NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
General Description
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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.
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)
Applications
•
•
•
USB hubs
Hot plug-in power supplies
Battery-charger circuits
Typical Application Circuit
Power
Supply
3.3V
Downstream
USB Ports
AP1212
5V
7
IN
OUT1
0.1uF
USB
Control
8
0.1uF
ferrite bead
2
FLG1
1
EN1
3
FLG2
4
EN2
OUT2
5
0.1uF
GND
6
AP1212 Rev. 8
DS31019
D+
Dferrite bead
VBUS
33uF
GND
1 of 12
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D+
Dferrite bead
VBUS
33uF
GND
ferrite bead
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
Package
Lead Free
Packing
H : Active High
L : Active Low
S : SOP-8L
L : Lead Free
G : Green
13 : Tape & Reel
Device
AP1212XSL-13
AP1212XSG-13
Notes:
Package
Code
S
S
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
Packaging
(Note 2)
SOP-8L
SOP-8L
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
8 OUT1
1
FLG1 2
7
IN
AP1212
6 GND
FLG2 3
EN2
4
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
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NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Block Diagram
FLG1
Driver
Charge
Pump
Current
Limit
Thermal
Shutdown
UVLO
CS
IN
Thermal
Shutdown
Charge
Pump
EN2
FLG2
Current
Limit
CS
Driver
Power N-MOSFET
EN1
Power N-MOSFET
OUT1
OUT2
Test Circuit
(Note 3)
VCC
10K R1
+5V
10K R2
ON
OFF
R3>=10
EN1
OUT1
FLG1
IN
C1
ON
FLG2
GND
EN2
OUT2
0.1uF
R4>=10
OFF
AP1212
Notes:
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
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NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Absolute Maximum Ratings
Symbol
ESD HBM
ESD MM
VIN
VFLG
IFLG
VOUT
VEN
TST
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
Recommended Operating Conditions
Symbol
VIN
TA
Notes:
Rating
500
150
+7
+7
50
+7
-0.3 to VIN +2
-65 to +150
3
Unit
V
V
V
V
mA
V
V
°C
-
(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
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NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Electrical Characteristics
(Under the conditions of VIN =+5V and TA =25oC, unless otherwise specified)
Symbol
Parameter
ICC
Supply Current
VIT
IEN
CEN
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)
VEN = 0V to 5.5V
VIN = 2.7V ~ 5.5V, IOUT = 500mA, each
switch
TOND Output Turn-On Delay
RL = 10Ω each output
TR
Output Turn-On Rise Time RL = 10Ω each output
TOFFD Output Turnoff Delay
RL = 10Ω each output
TF
Output Turnoff Fall Time
RL = 10Ω each output
ILEAK Output Leakage Current
Each output (output disabled)
IOUT
Continuous Load Current
Each output
Each output (enable into load), VOUT =
IOS
Short-circuit Current Limit
0V
Ramped load applied to enabled
ILIM
Current-Limit Threshold
output
T
Over-temperature Shutdown J increasing
TTS
Threshold
TJ decreasing
VIN = 5V, IL = 10mA
Error Flag Output
RFO
Resistance
VIN = 3.3V, IL = 10mA
IFOH
Error Flag Off Current
VFLAG = 5V
VIN = increasing
UVLO UVLO Threshold
VIN = decreasing
Thermal Resistance
θJA
SOP-8L
Junction-to-Ambient
Thermal Resistance
θJC
SOP-8L
Junction-to-Case
Min
0.8
-1
RDS(ON) Switch Resistance
Notes:
Max
5
160
2.40
1
Unit
µA
µA
V
µA
pF
110
140
mΩ
30
1
0.5
0.5
10
10
10
0.6
µS
mS
µS
µS
µA
A
0.8
1.0
1.25
A
1.0
1.2
1.4
A
°C
140
130
10
15
0.01
2.5
2.3
25
40
1
°C
Ω
Ω
µA
V
V
165
°C/W
26
°C/W
7. Off is VEN≦0.8V and on is VEN≧2.4V for the AP1212H. Off is VEN≧2.4V and on is VEN≦0.8V for the AP1212L.
AP1212 Rev. 8
DS31019
Typ.
0.50
110
1.7
±0.01
1
5 of 12
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AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Typical Performance Characteristics
On-Resistance vs. Temperature
On-Resistance vs. Supply Voltage
160
120
150
ON-RESISTANCE (ms)
ON-RESISTANCE (ms)
116
112
108
104
100
RL =10ohm
T=25℃
96
140
130
120
3.0
3.5
4.0
4.5
5.0
VSUPPLY=3.3V
100
90
RL=10ohm
80
70
60
- 40
92
88
2.5
VSUPPLY =5V
110
5.5
- 20
SUPPLY VOLTAGE (V)
Turn-On Rise Time vs. Supply Voltage
O
85 C
-40OC
0.8
O
25 C
0.6
0.4
100
VSUPPLY =5V
1.0
0.8
0.0
3.0
3.5
4.0
4.5
5.0
VSUPPLY=3.3V
0.6
RL=10ohm
CL=47uF
0.2
CL=47 uF
0.0
5.5
-40
-20
0
SUPPLY VOLTAGE (V)
20
40
60
TEMPERATURE (OC)
80
100
On-Current vs. Temperature
On-Current vs. Supply Voltage
200
180
160
O
25 C
CURRENT (≤gA)
CURRENT (≤gA)
80
1.2
0.4
RL=10ohm
0.2
DS31019
60
Turn-On Rise Time vs. Temperature
RISE TIME ( m S )
RISE TIME ( mS )
1.0
AP1212 Rev. 8
40
1.4
1.2
220
200
180
160
140
120
100
80
60
40
20
0
2.5
20
TEMPERATURE (O C )
1.4
2.5
0
-40OC
O
85 C
VSUPPLY=5V
140
120
100
80
60
VSUPPLY =3.3V
40
20
3.0
3.5
4.0
4.5
SUPPLY VOLTAGE (V)
5.0
5.5
0
-40
-20
0
20
40
60
80
100
TEMPERATUREO(C)
6 of 12
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AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Typical Performance Characteristics
(Continued)
Off-Current vs. Temperature
Off-Current vs. Supply Voltage
350
350
300
300
O
85 C
250
CURRENT (nA)
CURRENT (nA)
250
200
150
O
100
25 C
200
VSUPPLY=5V
150
VSUPPLY=3.3V
100
50
50
0
0
O
-40 C
-50
2.5
3.0
3.5
4.0
4.5
5.0
-50
-40
5.5
-20
0
40
60
80
100
TEMPERATURE ( C)
Enable Threshold vs. Temperature
Enable Threshold vs. Supply Voltage
2.0
2.0
1.8
1.8
ENABLE THRESHOLD (V)
ENABLE THRESHOLD (V)
20
O
SUPPLY VOLTAGE (V)
1.6
VEN RISING
1.4
VEN FALLING
1.2
VEN RISING
1.6
VEN FALLING
1.4
VIN=5V
1.2
O
T=25 C
1.0
2.5
3.0
3.5
4.0
4.5
5.0
1.0
-40
5.5
-20
0
1.4
1.4
O
-40 C
O
25 C
0.8
O
85 C
0.6
0.4
0.2
0.0
2.5
DS31019
80
100
1.2
VSUPPLY=5V
1.0
0.8
VSUPPLY=3.3V
0.6
0.4
0.2
3.0
3.5
4.0
4.5
5.0
5.5
0.0
-40
SUPPLY VOLTAGE (V)
AP1212 Rev. 8
60
Short-Circuit Current-Limit vs. Temperature
1.6
CURRENT-LIMIT (A)
CURRENT-LIMIT (A)
Short-Circuit Current-Limit vs. Supply Voltage
1.0
40
O
1.6
1.2
20
TEMPERATURE ( C)
SUPPLY VOLTAGE (V)
-20
0
20
40
60
80
100
O
TEMPERATURE ( C)
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AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Typical Performance Characteristics
(Continued)
Current-Limit Threshold vs. Temperature
Current-Limit Threshold vs. Supply Voltage
1.6
1.4
1.4
O
-40 C
O
25 C
1.2
CURRENT-LIMIT (A)
CURRENT-LIMIT THRESHOLD (A)
1.6
O
85 C
1.0
0.8
0.6
0.4
VSUPPLY=5V
1.2
1.0
VSUPPLY=3.3V
0.8
0.6
0.4
0.2
0.2
0.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.0
-40
-20
0
20
40
60
80
100
O
SUPPLY VOLTAGE (V)
TEMPERATURE ( C)
UVLO Threshold vs. Temperature
3.0
VIN RISING
UVLO THRESHOLD (V)
2.5
VIN FALLING
2.0
1.5
1.0
0.5
0.0
-40
-20
0
20
40
60
80
100
O
TEMPERATURE ( C)
AP1212 Rev. 8
DS31019
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AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Typical Performance Characteristics
(Continued)
Turn-On/Turn-Off (AP1212H)
Turn-On (AP1212H)
VEN
VEN
VIN=5V
CL=47μF
RL=35Ω
VFLG
Inrush Current
VOUT
VFLG
VIN=5V
CL=47μF
RL=35Ω
Output Turn-On
Rise Time
140 mA
VOUT
140 mA
Inrush Current
IOUT
IOUT
TIME (10mS/div.)
TIME (200μS/div.)
Turn-Off (AP1212H)
Enabled Into Short (AP1212H)
VEN
VEN
VIN=5V
CL=47μF
RL=35Ω
VFLG
VOUT
VFLG
Short-Circuit Current
V
140 mA
I
IOUT
TIME (2mS/div.)
TIME (500μS/div.)
Current-Limit Response (AP1212H)
Current-Limit Response (AP1212H)
VEN
VEN
VIN=5V
CL=47μF
VOUT
Current-Limit Short-Circuit Current
Threshold
Thermal Shutdown
AP1212 Rev. 8
VFLG
VOUT
Hysteresis (10OC)
TIME (50mS/div.)
DS31019
VIN=5V
VIN=5V
CL=47μF
Current-Limit
Threshold
Short-Circuit Current
I
TIME (20μS/div.)
9 of 12
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AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Functional Description
Error Flag
An open-drained output of N-channel MOSFET, the FLG output
is pulled low to signal the following fault conditions: input under
voltage, output current limit, and thermal shutdown.
Current Limit
The current limit threshold is preset internally. It protects the
output MOSFET switches from damage due to undesirable short
circuit conditions or excess inrush current often encountered
during hot plug-in. The low limit of the current limit threshold of
the AP1212 allows a minimum current of 0.5A through the
MOSFET switches. A current limit condition will signal the error
flag.
Thermal Shutdown
When the chip temperature exceeds 140ºC for any reason other
than over current fault of either one of the two MOSFET switches,
the thermal shutdown function turns off both MOSFET switches
and signals the error flag. A hysteresis of 10ºC prevents the
MOSFETs from turning back on until the chip temperature drops
to below 130ºC.
Enable
Before EN is asserted, a delay of 10ms minimum from when the
supply voltage, Vcc, becomes stable must be allowed.
AP1212 Rev. 8
DS31019
Supply Filtering
A 0.1µF to 1µF bypass capacitor from IN to GND, located near
the device, is strongly recommended to control supply transients.
Without a bypass capacitor, an output short may cause sufficient
ringing on the input (from supply lead inductance) to damage
internal control circuitry.
Transient Droop Requirements
USB applications support dynamic attachment (hot plug-in) of
peripherals. A current surge is caused by the input capacitance of
downstream device. Ferrite beads are recommended in series
with all power and ground connector pins. Ferrite beads reduce
EMI and limit the inrush current during hot-attachment by filtering
high-frequency signals.
Short Circuit Transient
Bulk capacitance provides the short-term transient current
needed during a hot-attachment event. With a 33µF,
16V tantalum or 100µF, 10V electrolytic capacitor mounted close
to downstream connector per port should provide transient drop
protection.
Printed Circuit Layout
The power circuitry of USB printed circuit boards requires a
customized layout to maximize thermal dissipation and to
minimize voltage drop and EMI.
10 of 12
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AP2146 OR AP2156
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
Marking Information
(1) SOP-8L
( Top View )
5
8
H : Active High
L : Active Low
YY : Year : 08, 09,10~
WW : Week : 01~52; 52
represents 52 and 53 week
X : Internal Code
L : Lead Free
G : Green
Logo
AP1212 X
YY WW X X
Part Number
1
Package Information
4
(All Dimensions in mm)
0.254
0.10/0.20
3.85/3.95
5.90/6.10
(1) Package Type: SOP-8L
Gauge Plane
Seating Plane
0.62/0.82
Detail "A"
7°~9°
7°~9°
0.15/0.25
1.30/1.50
1.75max.
0.35max. 45°
Detail "A"
0°/8°
0.3/0.5
1.27typ
4.85/4.95
5.4
8x-0.60
8x-1.55
6x-1.27
Land Pattern Recommendation
(Unit: mm)
AP1212 Rev. 8
DS31019
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AP1212
DUAL USB HIGH-SIDE POWER SWITCH
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.
B.
A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2009, Diodes Incorporated
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DS31019
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