NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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•
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
1.25A 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)
SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
General Description
The AP1212 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 AP1212 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 1000mA, 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
Typical Application Circuit
Power
Supply
3.3V
5V
7
0.1uF
2
FLG1
1
EN1
3
FLG2
4
EN2
OUT2
GND
6
IN
OUT1
AP1212
8
0.1uF
D+
D-
ferrite bead
VBUS
33uF
GND
ferrite bead
D+
D-
ferrite bead
VBUS
33uF
GND
ferrite bead
Downstream
USB Ports
USB
Control
5
0.1uF
AP1212 Rev. 8
DS31019
1 of 12
www.diodes.com
NOVEMBER 2010
©
Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Ordering Information
AP 1212 X S X - 13
Enable
H : Active High
L : Active Low
Device
AP1212XSL-13
AP1212XSG-13
Notes:
Package
S : SOP-8L
Lead Free
L : Lead Free
G : Green
Packing
13 : Tape & Reel
Package
Code
S
S
Packaging
(Note 2)
SOP-8L
SOP-8L
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
Pin Assignments
( Top View )
EN1
1
8 OUT1
7
IN
FLG1 2
AP1212
FLG2 3
EN2
4
6 GND
5 OUT2
SOP-8L
Pin Descriptions
Pin Name
EN1
EN2
FLG1
FLG2
GND
IN
OUT1
OUT2
AP1212 Rev. 8
DS31019
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.
2 of 12
www.diodes.com
NOVEMBER 2010
©
Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Block Diagram
OUT1
Power N-MOSFET
IN
Power N-MOSFET
NOVEMBER 2010
FLG1
Driver
EN1
Charge
Pump
Thermal
Shutdown
Thermal
Shutdown
Charge
Pump
Current
Limit
Driver
CS
Current
Limit
UVLO
CS
EN2
FLG2
OUT2
Test Circuit
(Note 3)
10K R1
10K R2
ON
OFF
V
CC
+5V
R3>=10
EN1
FLG1
OUT1
IN
C1
0.1uF
R4>=10
FLG2
ON
OFF
AP1212
Notes:
GND
OUT2
EN2
3. Before EN is asserted, a delay of 10ms minimum from when the supply voltage, Vcc, becomes stable must be allowed.
AP1212 Rev. 8
DS31019
3 of 12
www.diodes.com
©
Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Absolute Maximum Ratings
Symbol
ESD HBM
ESD MM
V
IN
V
FLG
I
FLG
V
OUT
V
EN
T
ST
MSL
(Note 4)
Parameter
Human Body Model ESD Protection (Note 5)
Machine Model ESD Protection (Note 5)
Supply Voltage
Fault Flag Voltage
Fault Flag Current
Output Voltage
Control Input Range
Storage Temperature
Moisture Sensitivity Level
Rating
500
150
+7
+7
50
+7
-0.3 to V
IN
+2
-65 to +150
3
Unit
V
V
V
V
mA
V
V
°C
-
Recommended Operating Conditions
Symbol
V
IN
T
A
Notes:
(Note 6)
Parameter
Supply Voltage
Operating Ambient Temperature
Min
2.7
-40
Max
5.5
125
Unit
V
o
C
4. Exceeding the absolute maximum rating may damage the device.
5. Devices are ESD sensitive. Handling precautions are recommended. Human Body model, tested per JEDEC 22-A114. Machine model, tested
per JEDEC 22-A115.
6. The device is not guaranteed to function outside its operating rating.
AP1212 Rev. 8
DS31019
4 of 12
www.diodes.com
NOVEMBER 2010
©
Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Electrical Characteristics
(Under the conditions of V
IN
=+5V and T
A
=25oC, unless otherwise specified)
Symbol
I
CC
V
IT
I
EN
C
EN
Parameter
Supply Current
Enable Input Threshold
Enable Input Current
Enable Input Capacitance
Conditions
Switch off, OUT = open (Note 7)
All switches on, OUT = open (Note 7)
(Note 7)
V
EN
= 0V to 5.5V
Min
0.8
-1
Typ.
0.50
110
1.7
±0.01
1
110
30
1
0.5
0.5
Max
5
160
2.40
1
140
Unit
µA
µA
V
µA
pF
mΩ
µS
mS
µS
µS
µA
A
A
A
°C
°C
Ω
Ω
µA
V
V
°C/W
°C/W
R
DS(ON)
Switch Resistance
V
IN
= 2.7V ~ 5.5V, I
OUT
= 500mA, each
switch
T
OND
Output Turn-On Delay
R
L
= 10Ω each output
T
R
Output Turn-On Rise Time R
L
= 10Ω each output
T
OFFD
Output Turnoff Delay
R
L
= 10Ω each output
T
F
Output Turnoff Fall Time
R
L
= 10Ω each output
I
LEAK
Output Leakage Current
Each output (output disabled)
I
OUT
Continuous Load Current
Each output
Each output (enable into load), V
OUT
=
I
OS
Short-circuit Current Limit
0V
Ramped load applied to enabled
I
LIM
Current-Limit Threshold
output
Over-temperature Shutdown T
J
increasing
T
TS
Threshold
T
J
decreasing
V
IN
= 5V, I
L
= 10mA
Error Flag Output
R
FO
Resistance
V
IN
= 3.3V, I
L
= 10mA
I
FOH
Error Flag Off Current
V
FLAG
= 5V
V
IN
= increasing
UVLO UVLO Threshold
V
IN
= decreasing
Thermal Resistance
θ
JA
SOP-8L
Junction-to-Ambient
Thermal Resistance
θ
JC
SOP-8L
Junction-to-Case
10
10
10
1.25
1.4
0.6
0.8
1.0
1.0
1.2
140
130
10
15
0.01
2.5
2.3
165
26
25
40
1
Notes:
7. Off is V
EN
≦0.8V
and on is V
EN
≧2.4V
for the AP1212H. Off is V
EN
≧2.4V
and on is V
EN
≦0.8V
for the AP1212L.
AP1212 Rev. 8
DS31019
5 of 12
www.diodes.com
NOVEMBER 2010
©
Diodes Incorporated
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