AOZ1037PI Alpha & Omega Semiconductor Inc, AOZ1037PI Datasheet

IC BUCK SYNC ADJ 5A SO8

AOZ1037PI

Manufacturer Part Number
AOZ1037PI
Description
IC BUCK SYNC ADJ 5A SO8
Manufacturer
Alpha & Omega Semiconductor Inc
Series
EZBuck™r
Type
Step-Down (Buck), PWM - Current Moder
Datasheet

Specifications of AOZ1037PI

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-SOIC (0.154", 3.90mm Width) Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
785-1256-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AOZ1037PI
Manufacturer:
AOS
Quantity:
884
Part Number:
AOZ1037PI
Manufacturer:
AOS/万代
Quantity:
20 000
General Description
The AOZ1037 is a high efficiency, simple to use, 5A
synchronous buck regulator. The AOZ1037 works from a
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 AOZ1037 comes in an exposed pad SO-8 packages
and is rated over a -40°C to +85°C ambient temperature
range.
Typical Application
Rev. 1.1 September 2010
VIN
C1
22µF
Figure 1. 3.3V/5A Synchronous Buck Regulator
R
C
C
C
EN
COMP
AGND
VIN
www.aosmd.com
AOZ1037
Features
Applications
PGOOD
PGND
4.5 to 18V operating input voltage range
Synchronous rectification: 55m
switch and 19m
High efficiency: up to 95%
Internal soft start
Active high power good state
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
Exposed pad SO-8 package
Point of load DC/DC conversion
LCD TVs
Set top boxes
DVD / Blu-ray players/recorders
Cable modems
PCIe graphics cards
Telecom/Networking/Datacom equipment
R3
EZBuck™ 5A Synchronous Buck Regulator
LX
5V
FB
L1 4.7µH
Internal low-side switch
R1
R2
AOZ1037
VOUT
internal high-side
C2, C3
22µF
Page 1 of 14

Related parts for AOZ1037PI

AOZ1037PI Summary of contents

Page 1

General Description The AOZ1037 is a high efficiency, simple to use, 5A synchronous buck regulator. The AOZ1037 works from a 4.5V to 18V input voltage range, and provides continuous output current with an output voltage adjustable ...

Page 2

... Ordering Information Part Number Ambient Temperature Range AOZ1037PI -40°C to +85°C 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 Pin Description Pin Number Pin Name 1 PGND Power ground. PGND needs to be electrically connected to AGND. ...

Page 3

Block Diagram UVLO EN & POR Reference Softstart & Bias + 0.8V EAmp FB – COMP Short Circuit Detection Comparator + – 0.2V PGOOD – + 0.72V Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter ...

Page 4

Electrical Characteristics T = 25° 12V 3.3V unless otherwise specified OUT Symbol Parameter V Supply Voltage IN V Input Under-Voltage Lockout Threshold UVLO I Supply Current (Quiescent Shutdown Supply ...

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 AOZ1037 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

Some standard value of R1, R2 and most used output voltage values are listed in Table 1. Table 1. Ω 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 ...

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

For lower output ripple voltage across the entire operating temperature range, X5R or X7R dielectric type of ceramic, or other low ESR tantalum are recommended to be used as output capacitors buck converter, output capacitor current is continuous. ...

Page 11

For best performance set to be about 1/10 of the switching frequency 0.8V the error amplifier transconductance, which is 200 A/V, ...

Page 12

Package Dimensions, SO-8 EP1 (4x) B RECOMMENDED LAND PATTERN 3.70 2.20 2.71 2.87 0.80 1.27 0.635 UNIT: mm Notes: 1. Package body sizes exclude mold flash and gate burrs. 2. Dimension L is measured ...

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 Size ...

Page 14

Part Marking Fab & Assembly Location This data sheet 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 SUPPORT POLICY ALPHA ...

Related keywords