AOZ1010_0611 AOSMD [Alpha & Omega Semiconductors], AOZ1010_0611 Datasheet

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AOZ1010_0611

Manufacturer Part Number
AOZ1010_0611
Description
Manufacturer
AOSMD [Alpha & Omega Semiconductors]
Datasheet
General Description
The AOZ1010 is a high efficiency, simple to use, 2A buck
regulator. The AOZ1010 works from a 4.5V to 16V input
voltage range, and provides up to 2A of continuous
output current with an output voltage adjustable down to
0.8V.
The AOZ1010 comes in an SO-8 package and is rated
over a -40°C to +85°C ambient temperature range.
Typical Application
Rev. 1.0 November 2006
Cd
C C
R C
C1
22µF Ceramic
Figure 1. 3.3V/2A Buck Regulator
EN
COMP
www.aosmd.com
AGND
AOZ1010
VIN
PGND
Features
Applications
4.5V to 16V operating input voltage range
130m Ω internal PFET switch for high efficiency:
up to 95%
Internal Schottky diode
Internal soft start
Output voltage adjustable to 0.8V
2A continuous output current
Fixed 500kHz PWM operation
Cycle-by-cycle current limit
Short-circuit protection
Thermal shutdown
Small size SO-8 package
Point of load DC/DC conversion
PCIe graphics cards
Set top boxes
DVD drives and HDD
LCD panels
Cable modems
Telecom/networking/datacom equipment
LX
FB
L1
3.3µH
EZBuck™ 2A Simple Regulator
R1
R2
AOZ1010
VOUT
C2, C3
22µF Ceramic
Page 1 of 14

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AOZ1010_0611 Summary of contents

Page 1

General Description The AOZ1010 is a high efficiency, simple to use, 2A buck regulator. The AOZ1010 works from a 4.5V to 16V input voltage range, and provides continuous output current with an output voltage adjustable down ...

Page 2

Ordering Information Part Number Ambient Temperature Range AOZ1010AI -40°C to +85°C All AOS Products are offering in packaging with Pb-free plating and compliant to RoHS standards. Please visit wwww.aosmd.com/web/rohs_compliant.jsp Pin Configuration Pin Description Pin Number Pin Name 1 PGND Power ...

Page 3

Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter Supply Voltage (V ) 18V AGND -0. AGND -0. AGND -0. COMP to AGND ...

Page 4

Typical Performance Characteristics Circuit of Figure 25° 12V Light Load (DCM) Operation 1µs/div Startup to Full Load 1ms/div 50% to 100% Load Transient 100µs/div Rev. 1.0 November 2006 = ...

Page 5

Typical Performance Characteristics Circuit of Figure 25° 12V Short Circuit Protection 100µs/div 100 Thermal de-rating curves for SO-8 package part under typical input and ...

Page 6

Detailed Description The AOZ1010 is a current-mode step down regulator with integrated high side PMOS switch and a low side freewheeling Schottky diode. It operates from a 4.5V to 16V input voltage range and supplies load ...

Page 7

The combination of R and R should be large enough avoid drawing excessive current from the output, which will cause power loss. Since the switch duty cycle can be as high as 100%, the maximum output voltage ...

Page 8

I (m) CIN_RMS I O 0.2 0 0.5 m Figure 2. I vs. Voltage Conversion Ratio CIN For reliable operation and best performance, the input capacitors must have current rating higher than I at the ...

Page 9

Output Capacitor The output capacitor is selected based on the DC output voltage rating, output ripple voltage specification, and ripple current rating. The selected output capacitor must have a higher rated voltage specification than the maximum desired output voltage including ...

Page 10

The zero given by the external compensation network, capacitor Figure 1), and resistor Figure 1), is located at ------------------------------------ - Z 2 × × 2π design ...

Page 11

The junction to ambient temperature can be got from power dissipation in the AOZ1010 and thermal imped- ance from junction to ambient – P (jun-amb) totalloss inductorloss The maximum junction temperature of AOZ1010 is 145°C, which ...

Page 12

Package Dimensions, SO- 7° (4x) 0.1 b 2.20 5.74 1.27 0.80 Unit: mm Notes: 1. All dimensions are in millimeters. 2. Dimensions are inclusive of plating 3. Package body sizes exclude mold flash and ...

Page 13

Tape and Reel Dimensions SO-8 Carrier Tape D1 T See Note Unit: mm Package SO-8 6.40 5.20 2.10 1.60 ±0.10 ±0.10 ±0.10 ±0.10 (12mm) SO-8 Reel Tape Size Reel ...

Page 14

AOZ1010 Package Marking Fab & Assembly Location Rev. 1.0 November 2006 Z1010AI Part Number Code FAY WLT Assembly Lot Code Year & Week Code www.aosmd.com AOZ1010 Page ...

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