ISL6255HRZ Intersil, ISL6255HRZ Datasheet

IC CTRLR BATT CHRGR LI-ION 28QFN

ISL6255HRZ

Manufacturer Part Number
ISL6255HRZ
Description
IC CTRLR BATT CHRGR LI-ION 28QFN
Manufacturer
Intersil
Datasheet

Specifications of ISL6255HRZ

Function
Charge Management
Battery Type
Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
Voltage - Supply
7 V ~ 25 V
Operating Temperature
-10°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
28-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL6255HRZ
Manufacturer:
INTERSIL
Quantity:
20 000
Highly Integrated Battery Charger with
Automatic Power Source Selector for
Notebook Computers
The ISL6255, ISL6255A is a highly integrated battery charger
controller for Li-Ion/Li-Ion polymer 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
also be 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
ISL6255, ISL6255A provides outputs that are used to monitor
the current drawn from the AC adapter, and monitor for the
presence of an AC adapter. The ISL6255, ISL6255A
automatically transitions from regulating current mode to
regulating voltage mode.
ISL6255, ISL6255A has a feature for automatic power source
selection by switching to the battery when the AC adapter is
removed or switching to the AC adapter when the AC adapter
is available. It also provides a DC adapter monitor to support
aircraft power applications with the option of no battery
charging.
Ordering Information
NOTES:
ISL6255HRZ
ISL6255HAZ
ISL6255AHRZ ISL6255AHRZ
ISL6255AHAZ ISL6255AHAZ
1. Intersil Pb-free plus anneal products employ special Pb-free material
2. Add “-T” for Tape and Reel.
(Notes 1, 2)
NUMBER
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.
PART
ISL6255HRZ
ISL6255HAZ
MARKING
PART
®
RANGE (°C)
-10 to 100
-10 to 100
-10 to 100
-10 to 100
1
TEMP
Data Sheet
28 Ld 5x5 QFN L28.5×5
28 Ld QSOP
28 Ld 5x5 QFN L28.5×5
28 Ld QSOP
PACKAGE
(Pb-free)
1-888-INTERSIL or 1-888-468-3774
M28.15
M28.15
DWG. #
PKG.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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
• Programmable Charge Current Limit, Adapter Current
• Fixed 300kHz PWM Synchronous Buck Controller with
• 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
• Control Adapter Power Source Select MOSFET
• Thermal Shutdown
• Aircraft Power Capable
• DC Adapter Present Indicator
• Battery Discharge MOSFET Control
• Less than 10µA Battery Leakage Current
• Support Pulse Charging
• Charge Any Battery Chemistry: Li-Ion, NiCd, NiMH, etc.
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Notebook, Desknote and Sub-notebook Computers
• Personal Digital Assistant
(ISL6255A)
Limit and Charge Voltage
Diode Emulation at Light Load
All other trademarks mentioned are the property of their respective owners.
May 23, 2006
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
ISL6255, ISL6255A
FN9203.2

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ISL6255HRZ Summary of contents

Page 1

... Ordering Information PART NUMBER PART TEMP (Notes 1, 2) MARKING RANGE (°C) ISL6255HRZ ISL6255HRZ -10 to 100 ISL6255HAZ ISL6255HAZ -10 to 100 ISL6255AHRZ ISL6255AHRZ -10 to 100 ISL6255AHAZ ISL6255AHAZ -10 to 100 NOTES: 1. Intersil Pb-free plus anneal products employ special Pb-free material sets ...

Page 2

Pinouts ISL6255, ISL6255A (28 LD QFN) TOP VIEW CELLS 2 ICOMP 3 VCOMP 4 ICM 5 VREF 6 CHLIM ISL6255, ISL6255A 23 22 CSOP 21 CSIN ...

Page 3

Absolute Maximum Ratings DCIN, CSIP, CSON to GND -0.3V to +28V CSIP-CSIN, CSOP-CSON . . . . . . . ...

Page 4

Electrical Specifications DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF, VADJ = Floating VDD = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V ...

Page 5

Electrical Specifications DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF, VADJ = Floating VDD = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V ...

Page 6

Electrical Specifications DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF, VADJ = Floating VDD = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V ...

Page 7

Typical Operating Performance FIGURE 5. AC AND DC ADAPTER DETECTION FIGURE 7. CHARGE ENABLE AND SHUTDOWN CHLIM=0.2V CHLIM=0.2V CSON=8V CSON=8V FIGURE 9. AC ADAPTER REMOVAL 7 ISL6255, ISL6255A DCIN = 20V, 4S2P Li-Battery 25°C, unless otherwise noted. (Continued) ...

Page 8

Typical Operating Performance ADAPTER REMOVAL ADAPTER REMOVAL FIGURE 11. SWITCHING WAVEFORMS AT DIODE EMULATION Functional Pin Descriptions BOOT Connect BOOT to a 0.1µF ceramic capacitor to PHASE pin and connect to the cathode of the bootstrap schottky diode. UGATE UGATE ...

Page 9

DCIN The DCIN pin is the input of the internal 5V LDO. Connect it to the AC adapter output. Connect a 0.1µF ceramic capacitor from DCIN to CSON. ACSET ACSET adapter detection input. Connect to a resistor ...

Page 10

ISL6255, ISL6255A ICM ICM ICM ICM ACSET ACSET ACSET ACSET ACPRN ACPRN ACPRN ACPRN - - - - - - - - 1.065V 1.065V ...

Page 11

AC ADAPTER VDD 130k 130k 130k 130k DCIN DCIN DCIN DCIN 10.2k 10.2k 10.2k 10. ACSET ACSET ACSET ACSET ...

Page 12

ADAPTER VDD VDD VDD VDD 130k 130k 130k 130k R14 R14 100k 100k 100k 100k 10.2k 10.2k 10.2k 10. R15 ...

Page 13

Theory of Operation Introduction The ISL6255, ISL6255A includes all of the functions necessary to charge cell Li-Ion and Li-polymer batteries. A high efficiency synchronous buck converter is used to control the charging voltage and charging current up ...

Page 14

An external resistor divider from VREF sets the voltage at VADJ according to bot_VADJ × V VREF ------------------------------------------------------------------------------------------------ - = VADJ R || top_VADJ 514k + R bot_VADJ 514k where R and R are external resistors at bot_VADJ ...

Page 15

The highest accuracy of ±3% is achieved with 100mV current-sense threshold voltage for ACLIM = VREF, but it has the highest power dissipation. For example, it has 400mW power dissipation for rated 4A AC adapter and 1W sensing ...

Page 16

If designing for airplane power, DCSET is tied to a resistor divider sensing the adapter voltage. When a user is plugged into the 15V airplane supply and the battery voltage is lower than 15V, the MOSFET ...

Page 17

C ), and caused by the voltage gd rising rate at phase node at the time instant of the ...

Page 18

TABLE 2. COMPONENT LIST (Continued) PARTS PART NUMBERS AND MANUFACTURER 10 μ H/3.8A/26m Ω , Sumida, CDRH104R-100 L 30V/35m Ω , FDS6912A, Fairchild Q1, Q2 -30V/30m Ω , SI4835BDY, Siliconix Q3 Signal P-channel MOSFET, NDS352AP Q6 Signal N-channel ...

Page 19

REF REF + + + + FIGURE 18. VOLTAGE LOOP COMPENSATOR Figure 17 shows the voltage ...

Page 20

PHASE Pin This trace should be short, and positioned away from other weak signal traces. This node has a very high dv/dt with a voltage swing from the input voltage to ground. No trace should be in parallel with it. ...

Page 21

... Dimensions D2 and E2 are for the exposed pads which provide improved electrical and thermal performance. 8. Nominal dimensions are provided to assist with PCB Land Pattern Design efforts, see Intersil Technical Brief TB389. 9. Features and dimensions A2, A3, D1, E1, P & θ are present when C L Anvil singulation method is used and not present for saw singulation ...

Page 22

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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