AW32901/AW32902/AW32905/
AW32909/AW32910/AW32912
Apr. 2018 V1.0
Over-Voltage Protection Load Switch with Surge Protection
FEATURES
Highly reliable 1.3mm × 1.8mm FCQFN-12
package
Surge protection
IEC 61000-4-5: > 120V
Integrated low R
dson
nFET switch: typical 27m
5A continuous current capability
Default Over-Voltage Protection (OVP) threshold
AW32901: 5.95V
AW32902: 6.2V
AW32905: 6.8V
AW32909: 9.98V
AW32910: 10.5V
AW32912: 14V
OVP threshold adjustable range: 4V to 20V
Input system ESD protection
IEC 61000-4-2 Contact discharge: ±8kV
IEC 61000-4-2 Air gap discharge: ±15kV
Input maximum voltage rating: 29V
DC
Fast turn-off response: typical 50ns
Over-Temperature Protection (OTP)
Under-Voltage Lockout (UVLO)
GENERAL DESCRIPTION
The AW329xx family OVP load switch features
surge protection, an internal clamp circuit protects
the device from surge voltages up to 120V.
The AW329xx features an ultra-low 27m (typ.)
R
dson
nFET load switch. When input voltage
exceeds the OVP threshold, the switch is turned off
very fast to prevent damage to the protected
downstream devices. The IN pin is capable of
withstanding fault voltages up to 29V
DC
.
The default OVP threshold is 5.95V (AW32901),
6.2V (AW32902), 6.8V (AW32905), 9.98V
(AW32909),
10.5V
(AW32910)
and
14V
(AW32912), the OVP threshold can be adjusted
from 4V to 20V through external OVLO pin.
The device features an open-drain output ACOK,
when
V
IN_UVLO
< V
IN
<
V
IN_OVLO
and
the switch is
on, ACOK will be driven low to indicate a good
power input, otherwise it is high impedance.
This device features over-temperature protection
that prevents itself from thermal damaging.
The AW329xx is available in a RoHS compliant
1.3mm × 1.8mm FCQFN-12 package.
APPLICATIONS
Smartphones
Tablets
Charging Ports
TYPICAL APPLICATION CIRCUIT
USB
Port
TVS
C
IN
0.1µF
50V
R
1
IN
OUT
C
OUT
1µF
Charger
Battery
PMIC
Optional
R
2
Optional
AW32901
AW32902
OVLO
AW32905
AW32909
ACOK
AW32910
AW32912
EN
GND
Controller
Figure 1 AW329XX typical application circuit
R
1
and R
2
are used for OVP threshold adjustment, to use default OVP threshold, connect OVLO to ground.
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Copyright © 2016 SHANGHAI AWINIC TECHNOLOGY CO., LTD
AW32901/AW32902/AW32905/
AW32909/AW32910/AW32912
Apr. 2018 V1.0
DEVICE COMPARISON TABLE
V
IN_OVLO
(V)
Device
AW32901
AW32902
AW32905
AW32909
AW32910
AW32912
Condition
V
IN
rising
V
IN
rising
V
IN
rising
V
IN
rising
V
IN
rising
V
IN
rising
Min.
5.83
6.08
6.66
9.78
10.29
13.7
Typ.
5.95
6.20
6.80
9.98
10.50
14.0
Max.
6.07
6.32
6.94
10.18
10.71
14.3
V
IN_OVLO
hysteresis (mV)
130
130
140
210
210
280
PIN CONFIGURATION AND TOP MARK
Pin Configuration (TOP VIEW)
1
2
3
4
Marking
1
2
3
4
XXX
YYY
A
EN
OUT
OUT
GND
A
B
ACOK
OUT
IN
GND
B
C
OVLO
IN
IN
GND
C
XXX
–
Marking
YYY
–
Production tracking code
Figure 2 Pin Configuration and Top Mark
PIN DEFINITION
Pin
A1
B1
C1
C2, C3, B3
A2, A3, B2
A4, B4, C4
Name
EN
ACOK
OVLO
IN
OUT
GND
Description
Enable pin, active low
Power good flag, active-low, open-drain
OVP threshold adjustment pin
Switch input and device power supply
Switch output
Device ground
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Copyright © 2016 SHANGHAI AWINIC TECHNOLOGY CO., LTD
AW32901/AW32902/AW32905/
AW32909/AW32910/AW32912
Apr. 2018 V1.0
TYPICAL APPLICATION CIRCUITS
USB
Port
TVS
C
IN
0.1µF
50V
IN
OUT
C
OUT
1µF
Charger
Battery
PMIC
Optional
AW32901
AW32902
OVLO
AW32905
AW32909
ACOK
AW32910
AW32912
EN
GND
Controller
Figure 4
AW329XX typical application circuit(using default OVP threshold)
USB
Port
TVS
C
IN
0.1µF
50V
R
1
IN
OUT
C
OUT
1µF
Charger
Battery
PMIC
Optional
R
2
AW32901
AW32902
OVLO
AW32905
AW32909
ACOK
AW32910
AW32912
EN
GND
Controller
Figure 5 AW329XX typical application circuit(using external resistors set OVP threshold)
Notice for Typical Application Circuits:
1. If VBUS is required to pass surge voltage greater than 120V, external TVS is needed, the maximum
clamping voltage of the TVS should be below 34V.
2. When the default OVP threshold is used, connect OVLO pin to GND directly or through a 0Ω resistor.
OVLO pin cannot be left floating.
3. If R
1
and R
2
are used to adjust the OVP threshold, it is better to use 1% precision resistors to improve the
OVP threshold precision.
4. If
ACOK
is not used, it can be left floating, or short to GND.
5. C
IN
= 0.1μF is recommended for typical application, larger C
IN
is also acceptable. The rated voltage of C
IN
should be larger than the TVS maximum clamping voltage, if no TVS is applied and only AW329XX is
used, the rated voltage of C
IN
should be 50V.
6. C
OUT
= 1μF is recommended for typical application, larger C
OUT
is also acceptable. The rated voltage of
C
OUT
should be larger than the OVP threshold. For example, if the OVP threshold is 6.8V, the rated voltage
of C
OUT
should be 10V or higher.
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