MP2126

Pinout




Description

The MP2126 is an internally compensated 2.5A synchronous step-down switcher plus a standalone 0.5A low dropout (LDO) linear regulator. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) Battery. The MP2126 can provide up to 2.5A to the switcher output, and 0.5A load current to the LDO output from a 2.5V to 6V input voltage. Both switcher and LDO output voltages can be regulated as low as 0.6V. The 2.5A switcher features an integrated high side switch and synchronous rectifier for high efficiency. The switcher operating frequency is internally set at 1.25MHz. With peak current mode control and internal compensation, the MP2126 can be stabilized with ceramic capacitors and small inductors. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The standalone 0.5A LDO output is used to power noise sensitive circuitry. The LDO separate input supply pin (IN2) can be connected to the switcher output to reduce power dissipation and noise from the main switcher. MP2126 is available in an 8-pin SOIC package with exposed pad.