AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 1 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
• 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)
• USB hubs
• Hot plug-in power supplies
• Battery-charger circuits
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 channe l supplies up to 500 mA 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 e nsure that the device remains off u nless there
is a valid inpu t voltage present, an d 3 .3V and 5V logic compatible
enable inputs.
Typical Application Circuit
USB
Control
3.3V 5V
Power
Supply
0.1uF
2
1
3
4
7IN
FLG1
EN1
FLG2
EN2
OUT1
OUT2
GND
6
0.1uF 33uF
33uF0.1uF
8
5
GND
VBUS
D-
D+
GND
VBUS
D-
D+
Downstream
USB Ports
AP1212
ferrite bead
ferrite bead
ferrite bead
ferrite bead
Features General Description
Applications
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 2 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
AP 1212 X S X - 13
Package 13 : Tape & Reel
S : SOP-8L Lead Free
L : Lead Free
Enable
H : Active High
L : Active Low G : Green
Packing
Device Package
Code Packaging
(Not e 2) 13” Tape and Reel
Quantity Part Number Suffix
AP1212XSL-13 S SOP-8L 2500/Tape & Reel -13
AP1212XSG-13 S SOP-8L 2500/Tape & Reel -13
Notes: 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.
EN1
EN2
FLG1
FLG2
1
2
3
4
8
7
6
5OUT2
OUT1
GND
IN
SOP-8L
AP1212
( Top View )
Pin Name Description
EN1
EN2 Enable: Logic-compatible enable input. (H: active high, L: active low). Do not float.
FLG1
FLG2 Fault Flag: Active-low, open-drain output. Indicates over current, UVLO, and thermal
shutdown.
GND Supply return.
IN Supply Input: Output MOSFET drain. Also supplies IC’s internal circuitry. Connect to positive
supply.
OUT1
OUT2 Switch Output: Output MOSFET source. Typically connect to switched side of load.
Ordering Information
Pin Assignments
Pin Descriptions
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 3 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Block Diagram
Charge
Pump
Charge
Pump
Driver
Current
Limit
UVLO
Current
Limit
Driver
CS
CS
OUT1
IN
OUT2
FLG1
EN1
EN2
FLG2
Power N-MOSFET Power N-MOSFET
Thermal
Shutdown
Thermal
Shutdown
Test Circuit (Note 3)
EN1
FLG1
FLG2
EN2
OUT1
IN
GND
OUT2
ON
OFF
ON
OFF
10K R2
10K R1 VCC
+5V
R3>=10
R4>=10
0.1uF
C1
AP1212
Notes: 3. Before EN is asserted, a delay of 10ms minimum from when the supply voltage, Vcc, becomes stable must be allowed.
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 4 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Absolute Maximum Ratings (Note 4)
Symbol Paramete
r
Rating Unit
ESD HBM Human Body Model ESD Protec tion (Note 5) 500 V
ESD MM Machine Model ESD Protection
(
Note 5
)
150 V
VIN Supply Voltage +7 V
VFLG Fault Flag Voltage +7 V
IFLG Fault Flag Current 50 mA
VOUT Output Voltage +7 V
VEN Control Input Range -0.3 to VIN +2 V
TST Storage Temperature -65 to +150 °C
MSL Moisture Sensitivity Level 3 -
Recommended Operating Conditions (No t e 6)
Symbol Parameter Min Max Unit
VIN Supply Voltage 2.7 5.5 V
TA Operating Ambient Temperature -40 125 oC
Notes: 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
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 5 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Electrical Characteristics
(Under the conditions of VIN =+5V and TA =25oC, unless otherwise specified)
Symbol Parameter Conditions Min Typ. Max Unit
ICC Supply Current Switch off, OUT = open (Note 7) 0.50 5 µA
All switches on, OUT = open (Note 7) 110 160 µA
VIT Enable Input Threshold (Note 7) 0.8 1.7 2.40 V
IEN Enable Input Current VEN = 0V to 5.5V -1 ±0.01 1 µA
CEN Enable Input Capacitance 1 pF
RDS(ON) Switch Resistance VIN = 2.7V ~ 5.5V, IOUT = 500mA, each
switch 110 140
mΩ
TOND Output Turn-On Delay RL = 10Ω each output 30 µS
TR Output Turn-On Rise Time RL = 10Ω each output 1 mS
TOFFD Output Turnoff Delay RL = 10Ω each output 0.5 10 µS
TF Output Turnoff Fall Time RL = 10Ω each output 0.5 10 µS
ILEAK Output Leakage Current Each output (output disabled) 10 µA
IOUT Continuous Load Current Each output 0.6 A
IOS Short-circuit Current Limit Each output (enable into load), VOUT =
0V 0.8 1.0 1.25 A
ILIM Current-Limit Threshold Ramped load applied to enabled
output 1.0 1.2 1.4 A
TTS Ov er-temper ature Shutdown
Threshold TJ increasing 140
°C
TJ decreasing 130
°C
RFO Error Flag Output
Resistance VIN = 5V, IL = 10mA 10 25 Ω
VIN = 3.3V, IL = 10mA 15 40
Ω
IFOH Error Flag Off Current VFLAG = 5V 0.01 1 µA
UVLO UVLO Threshold VIN = increasing 2.5 V
VIN = decreasing 2.3 V
θJA Thermal Resistance
Junction-to-Ambient SOP-8L 165 °C/W
θJC
T
hermal Resistance
Junction-to-Case SOP-8L 26 °C/W
Notes: 7. Off is V
EN≦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
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 6 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporated
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Typical Performance Characteristics
2.5 3.0 3.5 4.0 4.5 5.0 5.5
88
92
96
100
104
108
112
116
120
RL=10ohm
T=25℃
On-Resistance vs. SupplyVoltage
ON-RESISTANCE (ms)
SUPPLY VOLTAGE(V)
-40 -20 020406080100
60
70
80
100
90
120
110
130
150
140
160
VSUPPLY=3.3V
VSUPPLY=5V
RL=10ohm
On-Resistance vs. Temperature
ON-RESISTANCE (ms)
TEMPERATURE (OC)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
0.2
0.0
0.4
0.8
1.0
1.2
1.4
CL=47 uF
RL=10ohm
85OC
25OC-40OC
Turn-On Rise Time vs. SupplyVoltage
RISE TIME(mS)
SUPPLY VOLTAGE (V)
0.6
-40 -20 0 20 40 60 80 100
0.2
0.0
0.4
0.6
0.8
1.0
1.2
1.4
RL=10ohm
CL=47uF
VSUPPLY=3.3V
VSUPPLY=5V
Turn-On Rise Time vs. Temperature
RISE TIME (mS)
TEMPERATURE (OC)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
0
20
40
60
80
100
120
140
160
180
200
220
85OC
25OC
-40OC
On-Current vs. Supply Voltage
CURRENT (≤gA)
SUPPLY VOLTAGE (V)
-40 -20 0 20 40 60 80 100
0
20
40
60
80
100
120
140
160
180
200
VSUPPLY=3.3V
VSUPPLY=5V
On-Current vs. Temperature
CURRENT (≤gA)
TEMPERAT URE (
OC)
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 7 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporat ed
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Typical Performance Characteristics (Continued)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
-50
0
50
100
150
200
250
300
350
85OC
25OC
-40OC
Off-Current vs. Supply Voltage
CURRENT (nA)
SUPPLY VOLTAGE (V)
-40 -20 0 20 40 60 80 100
-50
0
50
100
150
200
250
300
350
VSUPPLY=3.3V
VSUPPLY=5V
Off-Current vs. Tempera ture
CURRENT (nA)
TEMPERATURE (OC)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
1.0
1.2
1.4
1.6
1.8
2.0
VEN FALLING
VEN RISING
T=25OC
Enable Threshold vs. Supply Voltage
ENABLE THRESHOLD (V)
SUPPLY VOLTAGE (V)
-40 -20 0 20 40 60 80 100
1.0
1.2
1.4
1.6
1.8
2.0
VIN=5V
VEN FALLING
VEN RISING
Enable Threshold vs. Temperature
ENABLE THRESHOLD (V)
TEMPERATURE (OC)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
85OC
25OC
-40OC
Short-Circuit Current-Limit vs. Supply Voltage
CURRENT-LIMIT (A)
SUPPLY VOLTAGE (V)
-40-200 20406080100
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
VSUPPLY=3.3V
VSUPPLY=5V
Short-Circuit Current-Limit vs. Tempe rature
CURRENT-LIMIT (A)
TEMPERATURE (OC)
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 8 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporat ed
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Typical Performance Characteristics (Continued)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
85OC
25OC
-40OC
Current-Limit Threshold vs. Supply Voltage
CURRENT-LIMIT THRESHOLD (A)
SUPPLY VOLTAGE (V)
-40-200 20406080100
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
VSUPPLY=3.3V
VSUPPLY=5V
Current-Limit Threshold vs. Temperature
CURRENT-LIMIT (A)
TEMPERATURE (OC)
-40 -20 0 20 40 60 80 100
0.0
0.5
1.0
1.5
2.0
2.5
3.0
VIN FALLING
VIN RISING
UVLO Threshold vs. Temperature
UVLO THRESHOLD (V)
TEMPERATURE (OC)
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 9 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporat ed
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
Typical Performance Characteristics (Continued)
Turn-On/Turn-Off (AP1212H) Turn-On (AP1212H)
TIME (10mS/div.) TIME (200μS/div.)
Turn-Off (AP1212H) Enabled Into Short (AP1212H)
TIME (2mS/div.) TIME (500μS/div.)
Current-Limit Response (AP1212H) Current-Limit Response (AP1212H)
TIME (50mS/div.) TIME (20μS/div.)
I
OUT
VEN
VFLG
VOUT
IOUT
VIN=5V
CL=47μF
RL=35Ω
Inrush Current 140 mA
Inrush Current
V
E
N
V
FLG
V
OUT
VIN=5V
CL=47μF
RL=35Ω
Output Turn-On
Rise Tim e
140 mA
140 mA
VIN=5V
CL=47μF
RL=35Ω
VEN
VFLG
VOUT
IOUT
VIN=5V
Short-Circuit Current
V
EN
VFLG
V
I
Hysteresis (10OC)
VIN=5V
CL=47μF
Current-Limit
Threshold Short-Circuit Current
Thermal Shutdown
VEN
VOUT
VIN=5V
CL=47μF
Current-Limit
Threshold Short-Circuit Current
VEN
VFLG
VOUT
I
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 10 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporat ed
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
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 MO SFET switch es from dama ge due to undes irable sho rt
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 Sh utdow n
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 turni ng back on unti l the chip tempe rature dr ops
to below 130ºC.
Enable
Before EN is asserted, a delay of 10ms minimum from when the
supply voltage, Vcc, becomes stable must be allowed.
Suppl y Filt er i ng
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 su rge is cause d by the inp ut capacitance o f
downstream device. Ferrite beads are recommended in series
with all power and ground connector pins. Ferrite beads reduce
EMI and limi t the inr us h curre nt dur in g hot- at tachme nt b y filte ri ng
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 Ci r cu it Layout
The power circuitry of USB printed circuit boards requires a
customized layout to maximize thermal dissipation and to
minimize voltage drop and EMI.
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 11 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporat ed
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
(1) SOP-8L
( Top View )
AP1212 X
YY WW
XX
Logo
Part Number
5
8
41
WW : Week : 01~52; 52
YY : Year : 08, 09,10~
L : Lead Free
X : Internal Code
represents 52 and 53 week
H : Active High
L : Active Low
G : Green
Package Information (All Dimensions in mm)
(1) Package Type: SOP-8L
1.27typ 0.3/0.5
7°~9°
4.85/4.95
3.85/3.95
5.90/6.10
0.15/0.25
7°~9°
0.62/0.82
0.10/0.20
Gauge Plane
0.254
Seating Plane
0.35max. 45°
Detail "A"
Detail "A"
1.30/1.50
1.75max.
Land Pattern Recommendation
(Unit: mm)
6x-1.27
8x-1.55
8x-0.60
5.4
0°/8°
Marking Information
AP1212
DUAL USB HIGH-SIDE POWER SWITCH
AP1212 Rev. 8 12 of 12 NOVEMBER 2010
DS31019 www.diodes.com © Diodes Incorporat ed
NOT RECOMMENDED FOR
NEW DESIGN PLEASE USE
AP2146 OR AP2156
IMPORTANT NOTICE
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DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULA R PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
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changes without f urth er notice to this docum ent and any product des c ribed herein . Diodes Incorpora ted does not assume any liability
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Diodes Inc orporated product s are specif icall y not authorized for use as criti cal components in life support devi ces or systems without
the express written approva l of t he Chief Execut ive Officer of Diod es Inc o rpo rated. As used herei n :
A. Life support devices or systems are devices or systems which:
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in the labeli ng can be reas onably expected to result in signif ic a nt i njur y t o t h e user.
B. A critica l component is an y component in a l ife support devi ce or system whose failure t o perform can be reas onably expecte d
to cause the failure of the life support device or to affect its safety or effectiveness.
Custom ers represent t hat they have all necessary expertis e in the safety and regulator y ramific ations of their life support devices or
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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.
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