MPQ2249

MPQ2249

NOT RECOMMENDED FOR NEW DESIGNS

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

ALTERNATIVE PART

NRFND Datasheet

MPQ2249 continues to be in production for existing customers. Please consider this alternative for new designs:

MPQ2179GQHE-AEC1

5.5V, Peak 3A, 2.4MHz, Synchronous Step-Down Converter with PG and SS, AEC-Q100 Qualified

Features & Benefits

Wide 2.5V to 5.5V Operating Input Voltage (V_IN) Range
Up to 3A Peak Output Current (I_OUT)
2.4MHz Switching Frequency (f_SW)
EN for Power Sequencing
1% FB Accuracy
Output Voltage (V_OUT) Adjustable from 0.6V
65mΩ and 35mΩ Internal Power MOSFET Switches
100% Duty Cycle On
Output Discharge
Power Good (PG)
External Soft Start (SS) Control
Output Over-Voltage Protection (OVP)
Short-Circuit Protection (SCP) with Hiccup Mode
Forced Continuous Conduction Mode (FCCM)
Available in a QFN-8 (1.5mmx2mm) Package
Available in a Wettable Flank Package
Available in AEC-Q100 Grade 1

… and many more!

Description

The MPQ2249 is a 1MHz, constant-frequency, current-mode, pulse-width modulation (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 Lithium-Ion (Li+) battery. The MPQ2249 can supply 3A of load current from a 2.5V to 6V input voltage (V_IN) range. It can run at 100% duty cycle for low dropout applications. The MPQ2249 provides internal soft-start control to reduce rush current and an output discharge function to control discharging of the output capacitor. The MPQ2249 is available in a small SOIC8E package.