Datasheet > ISL6257

ISL6257

更新时间： 2024-11-13 04:58:39

品牌	Logo	应用领域
英特矽尔 - INTERSIL		电池电脑
页数	文件大小	规格书
22页	493K
描述
Highly Integrated Narrow VDC Battery Charger for Notebook Computers

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ISL6257 数据手册

ISL6257

Data Sheet

January 17, 2007

FN9288.2

Highly Integrated Narrow VDC Battery

Charger for Notebook Computers

Features

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

• ±3% Accurate Input Current Limit

The ISL6257 is a highly integrated battery charger controller

for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for

Narrow VDC applications where the system power source is

either the battery pack or the regulated output of the charger.

This makes the max voltage to the system equal to the max

battery voltage instead of the max adapter voltage. Operating

at lower system voltage can improve overall efficiency. High

efficiency is achieved in the charger with a synchronous buck

topology. The low-side MOSFET emulates a diode at light

loads to improve the light load efficiency and prevent system

bus boosting.

• ±3% Accurate Battery Charge Current Limit

• ±25% Accurate Battery Trickle Charge Current Limit

• Programmable Charge Current Limit, Adapter Current

Limit and Charge Voltage

• Fixed 300kHz PWM Synchronous Buck Controller with

Diode Emulation at Light Load

• 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

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% per cell and

4.2V - 5% per 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 ISL6257 automatically transitions from

regulating current mode to regulating voltage mode.

• 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)

Ordering Information

Applications

PART

NUMBER

(Notes 1, 2)

• Notebook, Desknote and Sub-notebook Computers

• Personal Digital Assistant

PART

TEMP

PACKAGE

(Pb-free)

PKG.

DWG. #

MARKING RANGE (°C)

Pinout

ISL6257HRZ

ISL6257HRZ -10 to +100 28 Ld 5x5 QFN L28.5×5

ISL6257 (28 LD QFN)

ISL6257HRZ-T ISL6257HRZ -10 to +100 28 Ld 5x5 QFN L28.5×5

TOP VIEW

Tape & Reel

NOTE: Intersil Pb-free plus anneal 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.

28 27 26 25 24 23 22

CSOP

CSIN

CSIP

CELLS

ICOMP

VCOMP

SGATE

BGATE

VREF

16 PHASE

UGATE

CHLIM

10 11 12 13 14

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...22

中文翻译

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与ISL6257相关器件

型号	品牌	获取价格	描述	数据表
ISL6257HRZ	INTERSIL	获取价格	Highly Integrated Narrow VDC Battery Charger for Notebook Computers
ISL6257HRZ-T	INTERSIL	获取价格	Highly Integrated Narrow VDC Battery Charger for Notebook Computers
ISL6258	RENESAS	获取价格	Narrow VDC Regulator/Charger with SMBus Interface
ISL6258A	RENESAS	获取价格	Narrow VDC Regulator/Charger with SMBus Interface
ISL6260	ISC	获取价格	The ISL6260 and ISL6260B provide microprocessor core voltage regulation by driving up to 3
ISL6260	INTERSIL	获取价格	Multiphase Core Regulator for IMVP-6 Mobile CPUs
ISL6260B	ISC	获取价格	The ISL6260 and ISL6260B provide microprocessor core voltage regulation by driving up to 3
ISL6260BCRZ	INTERSIL	获取价格	Multiphase Core Regulator for IMVP-6 Mobile CPUs
ISL6260BCRZ-T	INTERSIL	获取价格	Multiphase Core Regulator for IMVP-6 Mobile CPUs
ISL6260CCRZ	INTERSIL	获取价格	Multiphase PWM Regulator for IMVP-6 Mobile CPUs

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