參數(shù)資料
型號： MAX4798EUK-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： DAC9881 Performance Demonstration Kit
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝： SOT23-5
文件頁數(shù)： 1/9頁
文件大?。?/td> 239K
代理商： MAX4798EUK-T
General Description
The MAX4795–MAX4798 family of switches feature inter-
nal current limiting to prevent damage to host devices
due to faulty load conditions. These analog switches
have a low 0.2
on-resistance and operate from a 2.0V
to 4.5V input voltage range. They are available with guar-
anteed 450mA and 500mA current limits, making them
ideal for SDIO and other load-switching applications.
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures the
transient voltages settle down. If after this blanking time,
the load current is greater than the current limit, the
MAX4795 and MAX4797 switches are turned off and
FLAG
is issued to the microprocessor. The switch can be
turned on again by cycling the power or the ON input.
The MAX4796 and MAX4798 have an autoretry feature
where the switch turns off and issues a
FLAG
to the
microprocessor after the blanking time and then contin-
uously checks to see if the overload condition is pre-
sent. The switch remains on after the overload condition
disappears and
FLAG
deasserts.
The MAX4795–MAX4798 are available in tiny, space-
saving, 5-pin SOT23 and 6-pin TDFN (3mm x 3mm)
packages.
Applications
SDIO
PDAs and Palmtop Devices
Cell Phones
GPS Systems
Hand-Held Devices
Features
o
Guaranteed Current Limit: 450mA and 500mA
o
Thermal-Shutdown Protection
o
Reverse-Current Protection
o
0.2
On-Resistance
o
14ms Guaranteed Blanking Time
o
FLAG
Function
o
Autoretry (MAX4796/MAX4798)
o
80μA Supply Current
o
6μA Latchoff Current
(MAX4795/MAX4797)
o
0.01μA Shutdown Current
o
+2V to +4.5V Supply Range
o
Fast Current-Limit Response Time
o
Tiny SOT23 and TDFN Packages
o
UL Certification Pending
M
450mA/500mA Current-Limit Switches
________________________________________________________________
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
Ordering Information
+2.0V TO +4.5V
IN
OUT
FLAG
GND
ON
μ
P
TO SDIO PORT
MAX4795
MAX4796
MAX4797
MAX4798
Typical Operating Circuit
19-2944; Rev 0; 8/03
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4795
EUK-T
MAX4795ETT*
MAX4796
EUK-T
MAX4796ETT*
MAX4797
EUK-T
MAX4797ETT*
MAX4798
EUK-T
MAX4798ETT*
-40
°
C to +85
°
C
40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
5 SOT23-5
6 TDFN-EP**
5 SOT23-5
6 TDFN-EP**
5 SOT23-5
6 TDFN-EP**
5 SOT23-5
6 TDFN-EP**
AEDI
—
AEDJ
—
AEDK
—
AEDL
—
GND
FLAG
1
5
OUT
IN
MAX4795
MAX4796
MAX4797
MAX4798
SOT23
TOP VIEW
2
3
4
ON
OUT
FLAG
1
6
ON
5
GND
IN
MAX4795
MAX4796
MAX4797
MAX4798
TDFN
2
3
4
N.C.
Pin Configurations
*
Future product—contact factory for availability.
**
EP = Exposed pad.
Selector Guide appears at end of data sheet.
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