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US201B の電気的特性と機能

US201BのメーカーはUnisonic Technologiesです、この部品の機能は「HIGH-SIDE POWER SWITCHES」です。


製品の詳細 ( Datasheet PDF )

部品番号 US201B
部品説明 HIGH-SIDE POWER SWITCHES
メーカ Unisonic Technologies
ロゴ Unisonic Technologies ロゴ 




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US201B Datasheet, US201B PDF,ピン配置, 機能
UNISONIC TECHNOLOGIES CO., LTD
US201/A/B/C
HIGH-SIDE POWER SWITCHES
WITH FLAG
DESCRIPTION
The UTC US201/A/B/C series are 80mhigh-side power
switches. There’s internal single low voltage N-Channel MOSFET
which makes it an ideal for all USB applications. This MOSFET
should be driven by a charge pump circuitry inside. Its switch on
resistance is as low as 80mwhich we know specially meets the
drop voltage for USB applications.
The flag pin can output an open-drain fault flag to next controller.
There’re lots internal special ways for protecting the chip’s
operation.
When in hot-plug events, there’s large current which can create
the upstream voltage droop to match the USB’s voltage droop
requirements and soft-start for isolating the power source.
As soon as the die temperature is higher than 130, the internal
shutdown circuit will work.
Only when there’s a normal input voltage in the VIN pin, the
UVLO (under-voltage lockout, 1.3V/2.5V typ.) can make sure the
chip is till in the off state.
Because of the requirement of USB power the fault current
should be ensured less than 0.6A/1.1A (UTC US201/A, single port)
and 1.3A /1.5A (UTC US201B/C, dual ports).
FEATURES
* 80m(Typ) N-Channel MOSFET
* Supply Current:
Switch On : 25μA(Typ)
Switch Off : 1μA (Typ)
* Load Current 500mA for US201 and 1.0A for US201A/B/C
* Input Voltage from 2V ~ 5.5V
* In Off-State: Output Voltage can be Higher than Input
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
US201XXL-AF5-R
US201XXG-AF5-R
Package
SOT-25
CMOS IC
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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US201B pdf, ピン配列
US201/A/B/C
CMOS IC
ABSOLUTE MAXIMUM RATING(TA=25°С, unless otherwise specified)
PARAMETER
Supply Voltage
Input/Output Pins
Junction Temperature
VCTL
V FLG
SYMBOL
VCC
VCTL
VFLG
TJ
RATINGS
6.5
+2 ~ +5.5 (Note 2)
-0.3~ +6.5
0 ~ +5.5 (Note 2)
6.5
150
-20 ~ +100 (Note 2)
UNIT
V
V
V
V
V
Storage Temperature
TSTG
-65 ~ +150
Notes:1. 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.
2. The device is not guaranteed to function when it’s beyond its operating conditions.
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
θJA
θJC
RATINGS
260
81
UNIT
/W
/W
ELECTRICAL CHARACTERISTICS
PARAMETER
ENABLE INPUT
CTL Threshold
CTL Input Current
Low
High
UNDER VOLTAGE LOCK
Under-Voltage Lockout
Under-Voltage Hysteresis
SUPPLY CURRENT
Supply Current
Output Leakage Current
CURRENT LIMIT
Current Limit
Short Circuit Fold-Back Current
POWER SWITCH
Switch ON Resistance
Output Turn-ON Rise Time
OVER CURRENT FLAG
FLAG OFF Current
FLAG Output Resistance
FLAG Delay Time
THERMAL SHUTDOWN
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
VIL
VIH
II(CTL)
VIN=2V~5.5V, Switch OFF
VIN=2V~5.5V, Switch ON
VCTL=0V~5.5V
0.8
2.0
0.01
V
V
µA
VUVLO
VUVLO
VIN increasing
VIN decreasing
US201/ US201A
US201B/ US201C
1.0 2.1 2.9
2.5
0.1
V
V
ISW(ON)
ISW(OFF)
IO(LEAK)
Switch on, VOUT=OPEN
Switch off, VOUT=OPEN
VCTL=0V, RLOAD=0
25 45 µA
0.1 1 µA
0.5 10 µA
ILIMIT
ISC(FB)
US201
US201A
US201B
US201C
US201
VOUT=0V, measured prior to US201A
thermal shutdown
US201B
US201C
0.6 0.8 1.1
1.1 1.5 1.9
1.3 1.7 2.1
1.5 2.0 2.4
0.8
1.0
1.0
1.3
A
A
A
A
A
A
A
A
RDS(ON)
tON(RISE)
IOUT= 500mA
IOUT=1.0A
10% ~ 90% of VOUT rising
US201
US201A/B/C
80 110 m
80 110 m
400 µs
I FLG(OFF)
RFLG
tD
VFLG =5V
ISINK=1mA
From fault condition to FLG assertion
0.01 1 µA
20 400
2 10 15 ms
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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US201B 電子部品, 半導体
US201/A/B/C
TEST CIRCUIT
VIN CI
VCTL
RFG
VIN FLG
UTC
US201/A/B/C
CTL
VOUT
GND
VFLG
VOUT
CO RL IL
Fig.4 UVLO at Rising & Falling
CMOS IC
S2
VIN CI
RFG
VIN FLG
UTC
US201/A/B/C
CTL
VOUT
GND
CO
IOUT
A
S3
VFLG
VOUT
RL IL
Fig.5 Current Limit vs. Input Voltage, Inrush Current Response,
Current Limit Transient Response
Note:
Above test circuits reflected the graphs shown on “Typical Operating Characteristics” are as follows:
Fig.1 Turn-On Rising & Falling Time vs. Temperature, Turn-On & Off Response, Flag Response.
Fig.2 Supply Current vs. Input Voltage & Temperature, Switch Off Supply Current vs. Temperature, Turn-Off
Leakage Current vs. Temperature.
Fig.3 On-Resistance vs. Input Voltage & Temperature.
Fig.4 EN Threshold Voltage vs. Input Voltage & Temperature, Flag Delay Time vs. Input Voltage &
Temperature, UVLO Threshold vs. Temperature, UVLO at Rising & Falling.
Fig.5 Current Limit vs. Input Voltage/Temperature, Short Circuit Current Response, Short Circuit Current vs.
Temperature, Inrush Current Response, Soft-start Response, Ramped Load Response, Current Limit
Transient Response, Thermal Shutdown Response.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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共有リンク

Link :


部品番号部品説明メーカ
US201

HIGH-SIDE POWER SWITCHES

Unisonic Technologies
Unisonic Technologies
US201A

HIGH-SIDE POWER SWITCHES

Unisonic Technologies
Unisonic Technologies
US201B

HIGH-SIDE POWER SWITCHES

Unisonic Technologies
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US201C

HIGH-SIDE POWER SWITCHES

Unisonic Technologies
Unisonic Technologies


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