AiT Semiconductor Inc.
A7231A
DC-DC CONVERTER BUCK (STEP-DOWN)
500kHz, 3A, 16V SYNCHRONOUS
www.ait-ic.com
DESCRIPTION
FEATURES
The A7231A is a fully integrated, high-efficiency 3A
synchronous rectified step-down converter. The
A7231A operates at high efficiency over a wide
output current load range.
High Efficiency: Up to 96%
500kHz Frequency Operation
3A Output Current
No Schottky Diode Required
This device offers two operation modes, PWM
control and PFM Mode switching control, which
allows a high efficiency over the wider range of the
load.
4.2V to 16V Input Voltage Range
0.8V Reference
Slope Compensated Current Mode Control for
Excellent Line and Load Transient Response
Integrated internal compensation
Stable with Low ESR Ceramic Output
Capacitors
The A7231A is available in SOT-26 package.
Over Current Protection with Hiccup-Mode
Thermal Shutdown
ORDERING INFORMATION
Inrush Current Limit and Soft Start
-40°C to +85°C Temperature Range
Available in SOT-26 Package
Package Type
Part Number
A7231AE6R
A7231AE6VR
SOT-26
E6
APPLICATION
SPQ: 3,000pcs/Reel
V: Halogen free Package
R: Tape & Reel
Distributed Power Systems
Note
Digital Set Top Boxes
Flat Panel Television and Monitors
Wireless and DSL Modems
Notebook Computer
AiT provides all RoHS products
TYPICAL APPLICATION
Figure 1.
Figure 2.
NOTE1: C1 and C2 recommended using 22uF ceramic capacitors. If the electrolytic capacitor is used, it is recommended that the ceramic
capacitor in parallel with a capacitance value of 0.1uF or more.
2: The resistance R3 in Figure 1 makes the loop more stable. If it isn’t used, the resistance R1、R2 should be adjusted(See Figure2.).
The value of R1 is recommended to be about 300kΩ.
3: C3 can be valued as 1uF, 0.1uF.
REV1.0
- MAY 2018 RELEASED -
- 1 -
AITSEMI [ AiT Semiconductor ]
