AIMTRON AT1601B

AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
Features
General Description
•Built-In (Typical 110mΩ at 5.0V)
N-Channel MOSFET
•Output can be Forced Higher Than Input
(Off-State)
• Low Supply Current
100µA Typical On-State Current
1µA Typical Off-State Current
•1A minimum Continuous Load Current
•1.4A Typical Current Limit
•Open-Drain Fault Flag Output
•Hot Plug-In Application(Soft-Start)
•1.8V to 5.5V Operating Range
•1.7V Under-Voltage-Lockout(UVLO)
•Thermal Shutdown Protection
•SOP8 Package
The AT1601 is an integrated high-side power
switch optimized for self-powered and buspowered Universal Serial Bus (USB) applications.
With built-in a charge pump circuitry to drive the
internal MOSFET switch, the switch’s low onresistance meets USB voltage drop requirements.
A flag output is available to indicate fault
conditions to the local USB controller.
Applications
•High-Side Power Protection Switch
•USB Power Management
•Notebook, Motherboard PCs
The AT1601 includes soft-start to limit inrush
current during plug-in, 1.4A current limit to limit
the output current to a safe level which meet the
UL 25VA safety requirements, thermal shutdown
to prevent catastrophic switch failure from highcurrent loads, under voltage lockout (UVLO) to
ensure that the device remains off unless there is a
valid input voltage present, and an enable input
that is compatible with both 3.3V and 5V logic.
System Block
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
1
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
Ordering Information
Part Number
AT1601A
AT1601A_GRE
AT1601B
AT1601B_GRE
Package
SOP8
SOP8,Green
SOP8
SOP8,Green
Marking
AT1601AS
AT1601AS,date code with one bottom line
AT1601BS
AT1601BS,date code with one bottom line
EN
Active
High
Active
Low
Pin Assignment
Pin Description
Pin No.
Symbol
I/O
1
2
3
4,5
7
6,8
EN
FLG
GND
NC
IN
OUT
I
O
P
P
P
Description
Enable Input: AT1601A high active, AT1601B low active
Open-Drain Fault Flag Output
Ground
Input Power
Switch Output
Absolute Maximum Ratings
Item
Symbol
Ratings
Units
Storage temperature
Operating temperature
IN,OUT,FLG,EN input voltage
FLG Current
OUT Current
ESD Protection *
Thermal Resistance
Lead Temperature(Soldering. 10sec.)
TSTG
TOPR
-55〜+150
-30〜+85
-0.3〜+6.5
50
Internal Limited
2
160
260
℃
℃
V
mA
A
KV
°C/W
°C
IFLG
IOUT
(Human Body Mode)
θJA
*Devices are ESD protected, handling precaution are recommended.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
2
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
Recommended Operating Ratings
Item
Operating temperature
IN input voltage
EN input voltage
Symbol
Ratings
Units
TOPR
-20〜+85
1.8〜5.5
0〜5.5
℃
V
V
Electrical Characteristics
(VIN=5.0V, Ta=+250C)
Values
Parameter
Input Supply Current
Input Supply Current
EN Enable Threshold
EN Input Current
Symbol
IIN1
IIN2
Condition
Switch Off, OUT=Open
VIN=5.0V
Switch Off, OUT=Open
VIN=3.3V
Switch On, OUT=Open
VIN=5.0V
Switch On, OUT=Open
VIN=3.3V
-
1
8
µA
-
1
5
µA
-
120
160
µA
-
100
120
µA
-
0.5*VCC
V
VOL
High to Low Transition
0.4*VCC
-
-
V
EN=2.5V
-
0.01
1
µA
EN=1.0V
-
0.01
1
µA
1.5
1.7
-
V
-
0.1
-
V
IN=5V, IOUT=500mA
-
110
140
mΩ
IN=3.3V, IOUT=500mA
-
130
180
mΩ
1.0
1.4
2.0
A
-
1.0
-
A
IEN
∆UVLO IN Falling
OUT Turn-On Delay
Max.
-
UVLO Hysteresis
OUT Leakage Current
Typ.
Low to High Transition
VUVLO IN rising
Short Circuit Current
Limit
Short Circuit FoldBack
Current
Min.
VOH
UVLO Threshold
Switch Resistance
Unit
RON
ILimit
ISC
Enable into Load,
RLOAD=1Ω
RLOAD=0Ω, measure prior to
thermal shutdown
Ileakage
AT1601A
EN=0, RLOAD=0Ω
-
1
10
µA
Ileakage
AT1601B
EN=IN, RLOAD=0Ω
-
1
10
µA
RLOAD=10Ω
-
200
-
µs
tOn-D
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
3
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
OUT Turn-On Rise
Time
tOn-R
RLOAD=10Ω, CLOAD=100µF
-
0.3
-
ms
OUT Turn-Off Delay
tOff-D
RLOAD=10Ω
-
5
20
µs
OUT Turn-Off Fall
Time
tOff-F
RLOAD=10Ω, CLOAD=100µF
-
0.3
-
ms
RFLG
IN=5V, IFLG=10mA
-
10
25-
Ω
FLG Output Resistance
IN=3.3V, IFLG=10mA
-
15
40
Ω
FLG Off Current
IFLGL FLG=IN
-
0.01
1
µA
FLG Delay Time
tFLGL From fault to FLG assertion
8
12
15
ms
* For AT1601A, off is ≤2.0V and on is ≥2.5V. For AT1601B, off is ≥2.5V and on is
≤2.0V.(IN=5V)
Application Circuit
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
4
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
Typical Characteristics(VIN=5V,TA=25℃,AT1601A.)
CH1:EN CH2:FLG CH4:IOUT
CH1:EN CH2:FLG CH3:VOUTCH4:IOUT
FLG Delay waveform
Short Circuit Response
CH1:EN CH2:FLG CH3:VOUT
CH1:EN CH2:FLG CH3:VOUT
Turn-on Delay waveform
Turn-off Delay waveform
CH1:EN CH2:FLG CH3:Vout CH4:VIN
CH1:EN CH2:FLG CH3:Vout CH4:VIN
Power UP (UVLO)
Power Down (UVLO)
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
5
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
CH1:EN CH2:FLG CH3:Vout CH4:VIN
Turn-on CL=47uF
CH1:EN CH2:FLG CH3:Vout CH4:VIN
Turn-on CL=220uF
CH1:EN CH2:FLG CH3:Vout CH4:VIN
CH1:EN CH2:FLG CH3:Vout CH4:VIN
Turn-on CL=1000uF
Turn-on CL=6000uF
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
6
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
7
AT1601
Preliminary Product Information
USB High-Side Power Switches with Flag
Package Description: SOP8
SYMBOL
A
B
C
D
E
F
H
J
K
M
L
e1
α
INCHES
MIN
MAX
0.188
0.197
0.149
0.158
0.228
0.244
0.050
BSC
0.013
0.020
0.004
0.010
0.053
0.069
0.011
0.019
0.007
0.010
0.016
0.050
0.150 REF
450
0
80
0
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
5.80
6.20
1.27 BSC
0.33
0.51
0.10
0.25
1.35
1.75
0.28
0.48
0.19
0.25
0.40
1.27
3.81 REF
450
0
0
80
NOTES
-
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
8