AOZ1375DI
ECPower™ 23V 18mΩ Bidirectional Load Switch
with Over-Voltage and Over-Current Protection
General Description
Features
The AOZ1375DI is a bidirectional current-limited load
switch intended for applications that require circuit protections. The device operates from voltages between 3.4V
and 23V and features two power terminals, VINT and
VBUS, which are rated at 28V Absolute Maximum. When
used as source switch, the internal current limiting circuit
protects the supply from large load current. The current
limit can be set with an external resistor. The back-to-back
switch configuration blocks any leakage between VINT
and VBUS pins when the device is disabled.
17.8m typical ON resistance
3.4V to 23V operating input voltage
VINT and VBUS are both rated 28V
Bidirectional operation
Reverse blocking to completely isolate VINT and
VBUS when disabled
Programmable current limit
Short-circuit protection
Selectable over-voltage protection
Programmable soft start
Under-voltage lockout
Over-voltage lockout
Thermal shutdown protection
±4kV HBM ESD rating
±8kV HBM ESD rating for VBUS and VINT
3mm x 3mm DFN-12L package
UL 2367: file no. E495859
IEC 62368-1: file no. E326264
The AOZ1375DI provides over-voltage protection, shortcircuit protection and thermal protection function that limit
excessive power dissipation. The over-voltage protection
threshold is selectable by an external resistor. The internal
soft start circuitry controls inrush current due to highly
capacitive loads. The soft start can be adjusted using an
external capacitor. It consumes less than 5µA in shutdown.
The AOZ1375DI is available in a 3mm x 3mm DFN-12L
package which can operate over -40C to +85C
temperature range.
Applications
Thunderbolt/USB Type-C PD power switch
Notebook/desktop
Monitors
Docking station/dongles
Typical Application
RSENSE
VBUS
VBUS
VINT
CBUS
TVS
Diode
(optional)
USB
Connector
CINT
CSN
ROVP
CSP
POVP
SS
CSS
ILIM
RLIM
Charger
and
DC/DC
AOZ1375DI
5V
RFLTB
EN
FLTB
GND
GND
Rev. 1.5 July 2021
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Page 1 of 17
AOZ1375DI
Ordering Information
Part Number
Fault Recovery
Temperature Range
Package
Environmental
AOZ1375DI-01
Auto-Restart
-40°C to +85°C
3mm x 3mm DFN-12L
RoHS
AOZ1375DI-02
Latch-Off
-40°C to +85°C
3mm x 3mm DFN-12L
RoHS
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
VBUS
EXP
`
VINT
VBUS
VINT
POVP
CSN
FLTB
CSP
EN
ILIM
SS
GND
3mm x 3mm DFN-12L
(Top Transparent View)
Pin Description
Pin Number
Pin Name
1, 2
VBUS
Adapter supply input or output to periphery. Connect to VBUS Connector
3
POVP
Programmable over voltage protection. Connect a resistor ROVP from POVP to GND.
4
FLTB
5
EN
6
GND
7
SS
8
ILIM
Current limit set pin. Connect a resistor RLIM from ILIM to GND to set the switch current limit.
9
CSP
Current sense positive input, connect to a 10mΩ for accurate current sensing. Short to VINT
if current limit is not required
10
CSN
Current sense negative input, connect to a 10mΩ for accurate current sensing. Short to VINT
if current limit is not required
11, 12
VINT
Connect to internal power source or load.
EXP
Exposed Thermal Pad. Connect to GND. Solder to a metal surface directly underneath the
EXP and connect to PCB ground on multiple layers through vias. For best thermal
performance make the ground copper pads as large as possible and connect to EXP with
multiple vias.
EXP
Rev. 1.5 July 2021
Pin Function
Fault Indicator, Open Drain output. Active Low when fault condition occurs.
Enable Input.
Ground.
Soft start pin. Connect a capacitor CSS from SS to GND to set the soft start time.
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Page 2 of 17
AOZ1375DI
Absolute Maximum Ratings(1)
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
Rating
VINT, VBUS, CSP, CSN, to GND
-0.3V to +28V
Supply Voltage (VINT, VBUS)
VINT-CSP, VINT-CSN, CSP-CSN
-0.3V to +0.3V
EN, FLTB
EN, ILIM, SS, FLTB, POVP to GND
-0.3V to +6V
0V to 5.5V
POVP
0V to 3V
DC Switch Current (ISW)
0A to 8A
Junction Temperature (TJ)
+150°C
Storage Temperature (TS)
-65°C to +150°C
ESD Rating HBM All Pins
±4kV
Peak Switch Current (ISW_PK)
10ms @ 2% Duty Cycle
ESD Rating HBM VBUS/VINT
±8kV
Ambient Temperature (TA)
Note:
1.Devices are inherently ESD sensitive, handling precautions are
required. Human body model is a 100pF capacitor discharging
through a 1.5k resistor.
3.4V to 23V
20A
-40°C to +85°C
Package Thermal Resistance
3x3 DFN-12 (JA)
50°C/W
Electrical Characteristics
TA = 25°C, VIN = 20V, unless otherwise specified.
Symbol
VVINT
VVBUS
Parameter
Input Supply Voltage
VUVLO
Under-voltage Lockout Threshold
VUVLO_HYS
Under-voltage Lockout Hysteresis
VOVLO_VINT
VOVLO_VBUS
Over-voltage Lockout Threshold
Conditions
Min.
Typ.
Max.
VINT is input and VBUS is output
3.4
23
VBUS is input and VINT is output
3.4
23
VINT rising, VBUS is output
3.0
3.35
VBUS rising, VINT is output
3.0
3.35
VINT falling, VBUS is output
0.25
VBUS falling, VINT is output
0.25
Units
V
V
V
ROVP =20k1%
23.0
24.0
25.0
ROVP =75k1%
16.8
17.4
18.0
ROVP =137k1%
10.0
10.4
10.8
ROVP =301k1%
6.2
6.4
6.6
V
VOVLO_HYS
Over-voltage Lockout Hysteresis
VINT and VBUS
300
mV
tD_OVP
Over-voltage Turn-off Delay
VINT and VBUS
1
µs
550
µA
IVINT_ON
IVBUS_ON
Input Quiescent Current
VINT=20V, IVBUS =0A, EN=5V
VBUS=20V, IVINT =0A, EN=5V
IVINT_OFF
Input Shutdown Current
VINT=20V, VBUS =Float, EN=OFF
2
5
µA
IVBUS_OFF
Output Leakage Current
VBUS=20V, VINT=Float, EN=OFF
2
5
µA
RON
Switch On Resistance
ILIMIT
Current Limit(2)
Rev. 1.5 July 2021
VINT=20V, IVBUS =1A, RLIM =30k
17.8
mΩ
VINT=5V, IVBUS =1A, RLIM =30k
18.2
mΩ
RLIM =68k (1% Tolerance)
RSENSE =10mΩ (1% Tolerance)
2.0
2.35
2.7
RLIM =47k (1% Tolerance)
RSENSE =10mΩ (1% Tolerance)
3.0
3.4
3.8
RLIM =30k (1% Tolerance)
RSENSE =10mΩ (1% Tolerance)
5.0
5.3
5.6
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A
Page 3 of 17
AOZ1375DI
Electrical Characteristics
TA = 25°C, VIN = 20V, unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
1.4
Units
VEN_H
Enable Input High Voltage
V
VEN_L
Enable Input Low Voltage
IEN_BIAS
Enable Input Bias Current
EN=1.8V
VFLTB_LO
Fault Pull-down Voltage
ISINK =3mA
tD_ON
Turn-On Delay Time
EN to VBUS (10%)
EN to 10% of VBUS, VINT=20V,
CVBUS =68F, CSS =1nF
1600
tON
Turn-On Rise Time
VBUS from 10% to 90%
VBUS rising from 10% to 90%,
VINT=20V, CVBUS =68F, CSS =1nF
400
VSCP
Short-Circuit Protection
VINT - VBUS when VINT =20V
TSD
Thermal Shutdown Threshold
140
TSD_HYS
Thermal Shutdown Hysteresis
35
tOCP
Over Current Response Time
Over current to switch disabled
1
ms
tD_FLTB
FLTB Delay
The time of occurrence of over
current to FLTB going low
500
µs
tREC
FLTB Recover Time
Fault is removed
64
ms
4
0.6
V
10
µA
0.3
V
µs
5
V
°C
Note:
2. Configured such that VINT is input and VBUS is output.
Functional Block Diagram
VINT
VBUS
Gate Drive &
Charge Pump
Soft
Start
SS
FLTB
ILIM
POVP
OVP
Select
Control
Logic
Current
Limit
UVLO
SCP
OVLO
EN
CSN
CSP
VINT
VBUS
GND
Rev. 1.5 July 2021
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Page 4 of 17
AOZ1375DI
Timing Diagrams
ENB
tON
tD_ON
90%
VOUT
10%
Figure 1. Turn-on Delay and Turn-on Time
300m
V
V OVLO_VINT
VINT
VBUS
400us
tD_OVP
10%
tREC
FLTB
Figure 2. OVP Delay and Recovery Time for VINT OVP (AOZ1375DI-01)
Same response for VBUS OVP with VINT and VBUS exchange
VBUS
10%
IVBUS
tOCP
400us
tD_FLTB
FLTB
tREC
Figure 3. OCP and FLTB Time
Rev. 1.5 July 2021
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Page 5 of 17
AOZ1375DI
Typical Characteristics
CIN = 20µF, COUT=120µF, RLOAD=100Ω, CSS=5.6nF, POVP=0V, unless otherwise specified.
VINT
(20V/div)
VINT
(5V/div)
VBUS
(20V/div)
VBUS
(5V/div)
IVBUS
(5A/div)
IVBUS
(5A/div)
EN
(5V/div)
EN
(5V/div)
400µs/div
400µs/div
Figure 4. Turn-On by EN (VINT = 20V)
Figure 5. Turn-On by EN (VINT = 5V)
VINT
(20V/div)
VINT
(5V/div)
VBUS
(20V/div)
VBUS
(5V/div)
IVBUS
(5A/div)
IVBUS
(5A/div)
EN
(5V/div)
EN
(5V/div)
400µs/div
10ms/div
Figure 6. Turn-Off by EN (VINT = 20V)
Figure 7. Turn-Off by EN (VINT = 5V)
VINT
(20V/div)
VINT
(5V/div)
VBUS
(20V/div)
VBUS
(5mV/div)
IVINT
(1A/div)
IVINT
(1A/div)
FLTB
(5V/div)
FLTB
(5V/div)
2µs/div
2µs/div
Figure 8. VINT OVP Operation
with ROVP = 20k
Figure 9. VINT OVP Operation
with ROVP = 180k
Rev. 1.5 July 2021
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Page 6 of 17
AOZ1375DI
Typical Characteristics (Continued)
CIN = 20µF, COUT=120µF, RLOAD=100Ω, CSS=5.6nF, POVP=0V, unless otherwise specified.
VINT
(20V/div)
VINT
(5V/div)
VBUS
(20V/div)
VBUS
(5V/div)
IVINT
(5A/div)
IVINT
(5A/div)
FLTB
(5V/div)
FLTB
(5V/div)
400µs/div
5ms/div
Figure 11. Over-Current Protection
(VINT=5V, RLIM = 30k)
Figure 10. Over-Current Protection
(VINT=20V, RLIM = 30k)
VINT
(20V/div)
VINT
(5V/div)
VBUS
(20V/div)
VBUS
(5V/div)
IVINT
(5A/div)
IVINT
(5A/div)
FLTB
(5V/div)
FLTB
(5V/div)
40ms/div
Figure 12. Short-Circuit Protection
(VINT=20V, RLIM = 30k) (Auto-Restart)
Rev. 1.5 July 2021
40ms/div
Figure 13. Short-Circuit Protection
(VINT=5V, RLIM = 30k) (Auto-Restart)
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Page 7 of 17
AOZ1375DI
Typical Characteristics (Continued)
550
550
500
500
IVBUS_ON (µA)
IVINT_ON (µA)
TA = 25°C, unless otherwise specified.
450
400
300
300
0
5
10
15
20
0
25
5
10
15
20
25
VINT (V)
VBUS (V)
Figure 14. VINT Quiescent Current
vs. VINT Voltage
Figure 15. VBUS Quiescent Current
vs. VBUS Voltage
2.8
2.8
2.6
2.6
2.4
2.4
IVBUS_OFF (µA)
IVINT_OFF (µA)
400
350
350
2.2
2.0
2.2
2.0
1.8
1.8
1.6
1.6
1.4
1.4
0
5
10
15
20
25
0
5
10
15
20
25
VINT (V)
VBUS (V)
Figure 16. VINT Shutdown Current
vs. VINT Voltage
Figure 17. VBUS Shutdown Current
vs. VBUS Voltage
700
700
600
600
IVBUS_ON (µA)
IVINT_ON (µA)
450
500
500
400
400
300
300
-40
-10
25
55
85
-40
-10
25
55
85
Temperature (°C)
Temperature (°C)
Figure 18. VINT Quiescent Current
vs. Temperature (VINT=20V)
Figure 19. VBUS Quiescent Current
vs. Temperature (VBUS=20V)
Rev. 1.5 July 2021
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Page 8 of 17
AOZ1375DI
Typical Characteristics (Continued)
5.0
5.0
4.5
4.5
4.0
4.0
IVBUS_OFF (µA)
IVINT_OFF (µA)
TA = 25°C, unless otherwise specified
3.5
3.0
2.5
3.0
2.5
2.0
2.0
1.5
1.5
1.0
1.0
-40
-10
25
55
85
-40
-10
55
85
Temperature (°C)
Figure 20. VINT Shutdown Current
vs. Temperature (VINT=20V)
Figure 21. VBUS Shutdown Current
vs. Temperature (VBUS=20V)
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0
0
-40
-10
25
55
-40
85
-10
25
55
85
Temperature (°C)
Temperature (°C)
Figure 22. Enable Input Low Voltage
vs. Temperature
Figure 23. Enable Input High Voltage
vs. Temperature
3.30
3.30
3.25
3.25
VUVLO (V)
IUVLO (µA)
25
Temperature (°C)
VEN_H (V)
VEN_L (V)
3.5
3.20
3.15
3.20
3.15
3.10
3.10
-40
-10
25
55
85
-40
-10
25
55
85
Temperature (°C)
Temperature (°C)
Figure 24. UVLO Rise Voltage (VINT)
vs. Temperature
Figure 25. UVLO Rise Voltage (VBUS)
vs. Temperature
Rev. 1.5 July 2021
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Page 9 of 17
AOZ1375DI
Typical Characteristics (Continued)
300
300
280
280
VUVLO_HYS (mV)
VUVLO_HYS (mV)
TA = 25°C, unless otherwise specified
260
240
220
260
240
220
200
200
-40
-10
25
55
85
25
55
85
Temperature (°C)
Figure 26. UVLO Hysteresis Voltage (VINT)
vs. Temperature
Figure 27. UVLO Hysteresis Voltage (VBUS)
vs. Temperature
30
30
ROVP=20k
25
20
ROVP=20k
25
20
ROVP=75k
VOVLO (V)
VOVLO (V)
-10
-40
Temperature (°C)
15
ROVP=137k
10
ROVP=75k
15
ROVP=137k
10
ROVP=301k
ROVP=301k
5
0
-60
5
-40
-20
0
20
40
60
80
100
0
-60
-40
-20
0
20
40
60
80
Temperature (°C)
Temperature (°C)
Figure 28. VINT OVP vs. Temperature
Figure 29. VBUS OVP vs. Temperature
Rev. 1.5 July 2021
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100
Page 10 of 17
AOZ1375DI
Detailed Description
AOZ1375DI is a high-side load switch with adjustable
soft start, over current limit, over-voltage, over
temperature and short-circuit protections. It is capable of
operating from 3.4V to 23V and rated up to 5A.
by comparators that sets the OVP threshold based on
the table below:
ROVP Resistor Value (1%)
OVP Threshold
≤20K
24V
75K
17.4V
137K
10.4V
≥301K
6.4V
AOZ1375DI can be operated as bidirectional switch. As a
source switch it can pass power from VINT to the VBUS.
As a sink switch, it can pass supply from VBUS to VINT.
The devices automatically selects power from either
VINT or VBUS whichever is higher.
The power switch consists of 2 back-to-back connected
N-channel MOSFETs. When switch is enabled, the
overall resistance between VINT and VBUS is only
17.8mΩ in typical condition, minimizing power lose and
thermal dissipation. The back-to-back configuration of
switches completely isolates between VINT and VBUS
when turned off, preventing leakage between the two
pins.
Enable
The EN pin is the ON/OFF control for the power switch.
The device is enabled when EN pin is high and device is
not in UVLO lockout state. The EN pin must be driven to
a logic high or logic low state to guarantee operation.
While disabled, the AOZ1375DI only draws about 2μA
supply current.
Input Under-Voltage Lockout (UVLO)
Programmable Over-Current Protection (OCP)
AOZ1375DI implemented current limit to ensure that the
current through the switch does not exceed the
programmed value. The current passes through the
switch is sensed using external sense resistor RSENSE.
Current limit is programmed by an external resistor RLIM
connected between ILIM and GND. If over-load occur,
the internal circuitry will limit the output current based
on the value of RLIM.
The current limit threshold can be calculated according to
equation below for RSENSE=10mΩ:
Current Limit
5
Rev. 1.5 July 2021
4
3
2
1
20
1) If the power switch is on, it will be turned off
immediately to isolate VINT from VBUS;
An external resistor ROVP connected between POVP
and GND pins sets the over-voltage protection
threshold. An internal 8µA current source biases POVP
pin. The voltage drop across resistor ROVP is detected
A
6
The voltages at both VINT and VBUS pins are
constantly monitored once the device is enabled. In
case voltage on either pin exceeds the programmed
threshold, over-voltage protection is activated:
In either case FLTB pin is pulled low to report the fault
condition.
R LIM k
7
Programmable Over-Voltage Protection (OVP)
2) OVP will prevent power switch to be turned on if it is
in off state.
160
For example, for 5.3A current limit, a 30kΩ RLIM should
be selected.
ILIM (A)
The internal circuitry of AOZ1375DI is powered from
either VBUS or VINT. The under-voltage lockout (UVLO)
circuit of AOZ1375DI monitors the voltage at both pins
and only allows the power switches to turn on when VINT
or VBUS is higher than 3.4V. If both pins are below 3.4V,
the device is in under-voltage lockout state.
Table 1. OVP Setting by External Resistor
40
60
80
120
100
RLIM (k)
Figure 30. Current Limit vs RLIM
The current limit threshold should be within 1A to 6A.
Current limit accuracy or functionality is not guaranteed
beyond this range. 1% resistors are recommended for
both RSENSE and RLIM.
When AOZ1375DI is under current-limiting, FLTB is
pulled low after 500µs delay. The load switch will then
open if the device is still current-limiting after an
additional 500µs delay.
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Page 11 of 17
AOZ1375DI
There is no current limiting function when configured as
sink switch (current flow from VBUS to VINT), but VINT
startup rise time is still controlled by the SS pin.
The actual soft start also depends on the output
capacitance and current limit setting if in-rush current
reaches current-limit level.
If current limit function is not used, both CSP and CSN
pins must be connected to VINT.
System Startup
Short-Circuit Protection (SCP)
AOZ1375DI implemented short-circuit protection to
quickly turn off the power switch when output is severely
overloaded. A comparator monitors the voltage drop
between VINT and VBUS when switch is closed. Shortcircuit protection is activated when the above voltage
difference reaches approximately 75% of VINT. Shortcircuit protection functions in either sourcing or sinking
configuration.
The device is enabled when EN≥1.4V and either VBUS
or VINT is higher than UVLO threshold. The OVP
threshold is first selected by sensing POVP voltage set
by ROVP. The device will then check if fault condition
exist. When no fault exists, the power switch is turned on
and the output is then ramped up, controlled by the soft
start and current limiting circuitry till it reaches input
voltage.
Fault Protection
Short-circuit protection is not active until soft start is
completed.
AOZ1375DI protects its load from the following fault
conditions: over-voltage, over-current, short-circuit, and
over-temperature.
Thermal Shutdown Protection
When device is first enabled, the power switch is off and
fault conditions are checked. If voltage at VBUS or VINT
is higher than the OVP threshold, or die temperature is
higher than thermal shutdown threshold. FLTB pin is
pulled low to report to host controller.
During current limit or short-circuit, the power switch
resistance is increased to limit the load current. This
increases device power dissipation dramatically and
causes the die temperature to rise. When the die
temperature reaches 140°C the power switch is turned
off. There is a 35°C hysteresis. Over-temperature fault is
removed when die temperature drops below
approximately 105°C.
Soft Start
When EN pin is asserted high, the soft start control
circuitry applies voltage on the gate of the power switch
in a manner such that the output voltage is ramped up
linearly until it reaches input voltage level. The soft start
can be adjusted by an external capacitor Css connected
between SS pin and ground. The soft start can be
approximately set by the following equation:
t ss
Css
6E 5 s
VIN
n 2.8E 06 A
V
where, VIN is in volts and Css is in farads and tss is in
seconds. The quantity “n” is a dimensionless number
determined according to the following table. The
recommended Css value is 1.0nF~1.5nF. The Css should
be less than 1.5nF.:
n
VOVP
24
24V or 17.4V
10.4
10.4V
6.4
6.4V
Table 2. n vs. VOVP
Rev. 1.5 July 2021
After the power switch turned on, device continuously
monitors all fault conditions. The switch is turned off
when OVP, short-circuit, or over-temperature is detected.
FLTB pin is pulled low.
In case of over-current, the device will limit the current
pass-through the switch to the value set by RLIM. The
switch is turned off if over-current last approximately
1ms. FLTB pin is pulled low about 500µs after OCP is
detected.
Auto-restart or Latch-off
AOZ1375DI-01 (auto-restart version): The device will
try to restart 64ms after the power switch is turned off
due to fault protection.
AOZ1375DI-02 (latch-off version): The device keeps off
after fault occurs. It can only be re-enabled by either
toggle EN pin or recycle the power.
Input Capacitor Selection
The input capacitor prevents large voltage transients
from appearing at the input, and provides the
instantaneous current needed each time the switch
turns on to charge output capacitors and to limit input
voltage drop. It is also to prevent high-frequency noise
on the power line from passing through to the output.
The input capacitor should be located as close to the
pin as possible. A 10μF ceramic capacitor is
recommended. However, higher capacitor values
further reduce the transient voltage drop at the input.
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AOZ1375DI
Output Capacitor Selection
Layout Guidelines
The output capacitor has to supply enough current for a
large load that it may encounter during system
transient. This bulk capacitor must be large enough to
supply fast transient load in order to prevent the output
from dropping.
Good PCB layout is important for improving the thermal
and overall performance of AOZ1375DI. To optimize the
switch response time to output short-circuit conditions,
keep all traces as short as possible to reduce the effect of
unwanted parasitic inductance. Place the input and
output bypass capacitors as close as possible to the
VINT and VBUS 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. For accuracy current limit during
source mode operation, RSENSE signal must be Kevin
connection to CSP and CSN pin. The sense location for
RSENSE should be as close to the resistor terminal as
possible to reduce the effect of resistance from PCB
trace. Figure 31 shows the evaluation board reference
layout.
There is an upper limit for output capacitor to ensure it
can be charged fully during start-up. This upper limit is
set by the current limit level and soft start time.
Output Capacitor (Max) = Current Limit * (tON / Input Voltage)
If output capacitor is too large that output voltage can’t
reach 75% of the input voltage at the end of soft start
time, short-circuit protection will be triggered.
Power Dissipation Calculation
Calculate the power dissipation for normal load condition
using the following equation:
Power Dissipated = RON × (IOUT)2
The worst case power dissipation occurs when the load
current hits the current limit due to over-current or shortcircuit fault. The power dissipation under these conditions
can be calculated using the following equation:
Power Dissipated = |VINT – VBUS| × Current Limit
Figure 31. Evaluation Board Layout
Rev. 1.5 July 2021
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Page 13 of 17
AOZ1375DI
Package Dimensions, DFN3x3-12L
RECOMMENDED LAND PATTERN
SYMBOLS
UNIT: mm
A
A1
b
b1
c
D
D1
E
E1
e
L
L1
aaa
bbb
ccc
ddd
DIMENSIONS IN MILLIMETERS
MIN
NOM
%6&
%6&
%6&
%6&
DIMENSIONS IN INCHES
MAX
MIN
NOM
%6&
%6&
%6&
%6&
MAX
NOTE
1. DIMENSIONING AND TOLERANCING 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, THE DIMENSION b SHOULD NOT BE
MEASURED IN THAT RADIUS AREA.
4. COPLANARITY ddd APPLIERS TO THE TERMINALS AND ALL OTHER BOTTOM SURFACE
METALLIZATION.
Rev. 1.5 July 2021
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Page 14 of 17
AOZ1375DI
Tape and Reel Dimensions, DFN3x3-12L
Carrier Tape
Reel
Rev. 1.5 July 2021
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Page 15 of 17
AOZ1375DI
Tape and Reel Dimensions, DFN3x3-12L
DFN3x3 EP TAPE
Leader / Trailer & Orientation
Rev. 1.5 July 2021
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Page 16 of 17
AOZ1375DI
Part Marking
AOZ1375DI
(DFN 3mmx3mm)
AA0X
YWLT
Assembly Lot Code
Year & Week Code
Part Number
Option Code (see Table below)
Special Code
Part Number Code
Description
Code
AOZ1375DI-01
Green Product
AA01
AOZ1375DI-02
Green Product
AA02
LEGAL DISCLAIMER
Applications or uses as critical components in life support devices or systems are not authorized. AOS does not
assume any liability arising out of such applications or uses of its products. AOS reserves the right to make changes
to product specifications without notice. It is the responsibility of the customer to evaluate suitability of the product for
their intended application. Customer shall comply with applicable legal requirements, including all applicable export
control rules, regulations and limitations.
AOS' products are provided subject to AOS' terms and conditions of sale which are set forth at:
http://www.aosmd.com/terms_and_conditions_of_sale
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. 1.5 July 2021
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 17 of 17
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