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ISL6252AEVAL2Z Evaluation Board

Setup Procedure

Low Cost Multi-Chemistry Battery
Charger Controller

The ISL6252, ISL6252A is a highly integrated battery
charger controller for Li-ion/Li-ion polymer batteries and
NiMH batteries. High Efficiency is achieved by a
synchronous buck topology and the use of a MOSFET,
instead of a diode, for selecting power from the adapter or
battery. The low side MOSFET emulates a diode at light
loads to improve the light load efficiency and prevent system
bus boosting.

The constant output voltage can be selected for 2-, 3- and
4-series Li-ion cells with 0.5% accuracy over-temperature. It
can be also programmed between 4.2V +5%/cell and
4.2V -5%/cell to optimize battery capacity. When supplying
the load and battery charger simultaneously, the input
current limit for the AC adapter is programmable to within
3% accuracy to avoid overloading the AC adapter, and to
allow the system to make efficient use of available adapter
power for charging. It also has a wide range of
programmable charging current. The ISL6252, ISL6252A
provides outputs that are used to monitor the current drawn
from the AC adapter, and monitor for the presence of an AC
adapter. The ISL6252, ISL6252A automatically transitions
from regulating current mode to regulating voltage mode.

Features

• ±0.5% Charge Voltage Accuracy (-10°C to +100°C)

• ±3% Accurate Input Current Limit

• ±3% Accurate Battery Charge Current Limit

• ±25% Accurate Battery Trickle Charge Current Limit

(ISL6252A)

• Programmable Charge Current Limit, Adapter Current

Limit and Charge Voltage

• Fixed 300kHz PWM Synchronous Buck Controller with

Diode Emulation at Light Load

• Output for Current Drawn from AC Adapter

• AC Adapter Present Indicator

• Fast Input Current Limit Response

• Input Voltage Range 7V to 25V

• Support 2-, 3- and 4-Cell Battery Pack

• Up to 17.64V Battery-Voltage Set Point

• Thermal Shutdown

• Support Pulse Charging

• Less than 10µA Battery Leakage Current

• Charge Any Battery Chemistry: Li-ion, NiCd, NiMH, etc.

• Pb-Free (RoHS Compliant)

Applications

• Notebook, Desknote and Sub-notebook Computers

• Personal Digital Assistant

Pinout

ISL6252, ISL6252A

(24 LD QSOP)

TOP VIEW

Ordering Information

PART

NUMBER

(Note)

PART

MARKING

TEMP

RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL6252HAZ*

ISL 6252HAZ

-10 to +100 24 Ld QSOP

M24.15

ISL6252AHAZ* ISL6252 AHAZ -10 to +100 24 Ld QSOP

M24.15

*Add “-T” suffix for tape and reel. Please refer to TB347 for details on
reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.

DCIN

VDD

ACPRN

ACSET

CSON

CSOP

CSIN

CELLS

CSIP

ICOMP

VCOMP

ICM