MP28300

300mA, 5.5V, 500nA, Ultra-Low Iq, Synchronous, Step-Down Converter plus 100mA LDO

Datasheet

Description

The MP28300 is a monolithic power-management unit containing 300mA, high-efficiency, step-down, switching converters and a 100mA LDO regulator. The nanoamp quiescent current provides extremely high efficiency when the load current is down in the µA range. With minimum input voltage as low as 2V, the MP28300 allows the system to operate directly from the battery. The constant-on-time control scheme provides fast transient response, high light-load efficiency, and requires minimal capacitance. The regulation can be made tight by integrating an error amplifier to correct the output voltage. An 100mA LDO regulator provides easy system configuration with clean output voltage. The CTRL pins control the on/off and output voltage selection functions. Fault protection features include under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown. The MP28300 requires a minimal number of readily available, standard, external components and is available in a small QFN-12 (2mmx2mm) package.

Features & Benefits

300mA Buck Switcher
o Ultra-Low Iq: 500nA
o Wide 2.0V to 5.5V Operating Input Range
o 7 Selectable Output Voltages
o Up to 300mA Output Current
o 1.5MHz Switching Frequency in Continuous Conduction Mode (CCM)
o 100% Duty Cycle in Dropout
o 0.25? and 0.25? Internal Power MOSFET Switches
o Cycle-by-Cycle Over-Current Protection (OCP)
o Short-Circuit Protection (SCP) with Hiccup Mode
100mA LDO
o Ultra-Low Iq: 300nA
o 2.0V to 5.5V Operating Input Range
o 3 Selectable Output Voltages
o Over-Temperature Protection (OTP)
Available in a QFN-12 (2mmx2mm) Package

Active Part Numbers:

MP28300GG-P MP28300GG-Z

Evaluation Tools

EV28300-G-01A Evaluation Kit Ultra Low IQ Step-Down Regulator plus LDO Step-Down Switcher Evaluation Board

The MP28300 is a monolithic power management unit containing 300mA high efficiency step-down switching converters and a 100mA LDO regulator. The sub micro-ampere quiescent current provides extremely high efficiency when load current is low down to uA range. With the input range up to 5.5V, the MP28300 is ideal for powering battery-powered devices.

The constant-on-time control scheme provides fast transient response, high light load efficiency as well as the minimum capacitors. The regulation is tight by integrating an error amplifier to correct the output voltage.

Another 100mA LDO regulator provides easy system configuration with clean output voltage.

The CTRL pins control the ON/OFF and output voltage selection function.

The MP28300 requires a minimum number of readily available standard external components and is available in a small QFN12 (2x2mm) package.

$25.00
+ tax