AOZ6662DI Regulator Datasheet

AOZ6662DI Datasheet, PDF, Equivalent


Part Number

AOZ6662DI

Description

2A Synchronous Buck Regulator

Manufacture

Alpha & Omega Semiconductors

Total Page 14 Pages
Datasheet
Download AOZ6662DI Datasheet


AOZ6662DI
AOZ6662DI
EZBuckTM 2A Synchronous Buck Regulator
General Description
The AOZ6662DI is a high efficiency, easy to use, 2A
synchronous buck regulator at high switching frequency
for small form factor solution. The AOZ6662DI works
from 4.5V to 18V input voltage range, and provides up to
2A of continuous output current with an output voltage
adjustable down to 0.6V.
The AOZ6662DI comes in a DFN 3mm x 3mm package
and is rated over a -40°C to +85°C operating ambient
temperature range.
Features
4.5V to 18V operating input voltage range
Synchronous Buck: 145minternal high-side switch
and 90mInternal low-side switch
Up to 95% efficiency
Pulse Energy Mode for light load efficiency. (Vin=12V,
Vo=5V, 87%@10mA)
Output voltage adjustable to 0.6V
2A continuous output current
750kHz PWM operation
External compensation
Internal Soft Start
Cycle-by-cycle current limit
Pre-bias start-up
Short-circuit protection
Thermal shutdown
Applications
High reliable DC/DC converters
High performance LCD TV
High performance cable modems
Typical Application
VIN
CIN
10µF
VIN
BST
EN EN AOZ6662DI LX
COMP
RC
VCC GND
FB
CC C4
1µF
CBST
L1 (min)
2.2µH
R1
R2
VOUT
C2,C3
22µF
Rev. 1.1 June 2018
Figure 1. 2A Synchronous Buck Regulator, Fs = 750 kHz
www.aosmd.com
Page 1 of 14

AOZ6662DI
Ordering Information
Part Number
AOZ6662DI
Ambient Temperature Range
-40°C to +85°C
Package
8-Pin 3mm x 3mm DFN
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information.
Pin Configuration
GND 1
LX 2
VIN 3
COMP 4
Thermal
PAD (9)
8 BST
7 EN
6 FB
5 VCC
8-Pin 3mm x 3mm DFN
(Top View)
Top Transparent View
AOZ6662DI
Environmental
RoHS
Pin Description
Pin Number
1
2
Pin Name
GND
LX
3 VIN
4 COMP
5 VCC
6 FB
7 EN
8 BST
9 Thermal PAD
Pin Function
System ground.
Switching output.
Supply voltage input. When VIN rises above the UVLO threshold and EN is logic high, the
device starts up.
External Loop Compensation Pin. Connect a RC network between COMP and GND to
compensate the control loop.
The output of LDO. 1µF decoupling capacitor needs added.
Feedback input. The FB pin is used to set the output voltage via a resistor voltage divider
between the output and GND.
Enable input. Pull up EN to logic high will enable the device. Pull EN to logic low will
disable the device. EN pin must be connected to VIN if no Enable control is required.
Bootstrap input. Connect a capacitor to LX. Typical value is 0.1µF.
This thermal pad must be connected to GND for normal operation.
Rev. 1.1 June 2018
www.aosmd.com
Page 2 of 14


Features AOZ6662DI EZBuckTM 2A Synchronous Buck R egulator General Description The AOZ66 62DI is a high efficiency, easy to use, 2A synchronous buck regulator at high switching frequency for small form fact or solution. The AOZ6662DI works from 4 .5V to 18V input voltage range, and pro vides up to 2A of continuous output cur rent with an output voltage adjustable down to 0.6V. The AOZ6662DI comes in a DFN 3mm x 3mm package and is rated over a -40°C to +85°C operating ambient t emperature range. Features  4.5V to 18V operating input voltage range  Synchronous Buck: 145mΩ internal high -side switch and 90mΩ Internal low-si de switch  Up to 95% efficiency  Pulse Energy Mode for light load effici ency. (Vin=12V, Vo=5V, 87%@10mA)  Ou tput voltage adjustable to 0.6V  2A continuous output current  750kHz PW M operation  External compensation Internal Soft Start  Cycle-by-cyc le current limit  Pre-bias start-up  Short-circuit protection  Thermal shutdown Applications  High reliable DC/DC converter.
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