Protection Switch. AOZ1327DI Datasheet

AOZ1327DI Switch. Datasheet pdf. Equivalent

Part AOZ1327DI
Description Protection Switch
Feature AOZ1327DI ECPower™ 20V 20mΩ Protection Switch with True Reverse Current Blocking General Descriptio.
Manufacture Alpha & Omega Semiconductors
Datasheet
Download AOZ1327DI Datasheet



AOZ1327DI
AOZ1327DI
ECPower™ 20V 20mΩ Protection Switch
with True Reverse Current Blocking
General Description
The AOZ1327DI power switch is intended for applications
that require circuit protections. The input operating voltage
ranges between 3.4V and 22V, making it ideal for USB
Type-C power delivery applications. The VIN terminal is
rated as 28V Absolute Maximum. The AOZ1327DI provides
under-voltage lockout, over-voltage and over-temperature
protection function. The over-voltage protection threshold is
selectable through the POVP pin. The internal soft-start
circuitry controls inrush current due to highly capacitive
loads. The slew rate can be adjusted using an external
capacitor.
The AOZ1327DI has True Reverse-Current Blocking
(TRCB) protection to avoid undesired reverse-current from
VOUT to VIN at all time.
The AOZ1327DI is available in a thermally enhanced 3mm
x 3mm DFN-12 package which can operate over -40°C to
+85°C temperature range.
Features
20mtypical ON resistance
8A continuous current
20A peak current for 10ms @ 2% duty cycle
3.4V to 22V operating input voltage
VIN, VOUT are rated 28V Abs max.
True reverse current blocking
Selectable over-voltage protection
Programmable soft-start
VIN Under-voltage lockout
VIN and VOUT over-voltage lockout
Thermal shutdown protection
±4kV HBM ESD rating
IEC 61000-4-2: ±8kV on VIN
IEC 61000-4-5: 40V on VOUT, No Capacitor
3mm x 3mm DFN-12L package
Applications
Thunderbolt/USB Type-C PD power
switch
Portable devices
Notebook/desktop computers
Monitors
Docking station/dongles
Typical Application
VBUS
USB 
Connector 
GND
Isolated
Thermal
Pad
TVS
Diode
EXP
VIN VOUT
CIN
For 24V OVP POVP
SS
AOZ1327DI
PD 
Controller
ENB
GND
FLTB
COU T
Charger
CSS
5V
RFLTB
Rev. 1.2 April 2020
www.aosmd.com
Page 1 of 16



AOZ1327DI
AOZ1327DI
Ordering Information
Part Number
AOZ1327DI-01
AOZ1327DI-02
Fault Recovery
Auto-Restart
Latch-Off
Temperature Range
-40°C to +85°C
-40°C to +85°C
Package
DFN3x3-12L
DFN3x3-12L
Environmental
RoHS
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
VOUT
VOUT
POVP
FLTB
ENB
GND
Exposed
Pad
VIN
`
VIN
NC
NC
NC
SS
DFN3x3-12L
(Top Transparent View)
Pin Description
Pin Number
1, 2
3
4
5
6
7
8, 9, 10
11, 12
Pin Name
VOUT
POVP
FLTB
ENB
GND
SS
NC
VIN
EXP
EXP
Pin Function
Output pins. Connect to internal load.
Over voltage protection pin. Connect POVP to GND for 24V or leave open for 5.8V OVP.
Fault Indicator, Open-drain output. Active Low when fault condition occurs.
Enable logic input. Active-low.
Ground.
Soft-start pin. Connect a capacitor CSS from SS to GND to set the soft-start time.
No connect. Leave these pins float.
Connect to adapter or power input.
Exposed Thermal Pad. It is the common drain node of the internal back-back sink switches
and it must be electrically isolated. Solder to a metal surface directly underneath EXP and
connect to floating Cu thermal pads on multiple PCB layers through VIAs. For best thermal
performance make the floating Cu pads as large as possible and connect to EXP with multi-
ple VIAs
Rev. 1.2 April 2020
www.aosmd.com
Page 2 of 16





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