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US3075XG-S08-R [UTC]

POWER DISTRIBUTION SWITCH; 配电开关
US3075XG-S08-R
型号： US3075XG-S08-R
厂家： Unisonic Technologies    Unisonic Technologies
描述：

POWER DISTRIBUTION SWITCH
配电开关

开关
文件： 总10页 (文件大小：549K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
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UNISONIC TECHNOLOGIES CO., LTD  
US3075-US3375  
CMOS IC  
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 RDS(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.  
SOP-8  
„
FEATURES  
* Operating on The Range of 2.7V to 5.5V  
* High-Side MOSFET with 100mΩ RDS(ON)  
* 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  
Package  
Packing  
Lead Free  
Halogen Free  
US3075XL-S08-R  
US3175XL-S08-R  
US3275XL-S08-R  
US3375XL-S08-R  
US3075XG-S08-R  
US3175XG-S08-R  
US3275XG-S08-R  
US3375XG-S08-R  
SOP-8  
SOP-8  
SOP-8  
SOP-8  
Tape Reel  
Tape Reel  
Tape Reel  
Tape Reel  
www.unisonic.com.tw  
Copyright © 2011 Unisonic Technologies Co., Ltd  
1 of 10  
QW-R502-423.C  
US3075-US3375  
CMOS IC  
„
PIN CONFIGURATION  
1
8
7
GND  
OUT  
OUT  
IN 2  
IN 3  
6 OUT  
OC  
EN(EN)  
4
5
„
PIN DESCRIPTION  
PIN NO  
1
PIN NAME  
GND  
DESCRIPTION  
Ground  
Input Supply: Output MOSFET Drain, which also supplies IC's internal circuitry.  
Connect to positive supply.  
2,3  
IN  
4
5
Enable: Logic level enable input. Make sure EN pin never floating.  
Over-Current: Open-Drain OC output.  
EN(EN )  
OC  
6,7,8  
OUT  
Switch Output: Output MOSFET Source of switch. Typically connect to switched side of load.  
UNISONIC TECHNOLOGIES CO., LTD  
2 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
BLOCK DIAGRAM  
UNISONIC TECHNOLOGIES CO., LTD  
3 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
ABSOLUTE MAXIMUM RATING  
PARAMETER  
SYMBOL  
VIN  
RATINGS  
UNIT  
V
Supply Voltage  
Output Voltage  
Output Current  
Enable Input  
6
6
VOUT  
IOUT  
V
Internally Limited  
-0.3 ~ 6  
A
VEN  
V
Storage Temperature  
TSTG  
-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  
SYMBOL  
VIN  
RATINGS  
+3 ~ +5.5  
-40~ +85  
UNIT  
V
Supply Voltage  
Ambient Operating Temperature  
TOPR  
°C  
„
ELECTRICAL CHARACTERISTICS  
(VIN=5V, CIN=1µF, COUT=1µF, RL=10Ω,TA=25°C, unless otherwise specified)  
PARAMETER  
SYMBOL  
VIN  
TEST CONDITIONS  
MIN TYP MAX UNIT  
Input Voltage  
2.7  
5.5  
V
US3375, IOUT =1.5A  
US3275, IOUT=1A  
US3175, IOUT=0.5A  
US3075, IOUT=0.3A  
Output MOS RDS(ON)  
100  
115  
mΩ  
Supply Current  
IIN  
65  
400  
0.75  
1
µA  
µs  
A
Output Turn-on Rising Time  
RL=10Ω, 90% Settling  
US3075  
0.5  
0.7  
1.1  
1.5  
0.2  
0.2  
0.2  
0.2  
1.3  
1.4  
1.7  
2.1  
2.8  
0.7  
1
US3175  
VOUT=4V  
US3275  
A
Current Limit Threshold  
Short-Circuit Current  
ITHD(LIMIT)  
1.5  
2
A
US3375  
US3075  
A
0. 5  
0.67  
1
A
US3175  
US3275  
US3375  
V
OUT=0V,  
A
ISC  
2.7V<VIN<5.5 V  
1.4  
1.9  
1.8  
1
A
1.3  
1.6  
0.1  
75  
A
EN Input Threshold  
V
Shutdown Supply Current  
Shutdown Pull Low Resistance  
Output Leakage Current  
VIN Under Voltage Lockout  
VIN Under Voltage Hysteresis  
Thermal Limit  
ISHDN  
µA  
Ω
150  
1
IO(LEAK)  
EN=”0”, VOUT=0V  
0.5  
2.5  
200  
135  
20  
µA  
V
2.2  
4
2.7  
mV  
°C  
°C  
Thermal Limit Hysteresis  
9
15  
0.4  
1
ms  
V
OC Deglitch  
OC assertion or deassertion  
IOC = 5mA  
OC Output Low Voltage  
OC Off-State Current  
VOC = 5V  
µA  
UNISONIC TECHNOLOGIES CO., LTD  
4 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
TEST CIRCUIT  
VOUT  
IOUT  
Device Under Test  
OUT  
RL  
CL  
IL  
COUT  
Current Probe  
UNISONIC TECHNOLOGIES CO., LTD  
5 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
TYPICAL APPLICATION CIRCUIT  
Power Supply  
2.7V ~ 5.5V  
IN  
OC  
OUT  
Load  
1μF  
EN(EN)  
0.1μF  
22μF  
ON  
OFF  
UNISONIC TECHNOLOGIES CO., LTD  
6 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
FUNCTIONAL DESCRIPTION  
Input and Output  
IN pin (Input) is the power supply connection to the logic circuitry and the drain of the output MOSFET. OUT pin  
(Output) is the source of the output MOSFET. In a typical application, current flows through the switch from input to  
output toward the load. Both OUT pins must be connected together to the load.  
Thermal Shutdown  
Thermal shutdown is designed to prevent this device from being damaged due to excessive power dissipation. It is  
used to turn off the output MOSFET when the if the temperature is higher than135°C, 20°C of hysteresis prevents  
the switch turn on until the die temperature drops to 115°C. Thermal shutdown circuit functions only when the switch  
is enabled.  
Under Voltage Lockout  
UVLO (Under voltage Lockout) turns off the MOSFET switch once the input voltage falls below 2.3V (TYP.) and if  
the input voltage exceeds 2.5V (TYP.), the switch will be turned on. UVLO detection functions only when the switch  
is enabled.  
Current Limiting  
The current limit value is fixed internally, typically 2A, 1.5A, 1A, 0.75A for US3375/ US3275/ US3175/ US3075  
respectively. There is foldback of current limit When VOUT is less than 1.5V, there is foldback of current limit.  
OC Function  
The OC open-drain output is asserted (active low) when an over current or over temperature shutdown condition  
is encountered after a 9-ms deglitch timeout. The output keeps asserted until the over current or over temperature  
condition is removed.  
„
APPLICATION INFORMATION  
Supply Filtering  
To avoid supply transients, 1μF bypass capacitor is strongly recommended to located between IN to GND.  
Without a bypass capacitor, an output short may cause sufficient ringing on the input (from supply lead inductance)  
to damage internal control circuitry.  
Input transients value must be not higher than the absolute maximum supply voltage (VIN max = 6V) even for a  
short duration.  
EN, the Enable Input  
The enable pin, EN, must be driven logic high or logic low for a clearly defined input. The input is not allowed to  
float, or unpredictable operation may be occurs. EN should not be allowed to go negative with respect to GND.  
UNISONIC TECHNOLOGIES CO., LTD  
7 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
TYPICAL CHARACTERISTICS  
(VIN= 5V, 3275H, CIN=1μF, COUT=1μF, VEN=0V, TA=25°C, unless otherwise specified.)  
Turn on delay time and rise time  
Turn off delay time and fall time  
8V  
6V  
8V  
6V  
4V  
2V  
VIN=5V  
CL=120μF  
RL=5Ω  
4V  
2V  
0
10V  
5V  
0
10V  
5V  
0
VIN=5V  
CL=120μF  
RL=5Ω  
0
0
2000  
4000  
0
5
10  
Time (400μs/div)  
Time (1ms/div)  
Inrush Current With Different  
Load Capacitance  
Inrush Current With Different  
Load Capacitance  
10V  
5V  
10V  
5V  
0
0
CL=120μF  
CL=10μF  
1A  
1A  
0.5A  
0.5A  
0
0
5V  
5V  
0
0
VIN=5V  
RL=5Ω  
VIN=5V  
RL=5Ω  
0
2000  
4000  
0
2000  
4000  
Time (400μs/div)  
Time (400μs/div)  
Inrush Current With Different  
Load Capacitance  
Thermal Shutdown Response  
VIN=5V  
10V  
CL=47μF  
RL=1Ω  
5V  
0
CL=220μF  
1A  
0.5A  
0
5V  
0
VIN=5V  
RL=5Ω  
0
5
10  
Time (1ms/div)  
UNISONIC TECHNOLOGIES CO., LTD  
8 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
TYPICAL CHARACTERISTICS (Cont.)  
UNISONIC TECHNOLOGIES CO., LTD  
9 of 10  
QW-R502-423.C  
www.unisonic.com.tw  
US3075-US3375  
CMOS IC  
„
TYPICAL CHARACTERISTICS (Cont.)  
UTC assumes no responsibility for equipment failures that result from using products at values that  
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or  
other parameters) listed in products specifications of any and all UTC products described or contained  
herein. UTC products are not designed for use in life support appliances, devices or systems where  
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in  
whole or in part is prohibited without the prior written consent of the copyright owner. The information  
presented in this document does not form part of any quotation or contract, is believed to be accurate  
and reliable and may be changed without notice.  
UNISONIC TECHNOLOGIES CO., LTD  
10 of 10  
QW-R502-423.C  
www.unisonic.com.tw  

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