Datasheet

AOZ1334DI-01
Single Channel Smart Load Switch
General Description
Features
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.

0.8V to VBIAS-1.5V input voltage range

10A continuous current

Low RDS(ON) internal NFETs

35µA low quiescent current
The AOZ1334DI-01 integrates an internal 220Ω load
resistor for quick output discharge when load switch is
off.

10µs turn on rise time

3.2V to 5.5V bias voltage

Integrated quick output discharge resistor
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.

Thermally enhanced 3mm x 3mm DFN-8L package
– 5mΩ at VBIAS = 5V, VIN = 1.05V, TA = 85°C
Applications

Portable computers

Ultrabooks

Tablet PCs

Set top boxes

LCD TVs

Telecom/Networking/Datacom
equipment

SSD

Consumer electronics
Typical Application
VIN
VOUT
OUT
IN
CIN
CL
IN
OUT
AOZ1334DI-01
VBIAS
VBIAS
OUT
ON
GND
CBIAS
ON
OFF
Rev. 1.0 May 2014
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Page 1 of 12
AOZ1334DI-01
Ordering Information
Part Number
Temperature Range
Package
Environmental
AOZ1334DI-01
-40°C to +85°C
3mm x 3mm DFN-8L
Green
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
IN
1
8
OUT
OUT
8
IN
2
7
OUT
OUT
VBIAS
3
6
OUT
ON
4
5
GND
IN
EPAD
1
IN
7
2
IN
OUT
6
3
VBIAS
GND
5
4
ON
IN
EPAD
3mm x 3mm DFN-8
3mm x 3mm DFN-8
(Top View)
(Bottom View)
Pin Description
Pin Number
Pin Name
1, 2, EPAD
IN
3
VBIAS
4
ON
5
GND
Ground.
6, 7, 8
OUT
Load switch output.
Rev. 1.0 May 2014
Pin Function
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.
Bias Voltage. Power supply input for the device. Recommended voltage range is 3.2V to
5.5V.
Enable Input. Load switch is on when ON is pulled high. Load switch is off when ON is
pulled low. Do not leave floating.
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Page 2 of 12
AOZ1334DI-01
Functional Block Diagram
IN
OUT
IN
OUT
VBIAS
OUT
ON
Control
Logic
GND
Absolute Maximum Ratings
Recommend Operating Ratings
Exceeding the Absolute Maximum ratings may damage the
device.
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Parameter
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
Rating
Supply Voltage (VIN)
VBIAS-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
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
VIN
VBIAS
ID
IPLS
Iq
IOFF
IINOFF
ION
Parameter
IN Supply Voltage
Conditions
VON = 5V
VBIAS Supply Voltage
Min.
Typ.
Max.
Units
0.8
1.05
VBIAS-1.5
V
3.2
5
5.5
V
Maximum Continuous Current
VON = 5V
10
A
Maximum Pulsed Switch Current
VIN = VON = 5V
Pulse < 300µs, 2% Duty Cycle
12
A
Quiescent Supply Current of VBIAS
IOUT = 0V, VON = 5V
35
µA
VBIAS Shutdown Supply Current
VON = 0V, VOUT = 0V
IN Shutdown Supply Current
VON = 0V, VOUT = 0V
2
µA
ON Leakage Current
VON = 5V
1
µA
VONH
ON High Level Voltage
VONL
ON Low Level Voltage
2
1.2
µA
V
0.5
V
Switching ON Resistance
RON
Switch ON-State Resistance
RPD
Output Pull-Down Resistance
Rev. 1.0 May 2014
IOUT = -200mA, VON = 5V,
VBIAS = 5V
3.9
6.3
mΩ
IOUT = -200mA, VON = 5V,
VBIAS = 3.3V
4.6
7.6
mΩ
IOUT = 15mA, VON = 0V
220
300
Ω
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Page 3 of 12
AOZ1334DI-01
Switching Characteristics
VON
50%
50% t
OFF
tON
90%
VOUT
90%
tD-ON
50%
50%
10%
1%
10%
tF
tR
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
tD-ON
Turn-ON Delay time
2
tR
Turn-ON Rise Time
9.5
tOFF
tF
Turn-OFF Time
3
Turn-OFF Fall Time
1
µs
VIN = 1.05V, VBIAS = VON = 5V
tON
Turn-ON Time
8
tD-ON
Turn-ON Delay time
2
tR
Turn-ON Rise Time
8.5
Turn-OFF Time
3.5
tOFF
tF
Rev. 1.0 May 2014
Turn-OFF Fall Time
µs
1
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Page 4 of 12
AOZ1334DI-01
Typical Characteristics
Quiescent Current vs. VBIAS
RDSON vs. VIN
(VIN=VBIAS=VON=5V)
40
(VBIAS=5.5V, IOUT=-200mA)
10
-40ºC
25ºC
70ºC
85ºC
8
RDSON (mΩ)
36
IBIAS (μA)
-40ºC
9
25ºC
70ºC
85ºC
38
34
7
6
5
32
4
30
3
2
28
3.2
3.6
4.0
4.4
VBIAS (V)
4.8
5.2
0.8
5.6
1.2
RDSON vs. VIN
-40ºC
7.0
25ºC
70ºC
85ºC
2.4
VIN (V)
2.8
3.2
3.6
4.0
(TA=25ºC, VIN=2V)
2.5
2.0
6.5
6.0
VOUT (V)
RSDON (mΩ)
7.5
2.0
VOUT vs. VON
(VBIAS=3.2V, IOUT=-200mA)
8.0
1.6
5.5
5.0
1.5
1.0
4.5
VBIAS = 3.2V
0.5
4.0
VBIAS = 4.0V
VBIAS = 5.0V
VBIAS = 5.5V
3.5
0
3.0
0.8
0.9
Rev. 1.0 May 2014
1.0
1.1
1.2
1.3
VIN (V)
1.4
1.5
1.6
1.7
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0.5
0.6
0.7
0.8
VON (V)
0.9
1.0
1.1
Page 5 of 12
AOZ1334DI-01
Typical Characteristics (Continued)
tON vs. VIN
tD-ON vs. VIN
(VBIAS=3.2V)
14
4.5
13
12
-40ºC
4.0
11
25ºC
70ºC
85ºC
3.5
10
-40ºC
tD-ON (μs)
tON (μs)
(VBIAS=5.5V)
5.0
9
8
3.0
25ºC
70ºC
85ºC
2.5
2.0
7
1.5
6
1.0
5
0.5
4
0
0.8
0.9
1.0
1.1
1.2
1.3
VIN (V)
1.4
1.5
1.6
0.8
1.7
1.2
1.6
2.0
tON vs. VIN
2.8
3.2
3.6
4.0
tR vs. VIN
(VBIAS=5.5V)
14
2.4
VIN (V)
(VBIAS=3.2V)
13
12
12
11
10
tR (μs)
tON (μs)
10
8
6
9
8
4
2
-40ºC
7
-40ºC
25ºC
70ºC
85ºC
6
25ºC
70ºC
85ºC
0
5
0.8
1.2
1.6
2.0
8
2.4
VIN (V)
2.8
3.2
3.6
0.8
4.0
0.9
1.0
1.1
1.2
1.3
VIN (V)
1.4
tD-ON vs. VIN
tR vs. VIN
(VBIAS=3.2V)
(VBIAS=5.5V)
18
7
1.5
1.6
1.7
16
6
14
5
25ºC
70ºC
85ºC
4
tR (μs)
tD-ON (μs)
-40ºC
12
10
3
8
2
-40ºC
25ºC
70ºC
85ºC
6
1
4
0
0.8
1.0
Rev. 1.0 May 2014
1.2
1.4
1.6
1.8
VIN (V)
2.0
2.2
2.4
2.6
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0.8
1.2
1.6
2.0
2.4
VIN (V)
2.8
3.2
3.6
4.0
Page 6 of 12
AOZ1334DI-01
Typical Characteristics (Continued)
tOFF vs. VIN
tOFF vs. VIN
(VBIAS=3.2V)
4.0
(VBIAS=5.5V)
5.0
3.5
3.0
-40ºC
4.5
-40ºC
25ºC
70ºC
85ºC
4.0
25ºC
70ºC
80ºC
tOFF (μs)
tOFF (μs)
3.5
2.5
2.0
1.5
3.0
2.5
2.0
1.5
1.0
1.0
0.5
0.5
0
0
0.8
0.9
1.0
1.1
1.2
1.3
VIN (V)
1.4
1.5
1.6
0.8
1.7
1.2
1.6
2.0
tF vs. VIN
2.8
3.2
4.0
(VBIAS=5.5V)
3.0
-40ºC
-40ºC
2.5
25ºC
70ºC
85ºC
2.5
25ºC
70ºC
85ºC
2.0
tF (μs)
2.0
tF (μs)
3.6
tF vs. VIN
(VBIAS=3.2V)
3.0
2.4
VIN (V)
1.5
1.5
1.0
1.0
0.5
0.5
0
0
0.8
0.9
Rev. 1.0 May 2014
1.0
1.1
1.2
1.3
VIN (V)
1.4
1.5
1.6
1.7
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0.8
1.2
1.6
2.0
2.4
VIN (V)
2.8
3.2
3.6
4.0
Page 7 of 12
AOZ1334DI-01
Functional Characteristics
Turn-ON & Turn-ON Rise Times
Turn-ON & Turn-ON Rise Times
(VINX=1.05V, VBIAS=3.2V, CIN=1μF, CL=0.1μF, RL=10Ω)
(VINX=1.05V, VBIAS=5V, CIN=1μF, CL=0.1μF, RL=10Ω)
VON
(5V/div)
VON
(5V/div)
VBIAS
(5V/div)
VBIAS
(5V/div)
VOUT
(200mV/div)
VOUT
(200mV/div)
Turn-OFF & Turn-OFF Fall Times
Turn-OFF & Turn-OFF Fall Times
(VINX=1.05V, VBIAS=3.2V, CIN=1μF, CL=0.1μF, RL=10Ω)
(VINX=1.05V, VBIAS=5V, CIN=1μF, CL=0.1μF, RL=10Ω)
VON
(5V/div)
VON
(5V/div)
VBIAS
(5V/div)
VBIAS
(5V/div)
VOUT
(200mV/div)
VOUT
(200mV/div)
Turn-ON & Turn-OFF at IOUT=-10A
(VINX=1.05V, VBIAS=3.2V, CIN=1μF, CL=0.1μF, RL=0.1Ω)
Turn-ON & Turn-OFF at IOUT=-10A
(VINX=1.05V, VBIAS=5V, CIN=1μF, CL=0.1μF, RL=0.1Ω)
VON
(5V/div)
VBIAS
(5V/div)
Rev. 1.0 May 2014
VON
(5V/div)
VBIAS
(5V/div)
VOUT
(500mV/div)
VOUT
(500mV/div)
IOUT
(5A/div)
IOUT
(5A/div)
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Page 8 of 12
AOZ1334DI-01
Detailed Description
Applications Information
ON/OFF Control
The basic AOZ1334DI-01 application circuit is shown in
the first page. Component selection is explained below.
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.
4.7
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 capacitor must be large enough to supply a fast transient load in
order to prevent the output from dropping.
RDSON (mΩ)
4.5
Thermal Considerations
To ensure proper operation, the maximum junction temperature of the AOZ1334DI-01 should not exceed 150°C.
Several factors attribute to the junction temperate rise:
load current, MOSFET on-resistance, junction-to-ambient thermal resistance, and ambient temperature. The
maximum load current can be determined by:
4.3
VBIAS = 3.3V
VBIAS = 5.0V
VBIAS = 5.5V
4.1
TA = 25ºC
3.9
3.7
I LOAD  MAX  =
3.5
1
2
3
4
5
6
7
8
9
T J  MAX  – T C
-------------------------------------- JC  R DS  ON 
10
IOUT (A)
It is noted that the maximum continuous load current is
10A.
6.0
5.8
Layout Guidelines
RDSON (mΩ)
5.6
Good PCB is important for improving the thermal performance 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 possible for the given PCB space. Use a ground plane to
enhance the power dissipation capability of the device.
5.4
VBIAS = 3.3V
5.2
VBIAS = 5.0V
VBIAS = 5.5V
5.0
TA = 85ºC
4.8
4.6
4.4
4.2
4.0
1
2
3
4
5
6
7
8
9
10
IOUT (A)
Rev. 1.0 May 2014
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Page 9 of 12
AOZ1334DI-01
Package Dimensions, DFN3x3_8L, EP1_S
b1
D
8x
bbb
8
e
b
C A B
8
aaa C 2x
L
E
E1
L
1
1
aaa C 2x
D1
TOP VIEW
Pin1
Identification
BOTTOM VIEW
ccc C
A1
Seating
Plane
A
ddd C
SIDE VIEW
C
RECOMMENDED LAND PATTERN
Symbols Min.
1.60
0.40
0.30
0.30
0.65
1.30
2.60
1.60
Dimensions in millimeters
2.40
UNIT: mm
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
Nom.
0.75
0.02
1.60
0.30
0.203
3.00
2.40
3.00
1.60
0.65 BSC
0.35
0.40
0.20
0.15
0.10
0.10
0.08
Max.
0.80
0.05
1.65
0.35
--3.10
2.45
3.10
1.70
0.45
Dimensions in inches
Symbols Min.
A
A1
b1
b
c
D
D1
E
E1
e
L
R
aaa
bbb
ccc
ddd
Nom.
Max.
0.028
0.000
0.061
0.010
--0.114
0.093
0.114
0.059
0.030 0.031
0.001 0.002
0.063 0.065
0.012 0.014
0.008
--0.118 0.122
0.094 0.096
0.118 0.122
0.063 0.067
0.026 BSC
0.014 0.016 0.018
0.008
0.006
0.004
0.004
0.003
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.
Rev. 1.0 May 2014
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Page 10 of 12
AOZ1334DI-01
Tape and Reel Dimensions, DFN3x3_8L, EP1_S
Carrier Tape
D0
P1
A–A
D1
A
E1
K0
E2
E
B0
A
P2
T
P0
A0
Feeding Direction
UNIT: mm
Package
A0
DFN 3x3_EP
B0
3.40 3.35
±0.10 ±0.10
D0
K0
1.50
1.10
±0.10 +0.10/-0.0
D1
E
E1
E2
P0
P1
P2
T
1.50
+0.10/-0.0
12.00
±0.30
1.75
±0.10
5.50
±0.05
8.00
±0.10
4.00
±0.10
2.00
±0.05
0.30
±0.05
Reel
W1
N
S
G
K
M
V
R
H
W
UNIT: mm
Tape Size Reel Size
M
N
12mm
ø330
ø330.00 ø97.00
±0.50
±0.10
W1
H
K
S
W
13.00 17.40 ø13.00 10.60 2.00
±0.50
±0.30 ±1.00 +0.5/-0.2
G
N/A
R
N/A
V
N/A
Leader / Trailer & Orientation
Unit Per Reel:
5000pcs
Trailer Tape
300mm Min.
Rev. 1.0 May 2014
Components Tape
Orientation in Pocket
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Leader Tape
500mm Min.
Page 11 of 12
AOZ1334DI-01
Package Marking
AOZ1334DI-01
(DFN3x3-8)
1334
Part Number Code
XOAW
Extension Code
LT
Option Code
Year & Week Code
Assembly Lot Code
Assembly Location Code
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.
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.
Rev. 1.0 May 2014
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.
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Page 12 of 12