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參數(shù)資料
| 型號(hào)： | MAX1922ESA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1A Current-Limited Switch for 2 USB Ports |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 0.150 INCH, SOIC-8 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 711K |
| 代理商： | MAX1922ESA |
M
1A Current-Limited Switch for 2 USB Ports
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
OUT
1
2
8
7
OUT
OUT
IN
IN
GND
SO
TOP VIEW
3
4
6
5
MAX1922
OC
EN
MAX1922
IN
OUTPUT
OUT
INPUT
2.7V TO 5.5V
ON
OFF
GND
OC
EN
Typical Operating Circuit
19-2254; Rev 1; 12/02
Pin Configuration
Ordering Information
General Description
The MAX1922 current-limited 70m
switch with built-in
fault blanking provides an accurate, preset 1.4A to 2.1A
current limit, making it ideal for dual USB applications.
Its low quiescent supply current (16μA) and standby
current (1μA) conserve battery power in portable appli-
cations. The MAX1922 operates with inputs from 2.7V
to 5.5V, making it ideal for both 3V and 5V systems.
An overcurrent signal (
OC
) notifies the microprocessor
that the internal current limit has been reached. A 10ms
overcurrent-blanking feature allows momentary faults
(such as those caused when hot-swapping into a
capacitive load) to be ignored, thus preventing false
alarms to the host system. This blanking also prevents
an
OC
signal from being issued when the device is
powering up.
The MAX1922 has several safety features to ensure that
the USB port is protected. Built-in thermal-overload pro-
tection limits power dissipation and junction tempera-
ture. The device also has accurate internal current-
limiting circuitry to protect the input supply against
overload.
The MAX1922 is offered in a space-saving 8-pin SO
package and operates over the extended (-40°C to
+85°C) temperature range.
Applications
Notebook Computers
USB Ports
USB Hubs
Docking Stations
Features
Accurate Current Limit (1.4A min, 2.1A max)
10ms Internal
OC
Blanking Timeout
OC
Blanking During Power-Up
125m
max High-Side MOSFET
Short-Circuit and Thermal Protection with
Overcurrent Logic Output
Undervoltage Lockout
16μA Quiescent Supply Current
1μA (max) Standby Supply Current
2.7V to 5.5V Supply Range
UL Recognized: UL# E211935
PART
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
8 SO
MAX1922ESA
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1922ESA+ | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1922ESA+C71073 | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1922ESA+T | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1922ESA-T | 功能描述:電源開關(guān) IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1922ETB+ | 制造商:Maxim Integrated Products 功能描述:CURRENT LIMIT SW 1-IN 1-OUT 2.7V TO 5.5V 2.1A 10TDFN EP - Rail/Tube |
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