參數(shù)資料
型號: 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
文件頁數(shù): 2/8頁
文件大?。?/td> 711K
代理商: MAX1922ESA
M
1A Current-Limited Switch for 2 USB Ports
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN,
EN
,
OC
to GND...................................................-0.3V to +6V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Maximum Switch Current.........................2.3A (internally limited)
OUT Short-Circuit to GND..........................................Continuous
ELECTRICAL CHARACTERISTICS
(V
IN
= 5V,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°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.
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
Operating Temperature Range (extended).........-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OPERATING CONDITION
Input Voltage
POWER SWITCH
V
IN
2.7
5.5
V
T
A
= +25°C
V
IN
= 4.4V to 5.5V
V
IN
= 4.4V to 5.5V
V
IN
= 3V
70
100
125
150
200
20
Switch Static Drain-Source On-
State Resistance
R
DS(ON)
T
A
= 0°C to +85°C
72
80
6
m
Switch Turn-On Time
Switch Turn-Off Time
ENABLE INPUT (
EN
)
t
ON
t
OFF
I
LOAD
= 400mA
I
LOAD
= 400mA
μs
μs
3
V
IN
= 2.7V to 3.6V
V
IN
= 3.7V to 5.5V
V
IN
= 2.7V to 5.5V
V
EN
= V
IN
or GND
V
IN
= 5V, C
OUT
= 150μF from
EN
driven low
to 50% full V
OUT
2.0
2.4
EN
High-Level Input Voltage
V
IH
V
EN
Low-Level Input Voltage
EN
Input Current
V
IL
0.8
1
V
μA
-1
Startup Time
1
ms
CURRENT LIMIT
Overload Output Current
Short-Circuit Output Current
SUPPLY CURRENT
Supply Current, Low-Level Input
I
LIMIT
I
SC
Force V
OUT
to 4.5V
OUT shorted to GND
1.4
1.75
1
2.1
1.4
A
A
V
EN
= V
IN
= V
OUT
= 5.5V
0.002
16
35
0.01
1
25
μA
Timer not running
Timer running
T
A
= +25°C
T
A
= 0°C to +85°C
Supply Current, High-Level
Input
I
Q
V
EN
= 0, I
OUT
= 0
μA
2
15
Supply-Leakage Current
V
EN
= V
IN
= 5.5V,
V
OUT
= 0
μA
UNDERVOLTAGE LOCKOUT
Undervoltage Lockout
OVERCURRENT (
OC
)
OC
Threshold
OC
Output Low Voltage
UVLO
Rising edge, 100mV hysteresis
2.0
2.4
2.6
V
1.1
A
V
V
OL
I
SINK
= 1mA, V
IN
= 3V
0.4
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