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US3075 の電気的特性と機能

US3075のメーカーはUnisonic Technologiesです、この部品の機能は「POWER DISTRIBUTION SWITCH」です。


製品の詳細 ( Datasheet PDF )

部品番号 US3075
部品説明 POWER DISTRIBUTION SWITCH
メーカ Unisonic Technologies
ロゴ Unisonic Technologies ロゴ 




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US3075 Datasheet, US3075 PDF,ピン配置, 機能
UNISONIC TECHNOLOGIES CO., LTD
US3075-US3375
POWER DISTRIBUTION SWITCH
CMOS IC
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 100m. 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.
FEATURES
* Operating on The Range of 3V to 5.5V
* High-Side MOSFET with 100mRDS(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
US3X75XG-S08-R
US3X75XG-SM1-R
US3X75XG-P08-R
Package
SOP-8
MSOP-8
TSSOP-8
SOP-8
TSSOP-8
MSOP-8
Packing
Tape Reel
Tape Reel
Tape Reel
US3X75 X G-S08-R
(1) Packing Type
(2) Package Type
(3) Green Package
(4) Logic Level Enable Pin
(5) Output Current
(1) R: Tape Reel
(2) S08: SOP-8, SM1: MSOP-8, P08: TSSOP-8
(3) G: Halogen Free and Lead Free
(4) H: Active High, L: Active Low
(5) 0: 0.5A, 1: 0.7A, 2: 1.1A, 3: 1.5A
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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US3075 pdf, ピン配列
US3075-US3375
BLOCK DIAGRAM
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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US3075 電子部品, 半導体
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
www.unisonic.com.tw
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共有リンク

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部品番号部品説明メーカ
US3075

POWER DISTRIBUTION SWITCH

Unisonic Technologies
Unisonic Technologies
US3076

DUAL USB HIGH-SIDE POWER SWITCH

Unisonic Technologies
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