參數(shù)資料
型號(hào)： MAX1922
廠商： Maxim Integrated Products, Inc.
英文描述： 1A Current-Limited Switch for 2 USB Ports
中文描述： 1A、限流開關(guān)，支持兩個(gè)USB口
文件頁(yè)數(shù)： 3/8頁(yè)
文件大小： 711K
代理商： MAX1922
M
1A Current-Limited Switch for 2 USB Ports
_______________________________________________________________________________________
3
Note 1:
Specifications to -40°C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS
(V
IN
= 5V,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 1)
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 5V,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
1
13
UNITS
μA
ms
OC
Off-State Current
OC
Blanking Timeout Period
THERMAL SHUTDOWN
Thermal Shutdown Threshold
V
IN
= V
OC
= 5V
From overcurrent condition to
OC
assertion
t
BL
6
10
165
°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OPERATING CONDITION
Input Voltage
POWER SWITCH
V
IN
3.0
5.5
V
V
IN
= 4.4V to 5.5V
V
IN
= 3V
I
LOAD
= 400mA
I
LOAD
= 400mA
125
150
200
20
Switch Static Drain-Source
On-State Resistance
R
DS(ON)
m
Switch Turn-On Time
Switch Turn-Off Time
ENABLE INPUT (
EN
)
t
ON
t
OFF
μs
μs
1
V
IN
= 3.0V to 3.6V
V
IN
= 3.7V to 5.5V
V
IN
= 3.0V to 5.5V
V
EN
= V
IN
or GND
2.0
2.4
EN
High-Level Input Voltage
V
IH
V
EN
Low-Level Input Voltage
EN
Input Current
CURRENT LIMIT
Overload Output Current
Short-Circuit Output Current
SUPPLY CURRENT
Supply Current, Low-Level Input
V
IL
0.8
1
V
μA
-1
I
LIMIT
I
SC
Force V
OUT
to 4.5V
OUT shorted to GND
1.2
2.3
1.5
A
A
V
EN
= V
IN
= V
OUT
= 5.5V
2
μA
Supply Current, High-Level
Input
I
Q
V
EN
= GND, I
OUT
= 0, timer not running
25
μA
Supply Leakage Current
V
EN
= V
IN
= 5.5V, V
OUT
= GND
15
μA
UNDERVOLTAGE LOCKOUT
Undervoltage Lockout
OVERCURRENT (
OC
)
OC
Threshold
OC
Output Low Voltage
OC
Off-State Current
OC
Blanking Timeout Period
UVLO
Rising edge, 100mV hysteresis
2.0
2.9
V
1.1
A
V
μA
ms
V
OL
I
SINK
= 1mA, V
IN
= 3V
V
IN
= V
OC
= 5V
From overcurrent condition to
OC
assertion
0.4
1
14
t
BL
6
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