aoz1300 Alpha & Omega Semiconductor, aoz1300 Datasheet

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aoz1300

Manufacturer Part Number
aoz1300
Description
Programmable 4a Power Distribution Switch
Manufacturer
Alpha & Omega Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
aoz1300AI
Manufacturer:
AOS/万代
Quantity:
20 000
Part Number:
aoz1300AIL
Manufacturer:
AOS/万代
Quantity:
20 000
General Description
The AOZ1300 is a current-limited power distribution
switch intended for applications that require circuit
protection. The device operates from a 2.7V to 5.5V
input supply and provides up to 4A load current.
AOZ1300 offers robust fault protection features including
over-current/short-circuit protection and thermal overload
protection. The current limit is programmable with an
external resistor. An open-drain fault indicator is provided
to alert a system controller of thermal overload, over-
current, and short-circuit events. A 24ms fault blanking
time eliminates false alarms.
The AOZ1300 employs internal soft-start circuitry to
control inrush current due to highly capacitive loads
associated with hot-plug events. An adjustable slew rate
control pin provides additional slew rate control if needed.
The AOZ1300 is available in SO-8 package.
Typical Application
Rev. 1.2 June 2008
VIN
FAULT
OFF
C1
1µF
ON
R1
100kΩ
Figure 1. High Current USB Host
C3
10nF
EN
FLT
IN
SLEW
www.aosmd.com
AOZ1300
Features
Applications
Programmable 4A Power Distribution Switch
ISET
40m maximum on-resistance
4A maximum continuous current
2.7V to 5.5V operating voltage
Resistor programmable current limit
Reverse current blocking
Thermal overload protection
Very fast short-circuit response time
Fault latch with 24ms blanking time
Open-drain fault indicator
1µA shutdown current
Docking stations
Notebook PCs
RAID systems
Telecom and Server hot-plug
USB Power Distribution
Compact PCI adapter Cards
OUT
GND
R2
10kΩ
C2
4.7µF
VOUT
AOZ1300
TO USB
PORT
Page 1 of 12

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aoz1300 Summary of contents

Page 1

... The AOZ1300 employs internal soft-start circuitry to control inrush current due to highly capacitive loads associated with hot-plug events. An adjustable slew rate control pin provides additional slew rate control if needed. The AOZ1300 is available in SO-8 package. Typical Application VIN C1 1µF ...

Page 2

... Fault Indicator. FLT is an open-drain output. FLT is asserted low during over-current or thermal overload events. FLT is asserted after the fault blanking period. Internally Connected Pin. No external connection is allowed to this pin. Leave this pin floating. Switch Output Pin. www.aosmd.com AOZ1300 Environmental SO-8 RoHS Compliant SO-8 Green Product ...

Page 3

... 1µ 1µ 1µ 1µ www.aosmd.com AOZ1300 Rating ) +2.7V to +5.5V IN -40°C to +85°C (1) ) 87°C measured with the device mounted on 1-in Min. Typ. Max. Units 2.7 5.5 V 380 530 ...

Page 4

... On Resistenace vs. Temperature 100 -40 -20 Turn-On Delay vs. Temperature 1.50 1.40 1.30 1.20 1.10 1.00 0.90 0.80 0. 100 -40 -20 www.aosmd.com AOZ1300 5.5V 3.6V 2. 100 Temperature (°C) 2.5V, 3.6V, 5. 100 Temperature (C) 2.5V 3.6V 5. 100 Temperature (°C) 2.5V 3.6V 5. 100 Temperature (°C) ...

Page 5

... I OUT 5A/div Time (4ms/div.) Rev. 1.2 June 2008 EN 5V/div V OUT 2V/div I OUT 1A/div Time (200µs/div.) Short Circuit Response V OUT 5V/div FLT 5V/div I OUT 1A/div Time (4ms/div.) UVLO Response V IN 5V/div V OUT 5V/div Time (20ms/div.) www.aosmd.com AOZ1300 Turn-Off Page ...

Page 6

... Functional Block Diagram IN 2.3V UVLO Comparator EN FLT Rev. 1.2 June 2008 90 Active-High Enable t FLT Over-current Fault Output Response Switch Gate Driver & Charge Pump Slew Rate Control Fault Delay & Latch www.aosmd.com AOZ1300 50% 10% t OFF OUT SLEW ISET Current Limit Thermal Shutdown Page ...

Page 7

... IN Over-Current and Short-Circuit Protection The AOZ1300 is designed to shut off all power to the load when the output current exceeds the limit for more than the fault blanking period. In the event of an output short circuit the current through the switch is limited by an internal current-limiting amplifi ...

Page 8

... Capacitance (µF) Rev. 1.2 June 2008 Current Limit Setting The AOZ1300 features internal current-limiting circuitry with a maximum programmable value of 4.0A. This current limit remains in effect throughout the input supply-voltage range. The current limit is program by using external resistor connected to the ISET pin. The current-limit adjustment resistor range is from 70k to 600k ...

Page 9

... It is recommended to use a PCB with at least two sides very important to place the input and output capacitor as close as possible to the pin of the device. Rev. 1.2 June 2008 Silk Screen Top Top Layer Bottom Layer www.aosmd.com AOZ1300 Page ...

Page 10

... Nom. A 1.35 1.65 A1 0.10 — A2 1.25 1.50 b 0.31 — c 0.17 — D 4.80 4.90 E1 3.80 3.90 e 1.27 BSC E 5.80 6.00 h 0.25 — L 0.40 — 0.80 0 — www.aosmd.com AOZ1300 Gauge Plane Seating Plane 0. Dimensions in inches Max. Symbols Min. Nom. Max. 1.75 A 0.053 0.065 0.069 0.25 A1 0.004 — 0.010 1.65 A2 0.049 0.059 0.065 0.51 b 0.012 — 0.020 0.25 c 0.007 — ...

Page 11

... Rev. 1.2 June 2008 P1 See Note 1.50 12.00 1.75 5.50 8.00 4.00 0.10 0.10 0.10 0.10 0. 13.00 17.40 ø13.00 10.60 2.00 0.30 1.00 +0.50/-0.20 0.50 Components Tape Leader Tape Orientation in Pocket 500mm min. or 125 empty pockets www.aosmd.com AOZ1300 See Note 3 Feeding Direction 2.00 0.25 0.10 0.10 0. — — — Page ...

Page 12

... Package Marking Fab & Assembly Location Rev. 1.2 June 2008 Z1300AI Part Number Code FAY WLT Underscore Denotes Green Product Assembly Lot Code Year & Week Code www.aosmd.com AOZ1300 Page ...

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