of these events is shown in Figure 2.
The value of the sense resistor R1 is given by:
   R1 = V
CB
/I
TRIP
(?
相關(guān)PDF資料
PDF描述
LTC1704EGN#TRPBF IC REG DL BUCK/LINEAR 16SSOP
LTC1966MPMS8#TRPBF IC RMS/DC CONV MICROPWR 8-MSOP
LTC1967IMS8#TRPBF IC CONVERTER RMS-DC PREC 8MSOP
LTC1968IMS8#TRPBF IC CONVERTER RMS-DC PREC 8MSOP
LTC3100EUD#TRPBF IC REG BUCK/BOOST/LINEAR 16-QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1647-2CS8 功能描述:IC CONTROLLER HOTSWAP DUAL 8SOIC 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(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)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(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP(3x3) 包裝:管件
LTC1647-2CS8#PBF 功能描述:IC CTLR HOTSWAP DUAL 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LTC1647-2CS8#TR 功能描述:IC CONTROLLER HOTSWAP DUAL 8SOIC 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(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)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(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP(3x3) 包裝:管件
LTC1647-2CS8#TRPBF 功能描述:IC CONTROLLR HOTSWAP DUAL 8-SOIC 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(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)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(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP(3x3) 包裝:管件
LTC1647-2IS8 功能描述:IC CONTROLLER HOTSWAP DUAL 8SOIC 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(kāi)關(guān) 應(yīng)用:通用 內(nèi)部開(kāi)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(pán) 供應(yīng)商設(shè)備封裝:10-TDFN-EP(3x3) 包裝:管件