AP1202
Dual USB High-Side Power Switch
Features
- Compliant to USB specifications
- Dual independent switches control
- 2.7V to 5.5V input voltage
- 500mA minimum continuous current per port
- 110mΩ typical on-resistance
- 0.75A maximum short circuit current limit
- Independent open-drain fault flag pins
- 110μA typical on-state supply current
- 1μA typical off-state supply current
- Output can be forced higher than input (off-state)
- Thermal shutdown
- 2.4V typical under voltage lockout (UVLO)
- 1ms turn-on (soft-start) and fast turn-off
- Enable active-high (H) or active-low (L)
- 8-pin SOP and PDIP packages
General Description
The AP1202 series are dual integrated high-side
power switch with independent enable and flag
functions, optimized for self-powered and
bus-powered
Universal
Serial Bus
(USB)
applications. The AP1202 series support the
following USB requirements: each switch channel
supplies up to 500mA as required by USB
downstream devices; the switch’s low on-resistance
meets USB voltage drop requirements; fault current
is limited to typically 650mA, well below the UL
25VA safety requirements; and a flag output is
available to indicate fault conditions to the local
USB controller. Soft start eliminates the momentary
voltage drop on the upstream port that may occur
when the switch is enabled in bus-powered
applications.
Additional features include thermal shutdown to
prevent catastrophic switch failure from high-current
loads, under voltage lockout (UVLO) to ensure that
the device remains off unless there is a valid input
voltage present, and 3.3V and 5V logic compatible
enable inputs.
Applications
•
•
•
USB hubs
Hot plug-in power supplies
Battery-charger circuits
Pin Assignments
(Top View)
Pin Descriptions
Name
EN1
EN2
FLG1
FLG2
GND
IN
OUT1
OUT2
Description
Enable: Logic-compatible enable
input. ( H: active high, L: active low).
Do not float.
Fault Flag: Active-low, open-drain
output. Indicates over current,
UVLO, and thermal shutdown.
Supply return.
Supply Input: Output MOSFET drain.
Also supplies IC’s internal circuitry.
Connect to positive supply.
Switch Output: Output MOSFET
source. Typically connect to
switched side of load.
EN1 1
FLG1 2
FLG2 3
EN2 4
PDIP/SOP
AP1202
8 OUT1
7 IN
6 GND
5 OUT2
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.4
1/11
Feb.10, 2004
AP1202
Dual USB High-Side Power Switch
Operating Ratings
(Note 2)
Symbol
V
IN
T
A
Θ
JA
Θ
JA
Parameter
Supply Voltage
Ambient Operating Temperature
Thermal Resistance SOIC
Thermal Resistance DIP
Rating
+2.7 to +5.5
-40 to +85
120
100
Unit
V
oC
oC/W
oC/W
Electrical Characteristics
(Under Operating Conditions) V
Symbol
I
CC
V
IT
I
EN
C
EN
R
DS(ON)
T
OND
T
R
T
OFFD
T
F
I
LEAK
I
OUT
I
OS
I
LIM
T
TS
R
FO
I
FOH
UVLO
Parameter
Supply Current
Enable Input Threshold
Enable Input Current
Enable Input Capacitance
Switch Resistance
Output Turn-On Delay
Output Turn-On Rise Time
Output Turnoff Delay
Output Turnoff Fall Time
Output Leakage Current
Continuous Load Current
Short-circuit Current Limit
Current-Limit Threshold
Over-temperature
Shutdown Threshold
Error Flag Output
Resistance
Error Flag Off Current
UVLO Threshold
IN
=+5V; T
A
=25oC; unless noted.
Conditions
switch off, OUT = open (Note 4)
all switches on, OUT = open
(Note 4)
(Note 4)
V
EN
=0V to 5.5V
V
IN
=2.7V ~ 5.5V, I
OUT
=500mA,
each switch
R
L
=10Ω each output
R
L
=10Ω each output
R
L
=10Ω each output
R
L
=10Ω each output
each output (output disabled)
each output
Each output (enable into load),
Ramped load applied to
enabled output
T
J
increasing
T
J
decreasing
V
IN
= 5V, I
L
= 10mA
V
IN
= 3.3V, I
L
= 10mA
V
FLAG
= 5V
V
IN
= increasing
V
IN
= decreasing
Min.
Typ.
0.50
110
Max.
5
160
2.40
1
140
Unit
µA
µA
V
µA
pF
mΩ
µS
mS
µS
µS
µA
A
A
A
oC
oC
0.8
-1
1.7
±
0.01
1
110
30
1
0.5
0.5
10
10
10
0.7
0.90
0.6
0.50
0.60
0.6
0.75
140
130
10
15
0.01
2.5
2.3
25
40
1
Ω
Ω
µA
V
V
Note 1.
Exceeding the absolute maximum rating may damage the device.
Note 2.
The device is not guaranteed to function outside its operating rating.
Note 3.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Note 4.
Off is V
EN
≦0.8Vand
on is V
EN
≧2.4V
for the AP1202H. Off is V
EN
≧2.4V
and on is V
EN
≦0.8V
for the AP1202L.
Anachip Corp.
www.anachip.com.tw
3/11
Rev 0.4
Feb.10, 2004
Embedded System
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