MAX4791 반도체 회로 부품 판매점
(MAX4789 - MAX4794) 200mA/250mA/300mA Current-Limit Switches
|
|
 Maxim Integrated Products |
19-2663; Rev 2; 2/05
200mA/250mA/300mA Current-Limit Switches
www.datasheet4u.com
General Description
The MAX4789–MAX4794 family of switches feature
internal current limiting to prevent damage to host
devices due to faulty load conditions. These analog
switches have a low 0.2Ω on-resistance and operate
from 2.3V to 5.5V input voltage range. They are avail-
able with guaranteed 200mA, 250mA, and 300mA cur-
rent 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 that
the transient voltages settle down. If after this blanking
time the load current is greater than the current limit,
the MAX4789, MAX4791, and MAX4793 enter a latch-
off state where the switch is turned off and FLAG is
issued to the microprocessor. The switch can be turned
on again by cycling the power or the ON pin.
The MAX4790, MAX4792, and MAX4794 have an
autoretry feature where the switch turns off after the
blanking time and then continuously checks to see if
the overload condition is present. The switch remains
on after the overload condition disappears.
The MAX4789–MAX4794 are available in 6-pin 3mm x
3mm TDFN and tiny space-saving 4-pin SOT143 pack-
ages. The MAX4789/MAX4791/MAX4793 are also avail-
able in a tiny 5-pin SOT23 package. For lower current
current-limiting switches, refer to the MAX4785–MAX4788
data sheet.
Applications
PDAs and Palmtop Devices
Cell Phones
GPS Systems
Hand-Held Devices
SDIO
Pin Configurations
TOP VIEW
IN 1
GND 2
ON 3
MAX4789
MAX4791
MAX4793
5 OUT OUT 1
4 FLAG GND 2
MAX4789–
MAX4794
4 IN
3 ON
SOT23
SOT143
Pin Configurations continued at end of data sheet.
Features
♦ Guaranteed Current Limit: 200mA, 250mA, 300mA
♦ Thermal-Shutdown Protection
♦ Reverse Current Protection
♦ 0.2Ω On-Resistance
♦ 14ms Guaranteed Blanking Time
♦ FLAG Function (MAX4789/MAX4791/MAX4793)
♦ 80µA Supply Current
♦ 8µA Latch-Off Current
(MAX4789/MAX4791/MAX4793)
♦ 0.01µA Shutdown Current
♦ 2.3V to 5.5V Supply Range
♦ Undervoltage Lockout
♦ Fast Current-Limit Response Time (5µs)
♦ TDFN and SOT23/SOT143 Packages
Ordering Information
PART
TEMP RANGE PIN-PACKAGE TOP
MARK
MAX4789EUS-T -40°C to +85°C 4 SOT143-4
KAFE
MAX4789EUK-T -40°C to +85°C 5 SOT23-5
AEAC
MAX4789ETT
-40°C to +85°C 6 TDFN-EP*
ABO
MAX4790EUS-T -40°C to +85°C 4 SOT143-4
KAFF
MAX4790ETT
-40°C to +85°C 6 TDFN-EP
ABP
*EP = Exposed pad.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
Typical Operating Circuit
2.3V TO 5.5V
IN
ON
MAX4789 FLAG
MAX4791
MAX4793
TO SDIO PORT
OUT
GND
µP
________________________________________________________________ Maxim Integrated Products 1
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.
200mA/250mA/300mA Current-Limit Switches
www.daAtasBheSeOt4uL.cUomTE MAXIMUM RATINGS
IN, ON, FLAG, OUT to GND .....................................-0.3V to +6V
OUT Short Circuit to GND .................................Internally Limited
Continuous Power Dissipation (TA = +70°C)
4-Pin SOT143 (derate 4.0mW/°C above +70°C)..........320mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
6-Pin TDFN (derate 24.4mW/°C above +70°C).........1951.2mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
Operating Voltage
Quiescent Current
Latch-Off Current (Note 2)
Shutdown Current
Forward Current Limit
Reverse Current Limit
ON Input Leakage
Off Switch Leakage
Undervoltage Lockout
Undervoltage Lockout Hysteresis
On-Resistance
ON Input Logic High Voltage
ON Input Logic Low Voltage
FLAG Output Logic Low Voltage
FLAG Output High Leakage
Current
Thermal Shutdown
Thermal-Shutdown Hysteresis
DYNAMIC
Turn-On Time (Note 3)
Turn-Off Time (Note 3)
SYMBOL
VIN
IQ
ILATCH
ISHDN
UVLO
CONDITIONS
VON = VIN, IOUT = 0, VIN = +2.3V to +5.0V
switch on
VIN = +5.0V to +5.5V
VON = VIN, after an overcurrent fault
(MAX4789/MAX4791/MAX4793)
VON = 0V
MAX4789/MAX4790
MAX4791/MAX4792
MAX4793/MAX4794
MAX4789/MAX4790
MAX4791/MAX4792
MAX4793/MAX4794
VON = VIN or GND
VON = 0V, VOUT = 0V
Rising edge
RON
VIH
VIL
TA = +25°C, IOUT = 100mA
TA = -40°C to +85°C, IOUT = 100mA
ISINK = 1mA (MAX4789/MAX4791/MAX4793)
VIN = V FLAG = 5.5V
(MAX4789/MAX4791/MAX4793)
VON from low to high; IOUT = 10mA,
CL = 0.1µF
VON from high to low; IOUT = 10mA,
CL = 0.1µF
MIN
2.3
200
250
300
-1
1.8
2.0
TYP
80
8
0.01
0.01
100
0.2
MAX
5.5
120
160
15
1
300
375
450
300
375
450
+1
1
2.2
0.4
0.5
0.8
0.4
1
150
15
100
40
UNITS
V
µA
µA
µA
mA
mA
µA
µA
V
mV
Ω
V
V
V
µA
°C
°C
µs
ns
2 _______________________________________________________________________________________
|
PDF 파일 내의 페이지 : 총 12 페이지
제조업체: Maxim Integrated Products
( maxim )
MAX4791 data
데이터시트 다운로드 :
[ MAX4791.PDF ]
[ MAX4791 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
MAX479
17A Max / Dual/Quad / Single-Supply / Precision Op Amps - Maxim Integrated
MAX479
17A Max / Dual/Quad / Single-Supply / Precision Op Amps - Maxim Integrated
MAX4790
(MAX4789 - MAX4794) 200mA/250mA/300mA Current-Limit Switches - Maxim Integrated Products
MAX4791
(MAX4789 - MAX4794) 200mA/250mA/300mA Current-Limit Switches - Maxim Integrated Products
MAX4792
(MAX4789 - MAX4794) 200mA/250mA/300mA Current-Limit Switches - Maxim Integrated Products
MAX4793
(MAX4789 - MAX4794) 200mA/250mA/300mA Current-Limit Switches - Maxim Integrated Products
MAX4794
(MAX4789 - MAX4794) 200mA/250mA/300mA Current-Limit Switches - Maxim Integrated Products