Features
 Discharge
 Output capacity: 5V/300mA
 Up to 93%@5V/150mA discharge efficiency
of synchronous switch
 Built-in power path management supports
charging and discharging at the same time
 Charge
 Max 500mA linear charger, adjustable
charging current
 Adjusts charging current automatically to
adapt to different load capacity adapters
 Supports 4.20V, 4.30V 4.35V, 4.40V batteries
 Battery indicators
 Built-in 10bits ADC , accurate calculation of
battery capacity
 Supports 4/3/2/1 LED battery indicator
 Low-power dissipation
 Automatically detect earphone plugged-in/
plugged-out/charger-end, Automatically
enter standby mode
 Support detection of earphone
plug-in/plug-out independly
 Standby power consumption up to 25uA
minimum
 Simplified BOM
 Built-in power MOS, only a few peripheral
devices are needed in the complete charging
and discharging scheme
 Multiple protection, high reliability
 Output：over current and short circuit
protection
 Input：over voltage protection and Battery
over charged protection
 Over temperature protection
 Vin pin can withstand up to 15V(transient
voltage)
 ESD 4KV
 In-depth customization
 Flexible and low-cost customized program
 Package: QFN16 (4*4*0.75mm)

2. Applications
 TWS Bluetooth Earphone Charging Box
 Lithium Battery Portable Device

3. Description
IP5516 is a multi-functional power management
SOC for total solution on TWS Bluetooth Earphone
Charging Box. It integrates with 5V boost converter,
lithium battery charging management and battery
level indicators.
IP5516 is highly integrated with abundant
functions, which makes the total solution with
minimized-size and low-cost BOM.
The synchronous 5V-boost system of IP5516
provides rated 300mA output current with conversion
efficiency up to 93%. DC-DC converter operates at
1.5MHz frequency, can support low-cost inductors and
capacitors.
IP5516’s linear charger supplies max 500mA
charging current. With the change of IC temperature
and input voltage, IP5516 can automatically adjust the
charging current.
IP5516 can detects the TWS earphone
plug-in/plug-out in the Chargering Box independently.
While the earphone is put in the Chargering Box, it
enters the discharging mode automaticaly. When the
earphone is fully charged, the Chargering Box
automatically enters the sleep state, and the standby
current can be reduced to 30uA. The earphone’s
charge-end current can be Flexible and customizable,
such as 4mA or 8mA.
IP5516 can support 1/2/3/4 LED battery indicator,
The built-in 10bits ADC can accurately calculate the
Chargering Box’s battery capacity.
IP5516 is packaged with QFN16(4*4*0.75mm).