aoz1312 Alpha & Omega Semiconductor, aoz1312 Datasheet

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aoz1312

Manufacturer Part Number
aoz1312
Description
Single Channel Usb Switch
Manufacturer
Alpha & Omega Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
aoz1312EI-1
Manufacturer:
AOS/万代
Quantity:
20 000
General Description
The AOZ1312 is a member of Alpha and Omega
Semiconductor’s single-channel power-distribution
switch family intended for applications where heavy
capacitive loads and short-circuits are likely to be
encountered. This device incorporates a 70 mΩ
N-channel MOSFET power switch for power-distribution
systems. The switch is controlled by a logic enable input.
Gate drive is provided by an internal charge pump
designed to control the power-switch rise time and fall
time to minimize current surges during switching. The
charge pump requires no external components and
allows operation from supplies as low as 2.7 V.
The AOZ1312 is available in an SO-8 or eMSOP-8
package and is rated over the -40 °C to +85 °C ambient
temperature range.
Typical Application
Rev. 1.1 July 2011
V
IN
R1
10kΩ
Cin
IN
OC
EN
AOZ1312
www.aosmd.com
GND
Features
Applications
OUT
Typical 70 mΩ (NFET)
1.5A maximum continuous current
Vin range of 2.7 V to 5.5 V
Open Drain Fault Flag
Fault Flag deglitched (blanking time)
Thermal shutdown
Reverse current blocking
Packages: SO-8 and eMSOP-8
Notebook Computers
Desktop Computers
C2
0.1μF
Single Channel USB Switch
AOZ1312
C1
22μF
LOAD
Page 1 of 13

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aoz1312 Summary of contents

Page 1

... General Description The AOZ1312 is a member of Alpha and Omega Semiconductor’s single-channel power-distribution switch family intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device incorporates a 70 mΩ N-channel MOSFET power switch for power-distribution systems. The switch is controlled by a logic enable input. ...

Page 2

... SO-8 (Top View) Pin Function Ground Input voltage Enable input, logic high turns on power switch, IN-OUT Overcurrent, open-drain output, active low, IN-OUT Power-switch output, IN-OUT No connection www.aosmd.com AOZ1312 Output Package Discharge Environmental SO-8 EPAD MSOP-8 SO-8 EPAD MSOP-8 EPAD SO-8 EPAD SO-8 Green Product ...

Page 3

... V = 5.5 V, I(ENx) -40 °C ≤ I(ENx) No load on OUT 25° I(ENx) -40 °C ≤ 5.5 V I(ENx 5.5V ground °C I(OUTx) J www.aosmd.com AOZ1312 Rating ) +2 +5 -40 °C to +125 ° °C/W 115 °C/W Min. Typ. Max. Units 70 135 0.6 1.5 0.4 1 0.05 0.5 0.05 ...

Page 4

... Rev. 1.1 July 2011 (3) Conditions T = 25° 5mA O(OCx 3.3V O(OCx) OCx assertion or deassertion Gate Driver Current Thermal Shutdown Deglitch www.aosmd.com AOZ1312 Min. Typ. Max. Units 2 2.5 200 0 135 105 30 OUT Limit AOZ1312 Page μA ms °C °C °C ...

Page 5

... Load (Active High 5Ω 100μ 25° 5V/div VOUT 2V/div Figure 6. 0.6Ω Load Connected to Enable to OC 2V/div IOUT 1A/div www.aosmd.com AOZ1312 R = 5Ω 1μ 25°C A 200μs/div R = 5Ω 100μ 25°C A 500μ ...

Page 6

... Vin=3.3V 0.05 Vin=2.7V 0 -50 100 150 Figure 12. UVLO Threshold vs. Junction Temperature 2.22 2.21 2.20 2.19 2.18 2.17 2.16 2.15 Vin=2.7V 2.14 Vin=3.3V 2.13 Vin=5V Vin=5.5V 2.12 2.11 100 150 -50 www.aosmd.com AOZ1312 20ms/div vs. Junction Temperature Vin=5.5V Vin=5V Vin=3.3V Vin=2. 100 150 Junction Temperature (°C) Rising Falling 0 50 100 150 Junction Temperature (°C) Page ...

Page 7

... Detailed Description The AOZ1312 is a member of Alpha and Omega Semiconductor’s single-channel power-distribution switches family. The AOZ1312 is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching ...

Page 8

... OUT LIMIT Layout Guidelines Good PCB layout is important for improving the thermal and overall performance of the AOZ1312. 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 IN and OUT pins ...

Page 9

... A2 1.25 1.50 b 0.31 — c 0.17 — D 4.80 4.90 5.74 E 3.80 3.90 e 1.27 BSC E1 5.80 6.00 h 0.25 — L 0.40 — θ 0 ° — 0.80 UNIT: mm www.aosmd.com AOZ1312 Gauge Plane Seating Plane 0. θ 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 ...

Page 10

... E2 1.60 1.50 12.00 1.75 5.50 ±0.10 ±0.10 ±0.10 ±0.10 ±0. ø97.00 13.00 17.40 ø13.00 ±0.10 ±0.30 ±1.00 +0.50/-0.20 Components Tape Orientation in Pocket www.aosmd.com AOZ1312 Feeding Direction 8.00 4.00 2.00 0.25 ±0.10 ±0.10 ±0.10 ±0. 10.60 2.00 — — — ±0.50 Leader Tape 500mm min. or ...

Page 11

... TYP. E 2.90 3.00 3.10 E1 4.70 4.90 5.10 E2 1.3 — 1.8 L 0.40 0.55 0.70 L1 0.90 0.95 1.00 L2 0.25 BSC θ1 0° — 6° θ2 — 12° — www.aosmd.com AOZ1312 E2 D1 Dimensions in inches Symbols Min. Nom. Max. A 0.032 0.040 0.044 A1 0.002 — 0.006 A2 0.030 0.034 0.038 b 0.010 0.012 0.016 c 0.005 0.006 0.010 D 0.116 0.118 0.120 D1 0.06 — ...

Page 12

... Min. ±0 ø97.00 13.00 17.40 ø13.00 10.60 ± 0.50 ± 0.10 ± 0.30 ± 1.00 +0.50/-0.20 Components Tape Orientation in Pocket www.aosmd.com AOZ1312 Feeding Direction 1.75 5.50 8.00 4.00 2.00 ±0.10 ±0.05 ±0.10 ±0.05 ±0. 2.00 — — — ± 0.50 Leader Tape 500mm min ...

Page 13

... Year Code and Week Code Assembly Lot Code 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 affect its safety or effectiveness. www.aosmd.com AOZ1312 Page ...

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