AOZ1036DI Alpha & Omega Semiconductor Inc, AOZ1036DI Datasheet

IC BUCK SYNC ADJ 5A 8DFN

AOZ1036DI

Manufacturer Part Number
AOZ1036DI
Description
IC BUCK SYNC ADJ 5A 8DFN
Manufacturer
Alpha & Omega Semiconductor Inc
Series
EZBuck™r
Type
Step-Down (Buck), PWM - Current Moder
Datasheet

Specifications of AOZ1036DI

Featured Product
The AOZ103x Family Synchronous Buck Regulator
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.8 V ~ 18 V
Current - Output
5A
Frequency - Switching
500kHz
Voltage - Input
4.5 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-VDFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
785-1255-2
General Description
The AOZ1036 is a high efficiency, easy to use, 5A
synchronous buck regulator. The AOZ1036 works from
4.5V to 18V input voltage range, and provides up to 5A of
continuous output current with an output voltage
adjustable down to 0.8V.
The AOZ1036 comes in both a 5x4 DFN-8 and an
exposed pad SO-8 package and is rated over a
-40°C to +85°C ambient temperature range.
Typical Application
Rev. 1.1 September 2010
VIN
C1
22µF
Ceramic
R
C
C
C
Figure 1. 3.3V 5A Synchronous Buck Regulator
EN
COMP
AGND
VIN
AOZ1036
www.aosmd.com
PGND
Features
Applications
LX
FB
4.5V to 18V operating input voltage range
Synchronous Buck: 55mΩ internal high-side switch
and 19mΩ Internal low-side switch
High efficiency: up to 95%
Internal soft start
Output voltage adjustable to 0.8V
5A continuous output current
Fixed 500kHz PWM operation
Cycle-by-cycle current limit
Pre-bias start-up
Short-circuit protection
Thermal shutdown
Thermally enhanced 5x4 DFN-8 and exposed pad
SO-8 packages
Point of load DC/DC converters
LCD TV
Set top boxes
DVD / Blu-ray players/recorders
Cable modems
PCIe graphics cards
EZBuck™ 5A Synchronous Buck Regulator
L1
4.7µH
R1
R2
AOZ1036
VOUT
C2, C3
22µF
Ceramic
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Related parts for AOZ1036DI

AOZ1036DI Summary of contents

Page 1

General Description The AOZ1036 is a high efficiency, easy to use, 5A synchronous buck regulator. The AOZ1036 works from 4.5V to 18V input voltage range, and provides continuous output current with an output voltage adjustable down ...

Page 2

... Ordering Information Part Number Ambient Temperature Range AOZ1036DI AOZ1036PI AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs_compliant.jsp Pin Configuration PGND 1 LX VIN 2 AGND 3 GND FB 4 5x4 DFN-8 (Top View) Pin Description Pin Number Exposed ...

Page 3

Block Diagram UVLO 5V LDO EN & POR Regulator Reference Softstart & Bias + 0.8V EAmp FB – COMP Short Circuit Detection Comparator + – 0.2V Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter Supply ...

Page 4

Electrical Characteristics T = 25° 12V 3.3V unless otherwise specified. Specifications in BOLD indicate a temperature range OUT -40°C to +85°C. Symbol Parameter V Supply Voltage IN V Input Under-voltage ...

Page 5

Typical Performance Characteristics Circuit of Figure 25° Light Load Operation 2ms/div Start Up to Full Load 1ms/div Rev. 1.1 September 2010 = 12V 3.3V unless otherwise specified. EN OUT Full ...

Page 6

Efficiency 100% 90% 80% 70% 60% 50% 40% 0 100% 90% 80% 70% 60% 50% 40% 0 Rev. 1.1 September 2010 Efficiency (V = 12V) vs. Load Current IN 5V OUTPUT 3.3V OUTPUT 1.8V OUTPUT 1.2V OUTPUT 0.5 1 1.5 ...

Page 7

Detailed Description The AOZ1036 is a current-mode step down regulator with integrated high-side PMOS switch and a low-side NMOS switch. It operates from a 4.5V to 18V input voltage range and supplies load current. Features include ...

Page 8

Table 1. Vo (V) R1 (kΩ) 0.8 1.0 1.2 4.99 1.5 10 1.8 12.7 2.5 21.5 3.3 31.1 5.0 52.3 The combination of R1 and R2 should be large enough to avoid drawing excessive current from the output, which will ...

Page 9

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 worst ...

Page 10

In a buck converter, output capacitor current is continuous. The RMS current of output capacitor is decided by the peak to peak inductor ripple current. It can be calculated by: ΔI L ---------- I = CO_RMS 12 Usually, the ripple ...

Page 11

The compensation capacitor C and resistor R C make a zero. This zero is put somewhere close to the dominate pole f but lower than 1/5 of selected p1 crossover frequency. C can is selected by: C 1.5 ----------------------------------- C ...

Page 12

Package Dimensions, 5x4 DFN-8 D aaa C TOP VIEW ccc C A ddd SIDE VIEW RECOMMENDED LAND PATTERN Notes: 1. Dimensions and tolerancing conform to ASME Y14.5M-1994. 2. All dimensions are in millimeters. 3. The location of ...

Page 13

Tape Dimensions, 5x4 DFN-8 Tape UNIT: mm Package DFN 5x4 5.30 4.30 1.20 ±0.10 ±0.10 ±0.10 (12 mm) Leader/Trailer and Orientation Trailer Tape 300mm Min. Rev. 1.1 September 2010 ...

Page 14

Reel Dimensions, 5x4 DFN-8 Reel M Tape Size Reel Size M ø330 12mm ø330 +0.3 -4.0 6.45±0.05 6.2 8.9±0.1 14 REF 11.90 41.5 REF 43.00 44.5±0.1 10.0 A 2.00 6.50 Rev. 1.1 September 2010 12.40 2.40 ...

Page 15

Package Dimensions, Exposed Pad SO 7° (4x) B RECOMMENDED LAND PATTERN 3.70 2.20 2.71 2.87 1.27 0.635 UNIT: mm Notes: 1. Package body sizes exclude mold flash and gate burrs. 2. Dimension L is measured ...

Page 16

Tape and Reel Dimensions, Exposed Pad SO-8 Carrier Tape UNIT: mm Package A0 B0 SO-8 6.40 5.20 ±0.10 ±0.10 (12mm) Reel R UNIT: mm Tape Size Reel Size M 12mm ø330 ø330.00 ±0.50 Leader/Trailer and Orientation ...

Page 17

Part Marking Fab & Assembly Location Fab & Assembly Location This datasheet contains preliminary data; supplementary data may be published at a later date. Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE ...

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