Datasheet

UNISONIC TECHNOLOGIES CO., LTD
US204
Preliminary
CMOS IC
100mΩ, 1/1.5A HIGH-SIDE
POWER SWITCHES WITH FLAG
„
DESCRIPTION
The UTC US204 series are 100mΩ high-side power switches.
There are internal duel low voltage N-Channel MOSFETS which
whish is ideal all USB applications. These MOSFETS is driven by a
charge pump circuitry inside, these switches on resistance are as
low as 100mΩ which and meet the drop voltage for USB
applications.
The flag pins output an open-drain fault flag to next controller.
There’re lots internal special ways for protecting the chip’s
operation. There are also built-in protection circnits to ensure the
chips function normally.
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, 2.1V typ.) can make sure the chip is in the
off state.
Because of the requirement of USB power, the fault current
should be ensured to be less than 1.5A for UTC US204AH/AL and
1.0A for UTC US204CH/CL.
„
SOP-8
FEATURES
* 100mΩ(Typ) N-Channel MOSFET
* Supply Current:
– Switch On : 60μA (Typ)
– Switch Off : 1μA (Typ)
* Load Current 1.5A for US204AH/AL and 1.0A for US204CH/CL
* Input Voltage from 2V ~ 5.5V
* In Off-State: Output Voltage can be Higher than Input
„
RDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
US204XXL-S08-R
US204XXG-S08-R
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
Package
Packing
SOP-8
Tape Reel
1 of 6
QW-R502-601.a
US204
Preliminary
„
PIN CONFIGURATION
„
PIN DESCRIPTION
CMOS IC
PIN NO
1
2
3
4
PIN NAME
GND
VIN
CTL1
CTL2
DESCRIPTION
Ground
Power input voltage
Chip Enable turns on power switch in VOUT1.
Chip Enable turns on power switch in VOUT2.
5
FLG2
VOUT2
VOUT1
Over current or over temperature status output, open-drain output, active low, in VOUT2.
6
7
8
FLG1
Over current or over temperature status output,, open-drain output, active low, in VOUT1.
Power-Switch Output, in VOUT2.
Power-Switch Output, in VOUT1.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R502-601.a
US204
„
Preliminary
CMOS IC
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R502-601.a
US204
„
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING(Ta=25°С, unless otherwise specified)
PARAMETER
RATINGS
UNIT
6.0
V
Supply Voltage
VCC
+2 ~ +5.5 (Note 2)
V
-0.3~ +6.0
V
CTL
VCTL
Input/Output Pins
0 ~ +5.5 (Note 2)
V
FLG
V FLG
6.0
V
Power Dissipation (Ta=25°С)
PD
0.3
W
150
℃
Junction Temperature
TJ
-20 ~ +100 (Note 2)
℃
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.
„
SYMBOL
ELECTRICAL CHARACTERISTICS
PARAMETER
ENABLE INPUT
CTL Threshold
SYMBOL
Low
High
CTL Input Current
UNDER VOLTAGE LOCK
Under-Voltage Lockout
Under-Voltage Hysteresis
SUPPLY CURRENT
II(CTL)
Supply Current
Output Leakage Current
CURRENT LIMIT
Current Limit
Short Circuit Fold-Back Current
VIL
VIH
US204Ax
US204Cx
US204Ax
US204Cx
TEST CONDITIONS
VIN=2V~5.5V, Switch OFF
VIN=2V~5.5V, Switch ON
VCTL=0V~5.5V
MIN
TYP MAX UNIT
0.8
0.01
V
V
µA
V
V
2.0
VUVLO
∆VUVLO
VIN increasing
VIN decreasing
2.1
0.1
ISW(ON)
ISW(OFF)
IO(LEAK)
Switch on, VOUT=OPEN
Switch off, VOUT=OPEN
VCTL=0V, RLOAD=0Ω
65
0.1
0.5
90
1
1
µA
µA
µA
2.8
2.1
A
A
A
A
ILIMIT
VOUTX=4V
1.5
1.1
ISC(FB)
VOUT=0V, measured prior to
thermal shutdown
2.0
1.5
1.4
1.0
100
100
400
110
110
tON(RISE)
IOUT=1.3A, VIN=5V,Each Channel
IOUT= 1A, VIN=5V,Each Channel
10% ~ 90% of VOUT rising
mΩ
mΩ
µs
I FLG(OFF)
RFLG
V FLG =5V
ISINK=1mA
0.01
20
1
400
µA
Ω
12
15
ms
POWER SWITCH
Switch ON Resistance
US204Ax
US204Cx
Output Turn-ON Rise Time
OVER CURRENT FLAG
FLAG OFF Current
FLAG Output Resistance
FLAG Delay Time
THERMAL SHUTDOWN
Thermal Shutdown Protection
Thermal Shutdown Hysteresis
RDS(ON)
tD
TSD
∆TSD
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
From fault condition to FLG
assertion
5
130
20
℃
℃
4 of 6
QW-R502-601.a
US204
„
Preliminary
CMOS IC
TEST CIRCUIT
RFG
VIN
VIN
VFLG
S1
UTC
US204
CI
Chip
Enable
FLG
CTL
GND
VOUT
A
IOUT
VOUT
CO
RL
IL
Turn-On & Off Response, Flag Response
S2
RFG
VIN
VIN
FLG
VFLG
UTC
US204
CI
CTL
GND
VOUT
VOUT
CO
IOUT
A
S3
RL
IL
Current Limit vs. Input Voltage, Inrush Current Response,
Current Limit Transient Response
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R502-601.a
US204
„
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
VCC
5.0V
Ferrite
Bead
10k
33μF
10k
4.50V 5.25V
Upstream VBUS
100mA max
VBUS
D+
USB Controller
LDO
VBUS
IN
VIN
OUT
UTC US204
GND
FLG1
Overcurrent
VIN
VOUT1
Overcurrent
CTL1
VOUT2
ON
CTL2
FLG2
ON/OFF
+
0.01μF
33μF
D-
USB
Port1
GND
D+
D-
GND
1μF
1μF
GND
0.1μF
VBUS
GND
D+
+
0.01μF
33μF
D-
USB
Port2
GND
DATA
DATA
(Two Pair)
to USB Controller
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
www.unisonic.com.tw
6 of 6
QW-R502-601.a
Similar pages