- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384633 > LTC1645CS8 (LINEAR TECHNOLOGY CORP) Low Power Timer 8-SOIC 0 to 70 PDF資料下載
參數(shù)資料
| 型號： | LTC1645CS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Low Power Timer 8-SOIC 0 to 70 |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 6/24頁 |
| 文件大?。?/td> | 312K |
| 代理商： | LTC1645CS8 |
6
LTC1645
(14-Lead Package/8-Lead Package)
Whenever the timer is inactive, an internal N-channel FET
shorts the TIMER pin to ground. Activating the timer
connects a 2
μ
A current source from V
CC1
to the TIMER pin
and the voltage starts to ramp up with a slope dv/dt = 2
μ
A/
C
TIMER
. When the voltage reaches the trip point (1.23V),
the timer is reset by pulling the TIMER pin back to ground.
The timer period is (1.23V C
TIMER
)/2
μ
A.
GATE1 (Pin 12/Pin 6):
Channel 1 High Side Gate Drive.
Connect to the gate of an external N-channel MOSFET. An
internal charge pump guarantees at least 4.5V of gate
drive. The charge pump is powered by the higher of V
CC1
and V
CC2
. When the ON pin exceeds 0.8V, GATE1 is turned
on by connecting a 10
μ
A current source from the charge
pump output to the GATE1 pin and the voltage starts to
ramp up with a slope dv/dt = 10
μ
A/C
GATE1
. While the ON
pin is below 0.8V but above 0.4V, a 40
μ
A current source
pulls GATE1 toward ground. If the ON pin is below 0.4V,
the circuit breaker trips or the undervoltage lockout circuit
trips, the GATE1 pin is immediately pulled to ground with
a 12mA (typ) current source.
SENSE1 (Pin 13/Pin 7):
V
CC1
Circuit Breaker Set Pin. With
a sense resistor placed in the supply path between V
CC1
and SENSE1, the circuit breaker trips when the voltage
across the resistor exceeds 50mV for more than 1.5
μ
s. If
the circuit breaker trip current is set to twice the normal
operating current, only 25mV is dropped across the sense
resistor during normal operation. To disable the circuit
breaker, short V
CC1
and SENSE1 together.
V
CC1
(Pin 14/Pin 8):
Positive Supply Input. V
CC1
can range
from 2.375V to 12V for normal operation. I
CC1
is typically
1mA. An undervoltage lockout circuit disables the chip
whenever the voltage at V
CC1
is less than 2.23V. All internal
logic is powered by V
CC1
.
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
2.23V
UVL
2V
ON
0.8V
0.4V
REF
1.5
μ
s
FILTER
1.12V
UVL
1.5
μ
s
FILTER
LOGIC
GLITCH
FILTER
REF
REF
4
×
CHARGE
PUMP
1.238V
REFERENCE
50mV
50mV
2
μ
A
+
+
10
V
CC1
14
SENSE1
13
V
CC2
1
SENSE2
2
GATE1
12
GATE2
3
FB
6
RESET
5
GND
7
COMP
+
8
COMPOUT
9
FAULT 4
1645 BD
TIMER 11
PIU
BLOCK DIAGRA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1645I | Low Power Timer 8-SOIC 0 to 70 |
| LTC1645IS | Low Power Timer 8-SOIC 0 to 70 |
| LTC1645IS8 | Low Power Timer 8-PDIP 0 to 70 |
| LTC1649 | Low Power Timer 8-SOIC -40 to 85 |
| LTC1649CS | Low Power Timer 8-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1645CS8#PBF | 功能描述:IC CTLR HOT SWAP SEQ 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC1645CS8#TR | 功能描述:IC CTRLR SEQ 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 |
| LTC1645CS8#TRPBF | 功能描述:IC CTRLR SEQ HOTSWAP DUAL 8SOIC 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 |
| LTC1645IS | 功能描述:IC CTRLR SEQ HOTSWAP DUAL 14SOIC 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 |
| LTC1645IS#PBF | 功能描述:IC CTLR HOT SWAP SEQ DUAL 14SOIC 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。