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參數(shù)資料
| 型號： | ST2052 |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | CURRENT LIMITED POWER DISTRIBUTION SWITCHES |
| 中文描述： | 現(xiàn)有的有限電力分布交換機 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 417K |
| 代理商： | ST2052 |
1/9
July 2005
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80m
HIGH-SIDE MOSFET SWITCH
500mA CONTINUOUS CURRENT PER
CHANNEL
INDEPENDENT THERMAL AND
SHORT-CIRCUIT PROTECTION WITH
OVERCURRENT LOGIC OUTPUT
OPERATING RANGE FROM 2.7V TO 5.5V
CMOS- AND TTL-COMPATIBLE ENABLE
INPUTS
10 ms OC_N FAULT BLANKING
2.5ms TYPICAL RISE TIME
UNDERVOLTAGE LOCKOUT
10
μ
A MAXIMUM STANDBY SUPPLY
CURRENT
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AMBIENT TEMPERATURE RANGE, 0°C TO
85°C
ESD PROTECTION
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DESCRIPTION
The ST2052 power distribution switches is
intended for application where heavy capacitive
loads and short circuits are likely to be
encountered. These devices incorporate 80m
N-channel MOSFET high-side power switches for
power-distribution systems that require multiple
powers switches in a single package. Each switch
is controlled by an independent logic enable input.
Gate drive is provided by an internal charge pump
designed to control the power-switch rise times
and fall times to minimize current surges during
switching. The charge pump requires no external
components and allows operation from supplies
as low as 2.7 V.
When the output load exceeds the current-limit
threshold or a short is present, these devices limit
the output current to a safe level by switching into
a constant-current mode, pulling the overcurrent
(OCx) logic output low. A 10ms deglitching circuit
provides fault-blanking feature, preventing the
OC_N pin to be asserted during hot-insertion or
short spikes of overcurrent conditions.
When continuous heavy overloads and short
circuits increase the power dissipation in the
switch, causing the junction temperature to rise, a
thermal protection circuit shuts off the switch to
prevent damage. Recovery from a thermal
shutdown is automatic once the device has cooled
sufficiently. Internal circuitry ensures the switch
remains off until valid input voltage is present.
These power-distribution switches are designed to
current limit at 0.9 A
Table 1: Order Codes
Type
Temperature
Range
Package
Comments
ST2052BD
ST2052BDR
-40 to 85 °C
-40 to 85 °C
SO-8 (Tube)
SO-8 (Tape & Reel)
50parts per tube / 40tube per box
2500 parts per reel
ST2052
CURRENT LIMITED
POWER DISTRIBUTION SWITCHES
SOP
Rev. 2
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| ST2052BD | CURRENT LIMITED POWER DISTRIBUTION SWITCHES |
| ST2052BDR | CURRENT LIMITED POWER DISTRIBUTION SWITCHES |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ST2052_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Current limited Power distribution switches |
| ST2052BD | 功能描述:電源開關 IC - 配電 Current Limited Pwr RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| ST2052BDR | 功能描述:電源開關 IC - 配電 Current Limited Pwr RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| ST2054 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Current limited Power distribution switches |
| ST2054_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Current limited Power distribution switches |
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