IP2326 Features
 Integrated 15W synchronous switch-mode
boost charger
 94% boost charging efficiency
 Power MOSFETs integrated
 Integrated charge equalization circuit
 Support input fast charge application,
according to battery voltage application fast
charge input, improve charging efficiency
 Programmable constant voltage charging
voltage by external resistor
 The pin can be set to 2/3 series lithium battery
charging
 Programmable charging current by external
resistor
 According to the battery voltage, automatically
apply for fast charging input
 Self-regulated input current, adaptive adaptor
load
 Support charging NTC temperature protection
 Input over-voltage, under-voltage protection
can be adjusted by external resistor
 Charging timeout protection, can be adjusted
by external resistor
 LED for charging status indication
 500kHz switching frequency, support 2.2uH
inductor
 Output OC, OV and Short circuit protection
 IC over temperature protection
 Input withstand voltage 25V
 ESD 4KV ability

IP2326 Description
IP2326 is a boost charging IC for 2/3 serial
lithium battery with 15W fast charge
IP2316 is highly-integrated, few peripheral
devices is needed in application, delivering small
PCB area and low BOM cost.
IP2326 integrate synchronous switching circuit
with power FETs at 500kHz switching frequency.
Maximum 15W input charge. 5V VIN, the charging
efficiency is 94% when VOUT is 8V/1A, the
charging efficiency is 92% when VOUT is 8V/1.5A
IP2326 has the function of input voltage
limiting. The charge current is regulated
automatically. Adaptive adapter load capacity
IP2326 supports external pins to set 2 or 3
series lithium battery charging
IP2326 supports an external resistor to adjust
charging current, charging voltage, input
under-voltage threshold, input over-voltage
threshold, charging time-out threshold and other
parameters
IP2326 can be based on the battery voltage, to
apply for fast charging input to improve charging
efficiency, shorten charging time
IP2326 integrated 2 series charge equalization
circuit, can detect each battery voltage when
charging, to ensure 2 battery voltage balance
IP2326 integrated NTC protection function,
with NTC resistor
IP2326 is package in QFN24, 4*4mm

IP2326 Typical Applications
 Two-cell/three-cell Li/Li-Ion battery charging
management