AiT Semiconductor Inc.
www.
ait-ic.
com
A7121
2A 1.
2MHz HIGH EFFICIENCY SYNCHRONOUS STEP-DOWN DC-DC CONVERTER
DESCRIPTION
FEATURES
The A7121 is a 1.
2MHz constant frequency current mode PWM step-down converter.
It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions.
The A7121 also can run at 100% duty cycle for low
Input
Voltage Range: 2.
5V to 6.
0V Output
Voltages from 0.
6V to VIN 2A Output Current High Efficiency: Up to 95% 1.
2MHz Constant Switching Frequency Low RDS(ON) Internal Switches: 0.
15Ω Allows Use of Ceramic
Capacitors
dropout operation, extending battery...