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MP5046 Sample Application
General Description

MP5046 is a single-chip IC specially designed for power bank, highly integrating switch charger, LED battery display cell and synchronous boost output, with charging current up to 2A and synchronous boost output up to 2.4A. It also provides discharge path management, battery display, torch, greatly simplifying peripheral circuits and components, and providing the simplest low-cost solution for power bank applications such as large-capacity lithium battery (lithium ion or lithium polymer). 
MP5046 is available in a ESOP8 package.

Features

Switch charger, 2A default charging current

90% discharging efficiency @2A

Switch frequency for charger: 1MHz

Charging in three phases: trickle current mode, constant current mode and constant voltage mode

Adaptive adapter for adjusting charging current

Adjustable charging current based on temperature (automatically decrease with the increase of temperature)

 C/10 charge termination and automatic recharging

Preset 4.2V (MP5046)/4.35V (MP5047) floating charge voltage with ±1% accuracy

Integrated charging over-voltage and battery over-temperature protections

5.1V synchronous boost output

Switch frequency for discharger: 500KHz

94% discharging efficiency

Automatic load identification and automatic shutdown at light load

Original temperature management technology for boost

Over-current, short-circuit, over-voltage and over-temperature protections of discharging module

2 LEDs display to indicate the battery fuel gauge, charge/discharge and abnormality

Clicking KEY to start discharge and long press to turn on/off the torch

Charging-discharging path management, discharge first

Typical Application Circuit Diagram
Applications

Standby power mobile devices such as mobile phones, tablet PCs, GPS, and electric tools