 Features
 Build in power path NFETs and power switches
 1.0 MHz switching frequency operation
 Trickle current/constant current/constant voltage
charge mode with internal compensation
 Maximum 1.5 A charge current
 Up to 93% efficiency in boost mode
 Up to 93% efficiency in buck mode
 ±0.5% cell voltage accuracy
 Programmable charge current
 Programmable output voltage
 Dynamic power management
 2 independent discharge channels
 Input voltage UVLO and OVP
 Supports bidirectional communication
 Boost output short circuit protection
 The current accuracy is up to 5%
 Multiple-output pin with VBAT, IBAT, IVOR,
IVOL, NTC
 Integrate a 3.0 V/30 mA LDO for external MCU
 Safety-related certification: lEC 62368-1
 Applications
 True wireless stereo headphones
 Tablet, portable media players
 Electronic cigarettes
 Smart video doorbell
 Description
The DIO59618A is a highly integrated power
management IC that integrates functions such as
Buck, Boost, power path management, LDO, two
independent discharge management, and
independent detection for load. In addition, the chip
integrates temperature protection, input overvoltage,
faulty battery, and charging timeout protection,
making the charging process very safe and reliable.
The DIO59618A supports charging and discharging
voltage and current regulation through I2C
communication, it integrates two output current
limiting switches and provides independent load
presence and access detection.
The DIO59618A integrates communication ports,
enabling high-speed communication between the
MCU and earphones, greatly simplifying peripheral
components and circuits.
The DIO59618A synchronous boost system supports
a maximum output current of 1 A with an efficiency of
up to 93%. It also supports low quiescent power
consumption, which can be as low as 1 μA in ship
mode.