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參數(shù)資料
| 型號(hào)： | LTC1153 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Auto-Reset Electronic Circuit Breaker |
| 中文描述： | 自動(dòng)復(fù)位電子斷路器 |
| 文件頁(yè)數(shù)： | 7/16頁(yè) |
| 文件大?。?/td> | 342K |
| 代理商： | LTC1153 |
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7
LTC1153
TEST CIRCUITS
TW
U
W
LTC1153 OPERATIOU
The LTC1153 is an electronic circuit breaker with built-in
MOSFET gate charge pump, over-current detection and
auto-reset circuitry. The LTC1153 consists of the follow-
ing functional blocks:
TTL and CMOS Compatible Inputs
The LTC1153 input and shutdown input have been de-
signed to accommodate a wide range of logic families.
Both input thresholds are set at about 1.3V with approxi-
mately 100mV of hysteresis.
A low standby current voltage regulator provides continu-
ous bias for the TTL-to-CMOS converter. The TTL-to-
CMOS converter output enables the rest of the circuitry. In
this way the power consumption is kept to a minimum in
the standby mode.
Auto-Reset Timer
An external timing capacitor, C
T
, is ramped up by a small
current whenever a fault is detected, i.e., the switch
latched off. When the timing capacitor ramps up to ap-
proximately 2.5V, the switch is turned back on and the
timing capacitor discharged. If the circuit breaker output
is still in an overload state, the breaker will latch off and this
cycle will continue until the fault condition is removed.
Internal Voltage Regulation
The output of the TTL-to-CMOS converter drives two
regulated supplies which power the low voltage CMOS
logic and analog blocks. The regulator outputs are isolated
from each other so that the noise generated by the charge
pump logic is not coupled into the 100mV reference or the
analog comparator.
Gate Charge Pump
Gate drive for the MOSFET switch is produced by an
adaptive charge pump circuit which generates a gate
voltage substantially higher than the power supply volt-
age. The charge pump capacitors are included on-chip and
therefore no external components are required to generate
the gate drive.
Drain Current Sense
The LTC1153 is configured to sense the current flowing
into the drain of an N-channel MOSFET switch. An internal
100mV reference is compared to the drop across a sense
resistor (typically 0.002
to 0.10
) in series with the
drain lead. If the drop across this resistor exceeds the
internal 100mV threshold, the input latch is reset and the
gate is quickly discharged via a relatively large N-channel
transistor.
OVER-CURRENT
(AUTO-CURRENT)
NORMAL
OFF
NOR-
MAL
SHUT-
DOWN
OFF
*90ms
*200
μ
s
S1 CLOSED
S1 OPEN
*TIMES FOR COMPONENTS SHOWN IN TEST CIRCUIT
LTC1153 TD01
INPUT
OUTPUT
STATUS
TIMING
CAP
SHUT-
DOWN
IN
C
T
STATUS
GND
V
S
DS
G
SD
LTC1153
SHUTDOWN
8
7
6
5
1
2
3
4
R
SEN
0.05
IRLZ24
OUTPUT
S1
1
10
C
P
0.01
μ
F
R
D
100k
0.1
μ
F
Z5U
51k
STATUS
INPUT
5V
LTC1153 TC01
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PDF描述 |
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| LTC1153C | Auto-Reset Electronic Circuit Breaker |
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| LTC1159-3. 3 | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1153C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Auto-Reset Electronic Circuit Breaker |
| LTC1153CN8 | 功能描述:IC ELECTRNC CIRCUIT BREAKER 8DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LTC1153CN8#PBF | 功能描述:IC ELECTRNC CIRCUIT BREAKER 8DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LTC1153CS8 | 功能描述:IC ELECTR CIRCUIT BREAKER 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LTC1153CS8#PBF | 功能描述:IC ELECTR CIRCUIT BREAKER 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:熱電冷卻器 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.173"，4.40mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:28-TSSOP 裸露焊盤 包裝:管件 產(chǎn)品目錄頁(yè)面:1410 (CN2011-ZH PDF) |
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