MP2249

MP2249

NOT RECOMMENDED FOR NEW DESIGNS

1MHz, 6V, 3A, Low-Voltage Synchronous Step-Down Converter

ALTERNATIVE PART

NRFND Datasheet

MP2249 continues to be in production for existing customers. Please consider this alternative for new designs:

MP2143DJ-LF-Z

3A, 5.5V, 1.2MHz, 40µA Iq, COT Synchronous Step-Down Switcher

Features & Benefits

Wide 2.5V-to-5.5V Operating Input Range
Output Voltage as Low as 0.6V
100% Duty Cycle in Dropout
Up to 3A Output Current
Low IQ: 40µA
80mΩ and 40mΩ Internal Power MOSFET Switches
Default 1.2MHz Switching Frequency
EN and Power-Good for Power Sequencing
Cycle-by-Cycle Over-Current Protection
Auto Discharge at Power Off
Short-Circuit Protect with Hiccup Mode
Stable with Low-ESR Output Ceramic Capacitors
Available in a TSOT23-8 Package

… and many more!

Description

The MP2249 is a 1MHz constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency and eliminates the need for an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell LithiumIon (Li+) battery.

The MP2249 can supply 3A of load current from a 2.5V to 6V input voltage. It can run at 100% duty cycle for low dropout applications. The MP2249 provides internal soft-start control to reduce rush current and output discharge function to control discharging of the output capacitor.

The MP2249 is available in small 3mmx3mm TQFN10 or SOIC8E package.