Charger Controller. ISL6251A Datasheet

ISL6251A Controller. Datasheet pdf. Equivalent

Part ISL6251A
Description Low Cost Multi-Chemistry Battery Charger Controller
Feature DATASHEET ISL6251, ISL6251A Low Cost Multi-Chemistry Battery Charger Controller The ISL6251, ISL62.
Manufacture Renesas
Datasheet
Download ISL6251A Datasheet

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ISL6251A
DATASHEET
ISL6251, ISL6251A
Low Cost Multi-Chemistry Battery Charger Controller
The ISL6251, ISL6251A 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
ISL6251, ISL6251A provides outputs that are used to monitor
the current drawn from the AC adapter, and monitor for the
presence of an AC adapter. The ISL6251, ISL6251A
automatically transitions from regulating current mode to
regulating voltage mode.
Ordering Information
PART NUMBER
PART
(Notes 1, 2, 3) MARKING
TEMP
RANGE
(°C)
PACKAGE PKG.
(Pb-Free) DWG. #
ISL6251HRZ ISL 6251HRZ -10 to +100 28 Ld 5x5 QFN L28.55
ISL6251HAZ ISL 6251HAZ -10 to +100 24 Ld QSOP M24.15
ISL6251AHRZ ISL6251 AHRZ -10 to +100 28 Ld 5x5 QFN L28.55
ISL6251AHAZ ISL6251 AHAZ -10 to +100 24 Ld QSOP M24.15
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on
reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information
page for ISL6251, ISL6251A. For more information on MSL please
see techbrief TB363.
FN9202
Rev 3.00
March 13, 2014
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
(ISL6251A)
• 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
• Supports 2, 3 and 4 Cells 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
FN9202 Rev 3.00
March 13, 2014
Page 1 of 20



ISL6251A
ISL6251, ISL6251A
Pin Configurations
ISL6251, ISL6251A
(28 LD QFN)
TOP VIEW
28 27 26 25 24 23 22
EN 1
21 CSOP
CELLS 2
20 CSIN
ICOMP 3
19 CSIP
VCOMP 4
18 NA
ICM 5
17 NA
VREF 6
16 PHASE
CHLIM 7
15 UGATE
8 9 10 11 12 13 14
ISL6251, ISL6251A
(24 LD QSOP)
TOP VIEW
VDD
ACSET
EN
CELLS
ICOMP
VCOMP
ICM
VREF
CHLIM
ACLIM
VADJ
GND
1
2
3
4
5
6
7
8
9
10
11
12
24 DCIN
23 ACPRN
22 CSON
21 CSOP
20 CSIN
19 CSIP
18 PHASE
17 UGATE
16 BOOT
15 VDDP
14 LGATE
13 PGND
FN9202 Rev 3.00
March 13, 2014
Page 2 of 20





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