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參數(shù)資料
| 型號： | MAX14544ETA+T |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 1137K |
| 描述： | IC ACCY SWITCH OVP PROTECT 8TDFN |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 功能： | 電流開關(guān) |
| 輸入電壓： | 2.3 V ~ 5.5 V |
| 電流 - 輸出： | 可調(diào) |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 8-TDFN-EP（2x2） |
| 包裝： | 帶卷 (TR) |
_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxims website at www.maxim-ic.com.
28V-Capable, I
LIM
V
BUS
Accessory Switch
General Description
The MAX14544/MAX14545 are overcurrent detection
switches that can provide power to external accesso-
ries while preventing the host device from damage due
to faulty overload conditions. These analog switches
feature a 270m?(typ) on-resistance and operate from
a +2.3V to +5.5V input voltage range. The selectable
current limit of 200mA or 400mA makes them ideal for
load-switching applications.
The MAX14544 has an autoretry feature, whereas the
MAX14545 has a latchoff feature. When the switch is off,
OUT can withstand 28V maximum. When the switch is on
and a load is connected to the port, a blanking time of
10.5ms ensures that the transient voltage settles down.
After this blanking time, if the voltage across the switch is
greater than the FLAG assertion voltage, the switch turns
off and then a FLAG is issued to the microprocessor.
After the retry time, the device recloses for the duration
of the blanking time to check if the load current is lower
than the limit. The MAX14544 repeats this cycle if the
overload condition is present. During the cycle, FLAG
remains asserted. The MAX14544 remains on after the
overload condition is removed and FLAG deasserts. For
the MAX14545, after the blanking time, the switch turns
off and then a FLAG is issued to the microprocessor. The
switch can be turned on again by cycling the power or
the EN input.
The MAX14544/MAX14545 have additional safety fea-
tures that include thermal shutdown protection, reverse-
current blocking, and overvoltage protection.
The MAX14544/MAX14545 are offered in a space-sav-
ing, 8-pin, 2mm x 2mm TDFN package, and operate over
the -40NC to +85NC extended temperature range.
Applications
Cell Phones
MP3 Players
PDAs
Digital Cameras
eBook
MID
Features
S 200mA or 400mA Selectable Current Limit
S Output Capable of Withstanding +28V
S Reverse-Current Shutdown Protection
S +2.3V to +5.5V Input Operation Range
S Undervoltage Lockout
S Autoretry or Latchoff Option
S Thermal Shutdown Protection
S 0.1?/SPAN>A (typ) Shutdown Current
S 5?/SPAN>s Fast Current-Limit Detect
S 8-Pin TDFN (2mm x 2mm) Package
S -40NC to +85NC Operating Temperature Range
19-5037; Rev 0; 1/10
Pin Configuration
Ordering Information/
Selector Guide
Note: All devices are specified over the -40癈 to +85癈 tem-
perature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
Typical Operating Circuit appears at end of data sheet.
1
+
*EP
*CONNECT EXPOSED PAD TO GND.
3
4
8
6
5
OUT
2
7 OUT
IN
ISET
GND
IN
TDFN
MAX14544
MAX14545
TOP VIEW
EN
FLAG
PART
PIN-
PACKAGE
TOP
MARK
RETRY/
LATCHOFF
MAX14544ETA+T
8 TDFN-EP*
ACY
Autoretry
MAX14545ETA+T
8 TDFN-EP*
ACZ
Latchoff
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX14544EVKIT+ | 功能描述:模擬開關(guān) IC 28V-Capable ILIM VBUS Accessory Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX14545ETA+T | 制造商:Maxim Integrated Products 功能描述:28V-CAPABLE ILIM VBUS ACCESSORY SWITCH - Tape and Reel |
| MAX14547AEUT+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX14547AEUT+T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX14548AEEWL+T | 制造商:Maxim Integrated Products 功能描述:100MBPS, 16-CHANNEL LLTS - Tape and Reel |
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