UNISONIC TECHNOLOGIES CO., LTD
US3075-US3375
POWER DISTRIBUTION SWITCH
DESCRIPTION
The UTC
US3075-US3375
is a power distribution switch. It
particularly designed for self-powered and bus-powered Universal
Serial Bus (USB) applications.
The R
DS(ON)
of the MOSFET switch is as low as 100mΩ. OC is
open-drain output report over-current or over-temperature event
which has deglitch typical 9ms timeout period typically 9ms.
The UTC
US3075-US3375
incorporates protection circuits
including current limiting circuit with foldback function, thermal
shutdown circuit designed to prevent catastrophic switch failure due
to increasing power dissipation when continuous heavy loads or short
circuit occurs. Besides, a built-in charge pump is used to drive the
N-channel MOSFET that is free of parasitic body diode to eliminate
any reversed current flow across the switch when it is powered off.
The UTC
US3075-US3375
is applied in high-side power
protection switch, USB power management, USB host and
self-powered bubs, USB bus-powered hubs, hot plug-in power
supplies, battery-charger circuits.
CMOS IC
FEATURES
* Operating on The Range of 3V to 5.5V
* High-Side MOSFET with 100mΩ R
DS(ON)
(TYP.)
* Quiescent Supply Current: 65μA
* Available With 4 Versions of Current Limits with Foldback
* Rise Time: 400μS (TYP.)
* UVLO (Under Voltage Lockout)
* Output Shutdown Pull-low Resister
* Shutdown Supply Current: 1μA (MAX.)
* Logic Level Enable Pin, Available with Active-High or Active-Low Version
* Reverse Current is Not Generated when in Power Off State
* Deglitched Open-Drain Over-Current Flag Output ( OC )
ORDERING INFORMATION
Ordering Number
Lead Free
US3X75XL-S08-R
US3X75XL-S08-T
US3X75XL-SM1-R
US3X75XL-SM1-T
Halogen Free
US3X75XG-S08-R
US3X75XG-S08-T
US3X75XG-SM1-R
US3X75XG-SM1-T
Package
SOP-8
SOP-8
MSOP-8
MSOP-8
Packing
Tape Reel
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
1 of 9
QW-R502-423.E
US3075-US3375
PIN CONFIGURATION
GND 1
IN 2
IN 3
EN(EN) 4
8 OUT
7 OUT
6 OUT
5 OC
CMOS IC
PIN DESCRIPTION
PIN NO
1
2,3
4
5
6,7,8
PIN NAME
DESCRIPTION
GND
Ground
Input Supply: Output MOSFET Drain, which also supplies IC's internal circuitry.
IN
Connect to positive supply.
EN(
EN
) Enable: Logic level enable input. Make sure EN pin never floating.
OC
OUT
Over-Current: Open-Drain OC output.
Switch Output: Output MOSFET Source of switch. Typically connect to switched side of load.
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 9
QW-R502-423.E
US3075-US3375
ABSOLUTE MAXIMUM RATING
CMOS IC
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V
IN
6
V
Output Voltage
V
OUT
6
V
Output Current
I
OUT
Internally Limited
A
Enable Input
V
EN
-0.3 ~ 6
V
Storage Temperature
T
STG
-65~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
OPERATING RATINGS
PARAMETER
Supply Voltage
Ambient Operating Temperature
SYMBOL
V
IN
T
OPR
RATINGS
+3 ~ +5.5
-40~ +85
UNIT
V
°C
ELECTRICAL CHARACTERISTICS
(V
IN
=5V, C
IN
=1µF, C
OUT
=1µF, R
L
=10Ω, T
A
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Input Voltage
V
IN
US3375, I
OUT
=1.5A
US3275, I
OUT
=1A
Output MOS R
DS(ON)
US3175, I
OUT
=0.5A
US3075, I
OUT
=0.3A
Supply Current
I
IN
Output Turn-on Rising Time
R
L
=10Ω, 90% Settling
US3075
US3175
Current Limit Threshold
I
THD(LIMIT)
V
OUT
=4V
US3275
US3375
US3075
US3175
V
OUT
=0V,
Short-Circuit Current
I
SC
2.7V<V
IN
<5.5 V
US3275
US3375
EN Input Threshold
Shutdown Supply Current
I
SHDN
Shutdown Pull Low Resistance
Output Leakage Current
I
O(LEAK)
EN=”0”, V
OUT
=0V
V
IN
Under Voltage Lockout
V
IN
Under Voltage Hysteresis
Thermal Limit
Thermal Limit Hysteresis
OC Deglitch
OC Output Low Voltage
OC Off-State Current
OC assertion or deassertion
I
OC
= 5mA
V
OC
= 5V
MIN
3
TYP
MAX UNIT
5.5
V
130
mΩ
µA
µs
A
A
A
A
A
A
A
A
V
µA
Ω
µA
V
mV
°C
°C
ms
V
µA
100
65
400
0.75
1
1.5
2
0. 5
0.67
1
1.3
1.6
0.1
75
0.5
2.5
200
135
20
9
0.5
0.7
1.1
1.5
0.2
0.2
0.2
0.2
1.3
2.2
1.4
1.7
2.1
2.8
0.7
1
1.4
1.9
1.8
1
150
1
3
4
15
0.4
1
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 9
QW-R502-423.E
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