US201AHL-AF5-R [UTC]
Buffer/Inverter Based Peripheral Driver;
| 型号： | US201AHL-AF5-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | Buffer/Inverter Based Peripheral Driver 驱动 接口集成电路 |
| 文件： | 总7页 (文件大小：272K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
US201/A/B/C
CMOS IC
HIGH-SIDE POWER SWITCHES
WITH FLAG
DESCRIPTION
The UTC US201/A/B/C series are 80mΩ high-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 80mꢀ which 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
* 80mꢀ(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
Package
SOT-25
Packing
Tape Reel
Lead Free
Halogen Free
US201XXG-AF5-R
US201XXL-AF5-R
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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QW-R502-302.I
US201/A/B/C
CMOS IC
MARKING
4
3
5
Current Code:
1: 0.6A, A: 1.1A,
B: 1.3A, C: 1.5A
US
G: Halogen Free
L : Lead Free
Logic Level Enable Pin
1
2
PIN CONFIGURATION
VIN
4
VOUT
5
1
2
3
CTL GND
FLG
PIN DESCRIPTION
PIN NO
PIN NAME
CTL
DESCRIPTION
1
2
3
4
5
Enable Input pin, H: High active, L: Low active
Ground
GND
FLG
Open-drain fault flag output
Power input voltage
VIN
VOUT
Output voltage
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
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US201/A/B/C
CMOS IC
ABSOLUTE MAXIMUM RATING(TA=25°С, unless otherwise specified)
PARAMETER
SYMBOL
VCC
RATINGS
6.5
UNIT
V
V
V
V
Supply Voltage
+2 ~ +5.5 (Note 2)
-0.3~ +6.5
VCTL
VFLG
VCTL
0 ~ +5.5 (Note 2)
Input/Output Pins
V
FLG
6.5
150
V
℃
℃
℃
Junction Temperature
Storage Temperature
TJ
TSTG
-20 ~ +100 (Note 2)
-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
SYMBOL
RATINGS
260
UNIT
℃/W
Junction to Ambient
Junction to Case
θJA
℃/W
θJC
81
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
ENABLE INPUT
Low
VIL
VIH
VIN=2V~5.5V, Switch OFF
VIN=2V~5.5V, Switch ON
VCTL=0V~5.5V
0.8
V
V
CTL Threshold
High
2.0
1.0
CTL Input Current
II(CTL)
0.01
µA
UNDER VOLTAGE LOCK
US201/ US201A
US201B/ US201C
2.1
2.5
0.1
2.9
V
V
Under-Voltage Lockout
VUVLO
VIN increasing
Under-Voltage Hysteresis
∆VUVLO VIN decreasing
SUPPLY CURRENT
ISW(ON) Switch on, VOUT=OPEN
ISW(OFF) Switch off, VOUT=OPEN
IO(LEAK) VCTL=0V, RLOAD=0ꢀ
25
0.1
0.5
45
1
µA
µA
µA
Supply Current
Output Leakage Current
10
CURRENT LIMIT
US201
0.6
1.1
1.3
1.5
0.8
1.5
1.7
2.0
0.8
1.0
1.0
1.3
1.1
1.9
2.1
2.4
A
A
A
A
A
A
A
A
US201A
US201B
US201C
US201
Current Limit
ILIMIT
US201A
US201B
US201C
V
OUT=0V, measured prior to
Short Circuit Fold-Back Current
ISC(FB)
thermal shutdown
POWER SWITCH
IOUT= 500mA
US201
80
80
110 mꢀ
110 mꢀ
µs
Switch ON Resistance
RDS(ON)
IOUT=1.0A
US201A/B/C
tON RISE
(
)
Output Turn-ON Rise Time
OVER CURRENT FLAG
FLAG OFF Current
10% ~ 90% of VOUT rising
400
IFLG(OFF)
V
FLG =5V
0.01
20
1
µA
ꢀ
R
FLG
FLAG Output Resistance
I
SINK=1mA
400
15
FLAG Delay Time
tD
2
10
ms
From fault condition to FLG assertion
THERMAL SHUTDOWN
UNISONIC TECHNOLOGIES CO., LTD
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US201/A/B/C
CMOS IC
℃
℃
Thermal Shutdown Protection
TSD
130
20
Thermal Shutdown Hysteresis
∆TSD
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US201/A/B/C
CMOS IC
TEST CIRCUIT
RFG
VIN
VIN
FLG
VFLG
S1
A
UTC
US201/A/B/C
CI
VOUT
Chip
Enable
VOUT
CTL
GND
IOUT
IL
CO
RL
Fig.1 Turn-On & Off Response, Flag Response
ISupply
A
VFLG
VIN
FLG
VIN
CIN
UTC
US201/A/B/C
ILEAK AGE
VOUT
A
Chip
Enable
EN
RL
GND
Fig.2 Supply Current
VRDS(ON)
V
IOUT
VOUT
VIN
VIN
CIN
COUT
UTC
US201/A/B/C
Chip
Enable
FLG
EN
GND
Fig.3 On-Resistance
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US201/A/B/C
CMOS IC
TEST CIRCUIT
RFG
VIN
FLG
VFLG
UTC
US201/A/B/C
CI
VOUT
VIN
VOUT
CTL
GND
VCTL
IL
CO
RL
Fig.4 UVLO at Rising & Falling
S2
CI
RFG
VIN
FLG
VFLG
UTC
US201/A/B/C
VOUT
VIN
IOUT
A
VOUT
CTL
GND
S3
IL
CO
RL
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
Fig.2
Turn-On Rising & Falling Time vs. Temperature, Turn-On & Off Response, Flag Response.
Supply Current vs. Input Voltage & Temperature, Switch Off Supply Current vs. Temperature, Turn-Off
Leakage Current vs. Temperature.
Fig.3
Fig.4
On-Resistance vs. Input Voltage & Temperature.
EN Threshold Voltage vs. Input Voltage & Temperature, Flag Delay Time vs. Input Voltage &
Temperature, UVLO Threshold vs. Temperature, UVLO at Rising & Falling.
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.
Fig.5
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US201/A/B/C
CMOS IC
TYPICAL APPLICATION CIRCUIT
Pull-Up Resistor (10K ~ 100K)
USB
Flag Transient Filtering
10K
Controller
RFG
Supply Voltage 5V
Over -
Current
VIN
FLG
0.1µF
UTC
US201/A/B/C
1µF
VBUS
D+
D-
VOUT
CTL
Chip Enable
GND
10µF
150µF
GND
Data
Ferrite Beades
Note. A low-ESR 150μF aluminum electrolytic or tantalum between VOUT and GND is strongly recommended to meet
the 330mV maximum droop requirement in the hub VBUS
.
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
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