MP28119

NOT RECOMMENDED FOR NEW DESIGNS

Ultra-small 1.7MHz, 600mA, 1.0V and 1.2V Fixed Out-put Versions, Synchronous Step-Down Converter

ALTERNATIVE PART

NRFND Datasheet

MP28119 continues to be in production for existing customers. Please consider this alternative for new designs:

MP2141N

1A, Synchronous, Step-Down Converter with 11µA Quiescent Current in SOT563

Features & Benefits

Low Quiescent Current: 11μA
2.2MHz Switching Frequency
EN for Power Sequencing
Power Good Only for Fixed Output Version
Wide 2.3V-to-5.5V Operating Input Range
Output Adjustable from 0.6V
Up to 1A Output Current
120mΩ and 80mΩ Internal Power MOSFET Switches
Output Discharge
Short-Circuit Protection (SCP) with Hiccup Mode
Stable with Low ESR Output Ceramic Capacitors
100% Duty Cycle
Available in a SOT563 Package

… and many more!

概要

The MP28119 is a 1.7MHz constant frequency, current mode, ultra-small 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 MP28119 can supply 600mA of load current from a 2.5V to 6V input voltage. The MP28119 offers fixed 1.0V and 1.2V output option and adjustable output option. The MP28119 can run at 100% duty cycle for low dropout applications, and includes an output discharge function to control the discharging of the output capacitor. The MP28119 is available in an ultra-small 2x2 QFN package.

機能と利点

High Efficiency: Up to 89%
1.7MHz Constant Switching Frequency
600mA Available Load Current
2.5V to 6V Input Voltage Range
100% Duty Cycle in Dropout
Current Mode Control
Short Circuit Protection
Thermal Fault Protection
Output Discharge Function
<0.1μA Shutdown Current
1.0V and 1.2V Fixed Out-put Versions
Ultra-Small 2x2 QFN Package

アクティブ部品番号

MP28119EG-LF-P MP28119EG-LF-Z

P＆Zの意味

Evaluation Tools

LEV28119EG-00A Evaluation Kit ow-Voltage 600mA Synchronous Buck Step-Down Converter

The EV28119 evaluation board is designed for low dropout step down converter applications. It implements the MP28119 1.7MHz fixed frequency, current-mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) Battery. It can supply 600mA of load current from a 2.5V to 6V input voltage. The output voltage can be regulated as low as 0.6V. In 100% Duty Cycle Dropout operation, it works with minimum input voltage as low as output voltage. It can output voltage as low as 1V from 6V input due to its very small minimum on-time. Furthermore, with the output discharge function, even at no load, the output voltage falls quickly when disabled.

￥3,199.00
+ tax

設計リソース