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ISL6251 の電気的特性と機能

ISL6251のメーカーはIntersil Corporationです、この部品の機能は「Low Cost Multi Chemistry Battery Charger Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6251
部品説明 Low Cost Multi Chemistry Battery Charger Controller
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL6251 Datasheet, ISL6251 PDF,ピン配置, 機能
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®
Data Sheet
ISL6251, ISL6251A
April 22, 2005
FN9202.0
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
TEMP
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6251HRZ
(Notes 1, 2)
-10 to 100 28 Ld 5x5 QFN L28.5×5
(Pb-free)
ISL6251HAZ
(Notes 1, 2)
-10 to 100 24 Ld QSOP
(Pb-free)
M24.15
ISL6251AHRZ -10 to 100 28 Ld 5x5 QFN L28.5×5
(Notes 1, 2)
(Pb-free)
ISL6251AHAZ
(Notes 1, 2)
-10 to 100 24 Ld QSOP
(Pb-free)
M24.15
NOTES:
1. Intersil Pb-free products employ special Pb-free material sets;
molding compounds/die attach materials and 100% matte tin
plate termination finish, which are 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.
2. Add “-T” for Tape and Reel.
Features
• ±0.5% Charge Voltage Accuracy (-10°C to 100°C)
• ±3% Accurate Input Current Limit
• ±5% 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
• Support 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 Available (RoHS Compliant)
Applications
• Notebook, Desknote and Sub-notebook Computers
• Personal Digital Assistant
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6251 pdf, ピン配列
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ISL6251, ISL6251A
Absolute Maximum Ratings
DCIN, CSIP, CSON to GND. . . . . . . . . . . . . . . . . . . . . -0.3V to +28V
CSIP-CSIN, CSOP-CSON . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
PHASE to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7V to 30V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +35V
BOOT-PHASE, VDD-GND, VDDP-PGND,
ACPRN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
ACSET to GND (Note 3) . . . . . . . . . . . . . . . . . . -0.3V to VDD+0.3V
ICM, ICOMP, VCOMP to GND. . . . . . . . . . . . . . -0.3V to VDD+0.3V
ACLIM, CHLIM, VREF, CELLS to GND . . . . . . . -0.3V to VDD+0.3V
EN, VADJ, PGND to GND . . . . . . . . . . . . . . . . . .-0.3V to VDD+0.3V
UGATE. . . . . . . . . . . . . . . . . . . . . . . . . PHASE-0.3V to BOOT+0.3V
LGATE . . . . . . . . . . . . . . . . . . . . . . . . . . PGND-0.3V to VDDP+0.3V
Thermal Information
Thermal Resistance
θJA(°C/W) θJC (°C/W)
QFN Package (Notes 4, 6). . . . . . . . . .
39
9.5
QSOP Package (Note 5) . . . . . . . . . . .
88
N/A
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 2
Junction Temperature Range. . . . . . . . . . . . . . . . . .-10°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . .-10°C to +100°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
3. When the voltage across ACSET is below 0V, the current through ACSET should be limited to less than 1mA.
4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
6. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
DCIN=CSIP=CSIN=18V, CSOP=CSON=12V, ACSET=1.5V, ACLIM=VREF, VADJ=Floating, EN=VDD=5V,
BOOT-PHASE=5.0V, GND=PGND=0V, CVDD=1µF, IVDD=0mA, TA=-10°C to +100°C, TJ 125°C, unless
otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY AND BIAS REGULATOR
DCIN Input Voltage Range
7 25 V
DCIN Quiescent Current
EN=VDD or GND, 7V DCIN 25V
1.4 3 mA
Battery Leakage Current (Note 7)
DCIN=0, no load
3 10 µA
VDD Output Voltage/Regulation
VDD Undervoltage Lockout Trip Point
7V DCIN 25V, 0 IVDD 30mA
VDD Rising
4.925
4.0
5.075
4.4
5.225
4.6
V
V
Hysteresis
200 250 400 mV
Reference Output Voltage VREF
0 IVREF 300mA
2.365 2.39 2.415
Battery Charge Voltage Accuracy
CSON=16.8V, CELLS=VDD, VADJ=Float
-0.5
0.5
V
%
CSON=12.6V, CELLS=GND, VADJ=Float
-0.5
0.5 %
CSON=8.4V, CELLS=Float, VADJ=Float
-0.5
0.5 %
CSON=17.64V, CELLS=VDD, VADJ=VREF
-0.5
0.5 %
CSON=13.23V, CELLS=GND, VADJ=VREF
-0.5
0.5 %
CSON=8.82V, CELLS=Float, VADJ=VREF
-0.5
0.5 %
CSON=15.96V, CELLS=VDD, VADJ=GND
-0.5
0.5 %
CSON=11.97V, CELLS=GND, VADJ=GND
-0.5
0.5 %
CSON=7.98V, CELLS=Float, VADJ=GND
-0.5
0.5 %
TRIP POINTS
ACSET Threshold
1.24 1.26 1.28
V
ACSET Input Bias Current Hysteresis
2.2 3.4 4.4 µA
ACSET Input Bias Current
ACSET 1.27V
2.2 3.4 4.4 µA
ACSET Input Bias Current
ACSET < 1.27V
-1 0
1 µA
3 FN9202.0
April 22, 2005


3Pages


ISL6251 電子部品, 半導体
www.DataSheet4U.com
ISL6251, ISL6251A
Typical Operating Performance DCIN=20V, 4S2P Li-Battery, TA=25°C, unless otherwise noted.
0.6
VDD=5.075V
EN=0
0.3
0
0.1
VREF=2.390V
0.08
0.06
0.04
-0.3 0.02
-0.6
0 8 16 24 32
LOAD CURRENT (mA)
FIGURE 1. VDD LOAD REGULATION
40
0
0 100 200 300
LOAD CURRENT (µA)
FIGURE 2. VREF LOAD REGULATION
400
10
9
8
7
6
5
4
3
2
1
0
10 20 30 40 50 60 70 80 90 100
CSIP-CSIN (mV)
FIGURE 3. ICM ACCURACY vs AC ADAPTER CURRENT
1
0 .9 6
0 .9 2
0 .8 8
0 .8 4
VCSON=12.6V
(3 CELLS)
VCSON=8.4V
2 CELLS
VCSON=16.8V
4 CELLS
0 .8
0 .76
0 0 .5 1 1.5 2 2.5 3 3 .5 4
CHARGE CURRENT (A)
FIGURE 4. SYSTEM EFFICIENCY vs CHARGE CURRENT
LOAD STEP: 0-4A
CHARGE CURRENT: 3A
AC ADAPTER CURRENT LIMIT: 5.15A
LOAD
CURRENT
5A/div
ADAPTER
CURRENT
5A/div
CHARGE
CURRENT
2A/div
BATTERY
VOLTAGE
2V/div
FIGURE 5. LOAD TRANSIENT RESPONSE
6
CSON
5V/div
EN
5V/div
INDUCTOR
CURRENT
2A/div
CHARGE
CURRENT
2A/div
FIGURE 6. CHARGER ENABLE & SHUTDOWN
FN9202.0
April 22, 2005

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部品番号部品説明メーカ
ISL6251

Low Cost Multi Chemistry Battery Charger Controller

Intersil Corporation
Intersil Corporation
ISL6251A

Low Cost Multi Chemistry Battery Charger Controller

Intersil Corporation
Intersil Corporation
ISL6252

Highly Integrated Battery Charger Controller

Intersil
Intersil
ISL6252A

Highly Integrated Battery Charger Controller

Intersil
Intersil


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