UNISONIC TECHNOLOGIES CO., LTD
US3076-US3376
Preliminary
CMOS IC
DUAL USB HIGH-SIDE POWER
SWITCH
DESCRIPTION
The UTC
US3076-US3376
is an integrated dual channel for USB
high-side power 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 87mΩ. OC which
is open-drain output report over-current or over-temperature event, has
deglitch timeout period typically 9ms.
The UTC
US3076-US3376
incorporates some protection circuits,
such as current limiting circuit with foldback function, thermal shutdown
circuit which is designed to prevent catastrophic switch failure due to
increasing power dissipation when continuous heavy loads or short
circuit occurs. 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
US3076-US3376
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, and
battery-charger circuits.
FEATURES
* Operating on the Range of 2.7V to 5.5V
* High-Side MOSFET with 87mΩ R
DS(ON)
* Quiescent Supply Current: 65μA
* Available with 4 Versions of Current Limits with Foldback
* Rise Time: 400μS (TYP)
* UVLO (Under Voltage Lockout)
* Shutdown Supply Current: 1μA (MAX)
* Reverse Current is not Generated when in Power Off State
* Deglitched Open-Drain Over-Current Flag Output ( OC )
ORDERING INFORMATION
Ordering Number
Lead Free
US3X76XL-S08-R
US3X76XL-S08-T
US3X76XL-SM1-R
US3X76XL-SM1-T
Halogen Free
US3X76XG-S08-R
US3X76XG-S08-T
US3X76XG-SM1-R
US3X76XG-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
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PIN CONFIGURATION
GND 1
IN 2
EN1(EN1) 3
EN2(EN2) 4
Preliminary
CMOS IC
8 OC1
7 OUT1
6 OUT2
5 OC2
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
GND
IN
EN1(EN1)
EN2(EN2)
OC2
OUT2
OUT1
OC1
DESCRIPTION
Ground
Input Supply: Output MOSFET Drain, which also supplies IC's internal circuitry.
Connect to positive supply.
Enable: Logic level enable input of switch 1.
Make sure EN pin never floating.
Enable: Logic level enable input of switch 2.
Make sure EN pin never floating.
Over-Current: Open-Drain OC output of switch 2.
Switch Output: Output MOSFET Source of switch 2.
Typically connect to switched side of load.
Switch Output: Output MOSFET Source of switch 1.
Typically connect to switched side of load.
Over-Current: Open-Drain OC output of switch 1.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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ABSOLUTE MAXIMUM RATING
Preliminary
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
℃
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
US3376, I
OUT
= 1.5A
US3276, I
OUT
= 1.0A
Output MOS R
DS(ON)
US3176, I
OUT
= 0.5A
US3076, I
OUT
= 0.3A
Supply Current
I
IN
Output Turn-on Rising Time
R
L
=10Ω, 90% Settling
US3376
I
THD(LIMIT)
US3276
Current Limit Threshold
V
OUT
=4V
US3176
US3076
US3376
V
OUT
=0V,
US3276
Short-circuit Current
I
SC
2.7V<V
IN
<5.5 V
US3176
US3076
EN Input Threshold
Shutdown Supply Current
Output Leakage Current
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
I
SHDN
I
O(LEAK)
EN=”0”, V
OUT
=0V
2.1
2.3
200
135
20
9
MIN
2.7
TYP
MAX UNIT
5.5
V
103
150
2.8
2.1
1.7
1.4
1.9
1.4
1
0.7
2
1
1
2.65
mΩ
µA
µs
A
A
A
A
A
A
A
A
V
µA
µA
V
mV
°C
°C
ms
V
µA
87
90
400
2
1.5
1
0.75
1.3
1
0.67
0. 5
1.6
1.5
1.1
0.7
0.5
0.2
0.2
0.2
0.2
1.2
OC assertion or deassertion
I
OC
= 5mA,V
IN
=2.7V
5
15
0.2
1
V
OC
= 5V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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