AiT Semiconductor Inc.
A7231A
DC-DC CONVERTER BUCK (STEP-DOWN)
500kHz, 3A, 16V SYNCHRONOUS
www.ait-ic.com
ABSOLUTE MAXIMUM RATINGS
VIN, Supply Voltage
-0.3V ~ 17V
-0.3V to (VIN+0.5V)
VSW-0.3V to VSW+5V
-0.3V ~ 17V
VSW, Switch Node Voltage
VBST, Boost Voltage
VEN, Enable Voltage
All Other Pins
-0.3V ~ 6V
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10s)
-40ºC ~ +85ºC
-65ºC ~ +150ºC
300ºC
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
VIN=12V, VOUT=5V, TA=25℃, unless otherwise stated
Parameter
Input Voltage Range
Conditions
Min
Typ
-
Max
Unit
V
4.2
16
UVLO Threshold
-
4.1
0.5
5
-
V
Supply Current in Operation
Supply Current in Shutdown
Regulated Feedback Voltage
High-side Switch On Resistance
Low-side Switch On Resistance
High-side Switch Leakage Current
Upper Switch Current Limit
Oscillation Frequency
VEN = 2.0V, VFB = 1.1V
VEN = 0V or VEN = GND
4.2V≤VIN ≤16V
-
-
mA
uA
V
-
10
0.784
0.8
120
60
0
0.816
VBST-SW = 5V
-
-
m Ω
m Ω
uA
A
VIN = 5V
-
-
VEN = 0V, VSW = 0V
Minimum Duty Cycle
-
10
-
6
-
-
500
92
100
-
-
kHz
%
Maximum Duty Cycle
VFB = 0.7V
-
-
-
-
Minimum On Time
ns
V
EN Input Voltage “H”
1.5
-
-
EN Input Voltage “L”
-
0.6
-
V
Thermal Shutdown
-
160
°C
REV1.0
- MAY 2018 RELEASED -
- 3 -
AITSEMI [ AiT Semiconductor ]
