Rev. 1.0 May 2014 www.aosmd.com Page 1 of 12
AOZ1334DI-01
Single Channel Smart Load Switch
General Description
The AOZ1334DI-01 is a single channel load switch with
very low on-resistance in a small package. It contains an
n-channel MOSFET for up to VBIAS-1.5V input voltage
operation and 10A current channel with 3.2V to 5.5V bias
supply. The load switch is controlled by a low voltage
control signal through ON pin.
The AOZ1334DI-01 integrates an internal 220Ω load
resistor for quick output discharge when load switch is
off.
The AOZ1334DI-01 is available in a 3mm x 3mm DFN-8L
package with bottom thermal pad and is rated over a
-40°C to +85°C ambient temperature range.
Features
0.8V to VBIAS-1.5V input voltage range
10A continuous current
Low RDS(ON) internal NFETs
– 5mΩ at VBIAS = 5V, VIN = 1.05V, TA = 85°C
35µA low quiescent current
10µs turn on rise time
3.2V to 5.5V bias voltage
Integrated quick output discharge resistor
Thermally enhanced 3mm x 3mm DFN-8L package
Applications
Portable computers
Ultrabooks
Tablet PCs
Set top boxes
LCD TVs
Telecom/Networking/Datacom
equipment
SSD
Consumer electronics
Typical Application
VBIAS
VIN VOUT
IN
CL
AOZ1334DI-01
ON
OFF
OUT
OUTIN
VBIAS OUT
ON GND
CIN
CBIAS
AOZ1334DI-01
Rev. 1.0 May 2014 www.aosmd.com Page 2 of 12
Ordering Information
All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards.
Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information.
Pin Configuration
Pin Description
Part Number Temperature Range Package Environmental
AOZ1334DI-01 -40°C to +85°C 3mm x 3mm DFN-8L Green
Pin Number Pin Name Pin Function
1, 2, EPAD IN Load Switch Input. Bypass capacitor is recommended to minimize input voltage dip.
Recommended voltage range of this pin is 0.8V to VBIAS-1.5V to obtain optimal RON.
3 VBIAS Bias Voltage. Power supply input for the device. Recommended voltage range is 3.2V to
5.5V.
4 ON Enable Input. Load switch is on when ON is pulled high. Load switch is off when ON is
pulled low. Do not leave floating.
5 GND Ground.
6, 7, 8 OUT Load switch output.
1
2
3
4
OUT
OUT
OUT
GND
IN
IN
VBIAS
ON
3mm x 3mm DFN-8
(Top View)
EPAD
IN 8
7
6
5
8
7
6
5
IN
IN
VBIAS
ON
OUT
OUT
OUT
GND
3mm x 3mm DFN-8
(Bottom View)
EPAD
IN 1
2
3
4
AOZ1334DI-01
Rev. 1.0 May 2014 www.aosmd.com Page 3 of 12
Functional Block Diagram
Absolute Maximum Ratings
Exceeding the Absolute Maximum ratings may damage the
device.
Recommend Operating Ratings
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Parameter Rating
IN, ON, VBIAS, OUT to GND -0.3V to 6V
Junction Temperature (TJ) +150°C
Storage Temperature (TS) -65°C to +150°C
ESD Rating HBM/CDM 2kV/1kV
Parameter Rating
Supply Voltage (VIN)V
BIAS-1.5V
Ambient Temperature (TA) -40°C to +85°C
Package Thermal Resistance
3x3 DFN-8 (JC)
3x3 DFN-8 (JA)
8°C/W
60°C/W
IN
IN
VBIAS
ON
OUT
GND
OUT
OUT
Control
Logic
Electrical Characteristics
TA = 25°C, VBIAS = 5V, VIN = 1.05V, unless otherwise specified. Specifications in BOLD indicate a temperature range of
-40°C to +85°C.
Symbol Parameter Conditions Min. Typ. Max. Units
VIN IN Supply Voltage VON = 5V 0.8 1.05 VBIAS-1.5 V
VBIAS VBIAS Supply Voltage 3.2 5 5.5 V
IDMaximum Continuous Current VON = 5V 10 A
IPLS Maximum Pulsed Switch Current VIN = VON = 5V
Pulse < 300µs, 2% Duty Cycle
12 A
IqQuiescent Supply Current of VBIAS I
OUT = 0V, VON = 5V 35 µA
IOFF VBIAS Shutdown Supply Current VON = 0V, VOUT = 0V 2 µA
IINOFF IN Shutdown Supply Current VON = 0V, VOUT = 0V 2 µA
ION ON Leakage Current VON = 5V 1 µA
VONH ON High Level Voltage 1.2 V
VONL ON Low Level Voltage 0.5 V
Switching ON Resistance
RON Switch ON-State Resistance
IOUT = -200mA, VON = 5V,
VBIAS = 5V
3.9 6.3 mΩ
IOUT = -200mA, VON = 5V,
VBIAS = 3.3V
4.6 7.6 mΩ
RPD Output Pull-Down Resistance IOUT = 15mA, VON = 0V 220 300 Ω
Rev. 1.0 May 2014 www.aosmd.com Page 4 of 12
AOZ1334DI-01
Switching Characteristics
Test conditions: TA = 25°C, CIN = 1µF, CL = 0.1µF, RL = 10Ω (unless otherwise specified).
Symbol Parameter Min. Typ. Max. Units
VIN = 1.5V, VBIAS = VON = 5V
tON Turn-ON Time 8.5
µs
tD-ON Turn-ON Delay time 2
tRTurn-ON Rise Time 9.5
tOFF Turn-OFF Time 3
tFTurn-OFF Fall Time 1
VIN = 1.05V, VBIAS = VON = 5V
tON Turn-ON Time 8
µs
tD-ON Turn-ON Delay time 2
tRTurn-ON Rise Time 8.5
tOFF Turn-OFF Time 3.5
tFTurn-OFF Fall Time 1
50% 50%
50% 50%
VON
VOUT
t
ON
t
D-ON
t
OFF
90%
10%
t
R
t
F
90%
10%
1%
Rev. 1.0 May 2014 www.aosmd.com Page 5 of 12
AOZ1334DI-01
Typical Characteristics
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
Quiescent Current vs. VBIAS
(VIN=VBIAS=VON=5V)
RDSON vs. VIN
(VBIAS=5.5V, IOUT=-200mA)
RDSON vs. VIN
(VBIAS=3.2V, IOUT=-200mA)
40
38
36
34
32
30
28
3.2 3.6 4.8 5.24.0 4.4 5.6
VBIAS (V)
IBIAS (μA)
10
9
8
7
6
5
4
3
2
0.8 1.2 1.6 3.2 3.62.0 2.4 2.8 4.0
VIN (V)
RDSON (mΩ)
RSDON (mΩ)
VOUT (V)
VBIAS = 4.0V
VBIAS = 3.2V
VBIAS = 5.0V
VBIAS = 5.5V
25ºC
-40ºC
70ºC
85ºC
25ºC
-40ºC
70ºC
85ºC
0.8 0.9 1.1 1.2 1.5 1.61.3 1.4 1.7
VIN (V)
VOUT vs. VON
(TA=25ºC, VIN=2V)
2.5
2.0
1.5
1.0
0.5
0
0.5 0.70.6 1.00.90.8 1.1
VON (V)
25ºC
-40ºC
70ºC
85ºC
1.0
Rev. 1.0 May 2014 www.aosmd.com Page 6 of 12
AOZ1334DI-01
Typical Characteristics (Continued)
tON vs. VIN
(VBIAS=3.2V)
tD-ON vs. VIN
(VBIAS=5.5V)
tON vs. VIN
(VBIAS=5.5V)
tR vs. VIN
(VBIAS=3.2V)
tD-ON vs. VIN
(VBIAS=3.2V)
14
13
12
11
10
9
8
7
6
5
4
VIN (V)
tON (μs)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.8 1.2 2.01.6 4.02.4 2.8 3.2 3.6
VIN (V)
tD-ON (μs)
14
12
10
8
6
4
2
0
0.8 1.2 2.01.6 4.02.4 2.8 3.2 3.6
VIN (V)
tON (μs)
13
12
11
10
9
8
7
6
5
VIN (V)
tR (μs)
8
7
6
5
4
3
2
1
0
tD-ON (μs)
25ºC
-40ºC
70ºC
85ºC
0.8 1.00.9 1.4 1.61.51.1 1.31.2 1.7
25ºC
-40ºC
70ºC
85ºC
25ºC
-40ºC
70ºC
85ºC
25ºC
-40ºC
70ºC
85ºC
0.8 1.00.9 1.5 1.71.61.1 1.41.31.2
25ºC
-40ºC
70ºC
85ºC
VIN (V)
0.8 1.21.0 2.0 2.42.21.4 1.81.6 2.6
tR vs. VIN
(VBIAS=5.5V)
18
16
14
12
10
8
6
4
VIN (V)
tR (μs)
25ºC
-40ºC
70ºC
85ºC
0.8 1.61.2 3.2 4.03.62.0 2.82.4
Rev. 1.0 May 2014 www.aosmd.com Page 7 of 12
AOZ1334DI-01
Typical Characteristics (Continued)
tOFF vs. VIN
(VBIAS=3.2V)
tOFF vs. VIN
(VBIAS=5.5V)
tF vs. VIN
(VBIAS=3.2V)
tF vs. VIN
(VBIAS=5.5V)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
tOFF (μs)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
tOFF (μs)
3.0
2.5
2.0
1.5
1.0
0.5
0
tF (μs)
3.0
2.5
2.0
1.5
1.0
0.5
0
tF (μs)
VIN (V)
0.8 1.00.9 1.4 1.61.51.1 1.31.2 1.7
25ºC
-40ºC
70ºC
85ºC
VIN (V)
0.8 1.2 2.01.6 4.02.4 2.8 3.2 3.6
25ºC
-40ºC
70ºC
80ºC
VIN (V)
0.8
25ºC
-40ºC
70ºC
85ºC
VIN (V)
0.8
25ºC
-40ºC
70ºC
85ºC
1.00.9 1.4 1.61.51.1 1.31.2 1.7 1.2 2.01.6 4.02.4 2.8 3.2 3.6
Rev. 1.0 May 2014 www.aosmd.com Page 8 of 12
AOZ1334DI-01
Functional Characteristics
V
OUT
(200mV/div)
V
ON
(5V/div)
V
BIAS
(5V/div)
V
ON
(5V/div)
V
BIAS
(5V/div)
V
OUT
(200mV/div)
V
ON
(5V/div)
V
BIAS
(5V/div)
V
OUT
(200mV/div)
V
ON
(5V/div)
V
BIAS
(5V/div)
V
OUT
(500mV/div)
I
OUT
(5A/div)
V
ON
(5V/div)
V
BIAS
(5V/div)
V
OUT
(200mV/div)
V
ON
(5V/div)
V
BIAS
(5V/div)
V
OUT
(500mV/div)
I
OUT
(5A/div)
Turn-ON & Turn-ON Rise Times
(V
INX
=1.05V, V
BIAS
=5V, C
IN
=1μF, C
L
=0.1μF, R
L
=10Ω)
Turn-ON & Turn-ON Rise Times
(V
INX
=1.05V, V
BIAS
=3.2V, C
IN
=1μF, C
L
=0.1μF, R
L
=10Ω)
Turn-OFF & Turn-OFF Fall Times
(V
INX
=1.05V, V
BIAS
=5V, C
IN
=1μF, C
L
=0.1μF, R
L
=10Ω)
Turn-OFF & Turn-OFF Fall Times
(V
INX
=1.05V, V
BIAS
=3.2V, C
IN
=1μF, C
L
=0.1μF, R
L
=10Ω)
Turn-ON & Turn-OFF at I
OUT
=-10A
(V
INX
=1.05V, V
BIAS
=5V, C
IN
=1μF, C
L
=0.1μF, R
L
=0.1Ω)
Turn-ON & Turn-OFF at I
OUT
=-10A
(V
INX
=1.05V, V
BIAS
=3.2V, C
IN
=1μF, C
L
=0.1μF, R
L
=0.1Ω)
AOZ1334DI-01
Rev. 1.0 May 2014 www.aosmd.com Page 9 of 12
Detailed Description
ON/OFF Control
The AOZ1334DI-01 is enabled when the ON pin is on
active high with 1.2V or above voltage. The device is
disabled when the ON pin voltage is 0.5V or lower. The
EN input is compatible with both TTL and CMOS logic.
VBIAS Voltage Range
For optimal on-resistance of load switch, make sure VIN ≤
1.5V + VBIAS and VBIAS is within the voltage range from
3.2V to 5.5V. On-resistance of load switch will be higher
if VIN + 1.5V > VBIAS. Resistance curves of a typical
sample device at different VBIAS = VIN at IOUT = -200mA
are shown as below.
Applications Information
The basic AOZ1334DI-01 application circuit is shown in
the first page. Component selection is explained below.
Input Capacitor
A capacitor of 10μF or higher value is recommended to
be place close to the IN pins of AOZ1334DI-01. This
capacitor can reduce the voltage drop caused by the
in-rush current during the turn-on transient of the load
switch. A higher value capacitor can be used to further
reduce the voltage drop during high-current application.
Output Capacitor
A capacitor of 0.1μF or higher value is recommended to
be place between the OUT pins and GND. The switching
times are affected by the capacitance. A larger capacitor
makes the initial turn-on transient smoother. This capaci-
tor must be large enough to supply a fast transient load in
order to prevent the output from dropping.
Thermal Considerations
T
o ensure proper operation, the maximum junction tem-
perature of the AOZ1334DI-01 should not exceed 150°C.
Several factors attribute to the junction temperate rise:
load current, MOSFET on-resistance, junction-to-ambi-
ent thermal resistance, and ambient temperature. The
maximum load current can be determined by:
It is noted that the maximum continuous load current is
10A
.
Layout Guidelines
Good PCB is important for improving the thermal perfor-
mance of AOZ1334DI-01. Place the input and output
bypass capacitors close to the IN and OUT pins. The
input and output PCB traces should be as wide as possi-
ble for the given PCB space. Use a ground plane to
enhance the power dissipation capability of the device.
4.7
4.5
4.3
4.1
3.9
3.7
3.5
12 3 7 8 9456 10
IOUT (A)
RDSON (mΩ)
VBIAS = 5.0V
VBIAS = 3.3V
VBIAS = 5.5V
TA = 25ºC
ILOAD MAX
TJMAX
TC
–
JC RDS ON
----------------------------------------=
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
12 3 7 8 9456 10
IOUT (A)
RDSON (mΩ)
VBIAS = 5.0V
VBIAS = 3.3V
VBIAS = 5.5V
TA = 85ºC
AOZ1334DI-01
Rev. 1.0 May 2014 www.aosmd.com Page 10 of 12
Package Dimensions, DFN3x3_8L, EP1_S
WEIV MOTTOBWEIV POT
SIDE VIEW
RECOMMENDED LAND PATTERN
Notes:
1. Dimensions and tolerances conform to ASME Y14.5M-1994.
2. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact.
3. Dimension b applies to metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. If the terminal
has the optional radius on the other end of the terminal, dimension b should not be measured in that radius area.
4. Coplanarity ddd applies to the terminals and all other bottom surface metallization.
Symbols
A
A1
b1
b
c
D
D1
E
E1
e
L
R
aaa
bbb
ccc
ddd
0.70
0.00
1.55
0.25
---
2.90
2.35
2.90
1.50
0.35
0.75
0.02
1.60
0.30
0.203
3.00
2.40
3.00
1.60
0.65 BSC
0.40
0.20
0.15
0.10
0.10
0.08
0.80
0.05
1.65
0.35
---
3.10
2.45
3.10
1.70
0.45
Dimensions in millimeters
Min. Nom. Max.
A
A1
b1
b
c
D
D1
E
E1
e
L
R
aaa
bbb
ccc
ddd
0.028
0.000
0.061
0.010
---
0.114
0.093
0.114
0.059
0.014
0.030
0.001
0.063
0.012
0.008
0.118
0.094
0.118
0.063
0.026 BSC
0.016
0.008
0.006
0.004
0.004
0.003
0.031
0.002
0.065
0.014
---
0.122
0.096
0.122
0.067
0.018
Symbols
Dimensions in inches
Min. Nom. Max.
UNIT: mm
E
b1
e
L
D1
A1
Seating
Plane
A
2.40
E1
Pin1
Identification
1
8
D
aaa C2x
aaa C2x
b
L
1
8
bbb C A B
8x
C
ddd C
ccc C
2.60
1.30
1.60
1.60
0.30
0.30
0.40 0.65
Rev. 1.0 May 2014 www.aosmd.com Page 11 of 12
AOZ1334DI-01
Tape and Reel Dimensions, DFN3x3_8L, EP1_S
Carrier Tape
Reel
Leader
/
Trailer & Orientation
Tape Size
12mm
Reel Size
ø330
M
ø330.00
±0.50
Package
DFN 3x3_EP
A0
3.40
±0.10
B0
3.35
±0.10
K0
1.10
±0.10
D1
1.50
+0.10/-0.0
D0
1.50
+0.10/-0.0
E
12.00
E1
1.75
±0.10
±0.30
E2
5.50
±0.05
P0
8.00
±0.10
P1
4.00
±0.10
P2
2.00
±0.05
T
0.30
±0.05
N
ø97.00
±0 . 1 0
W
13.00
±±0.30
W1
M
S
K
H
N
Trailer Tape
300mm Min.
Components Tape
Orientation in Pocket
Leader Tape
500mm Min.
UNIT: mm
UNIT: mm
K0
P1
P0 A0
A
B0
P2
E
E2
E1
D0 D1
Feeding Direction
W1
17.40
1.00
H
ø13.00
+0.5/-0.2
K
10.60
±0.50
S
2.00
GR
N/AN/A
V
N/A
T
W
Unit Per Reel:
5000pcs
A–A
A
R
G
V
AOZ1334DI-01
Rev. 1.0 May 2014 www.aosmd.com Page 12 of 12
Package Marking
AOZ1334DI-01
(DFN3x3-8)
Assembly Lot Code
Part Number Code
Extension Code Year & Week Code
Assembly Location Code
1334
XOAW
LT
Option Code
As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant into
the body or (b) support or sustain life, and (c) whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of
the user.
2. A critical component in any component of a life
support, device, or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
LEGAL DISCLAIMER
Alpha and Omega Semiconductor makes no representations or warranties with respect to the accuracy or
completeness of the information provided herein and takes no liabilities for the consequences of use of such
information or any product described herein. Alpha and Omega Semiconductor reserves the right to make changes
to such information at any time without further notice. This document does not constitute the grant of any intellectual
property rights or representation of non-infringement of any third party’s intellectual property rights.
LIFE SUPPORT POLICY
ALPHA AND OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL
COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS.