aoz1214 Alpha & Omega Semiconductor, aoz1214 Datasheet - Page 2

• Manufacturer Part Number: aoz1214
• Description: Ezbuck 3atm Simple Buck Regulator With Linear Controller
• Manufacturer: Alpha & Omega Semiconductor

Ordering Information
Pin Configuration
Pin Description
Rev. 1.0 December 2010
Number
Part Number
Pin
AOZ1214DI
10
12
11
1
2
3
4
5
6
7
8
9
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit
Name
COMP
PGND
AGND
www.aosmd.com/web/quality/rohs_compliant.jsp
LDRV
BIAS
BST
EN1
EN2
FB1
FB2
Pin
LX
IN
Ambient Temperature Range
Analog Ground.
Buck Regulator Switching Node.
Buck Regulator Bootstrap Pin. BST is the high side driver supply. Connect a 0.1μF capacitor
between BST and LX to form a bootstrap circuit.
Power Ground.
Enable1 input for buck regulator. EN1 is active high. Connect EN1 to IN if not used. Do not leave
EN1 floating.
Enable2 input for linear regulator. EN2 is active high.
Buck Regulator Feedback Input. FB1 is regulated to 0.8V. Set the buck regulator output voltage
using a resistive voltage divider.
Buck Regulator Compensation Pin. COMP is the output of the internal transconductance error
amplifier. Connect a RC network between COMP and GND to compensate the control loop.
Linear Regulator Feedback Input. FB2 is regulated to 0.8V. Set the linear regulator output voltage
using a resistive voltage divider.
Linear Regulator Drive Output. LDRV controls the gate of an external pass transistor.
Internal Bias Regulator Output. Connect a 1μF between BIAS and GND.
Input Supply Pin. The input range is between 4.5V and 28V.
-40°C to +85°C
PGND
BST
EN1
EN2
FB1
LX
1
2
3
4
5
6
www.aosmd.com
(Top View)
DFN-12
AGND
IN
for additional information.
4x3 DFN-12L
Package
Pin Function
12
11
10
9
8
7
IN
BIAS
AGND
LDRV
FB2
COMP
Environmental
Green Product
AOZ1214
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