Datasheet > BQ24707_15

BQ24707_15

更新时间： 2024-11-24 01:17:07

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
44页	1562K
描述
bq24707x 1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circuit Protection

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bq24707, bq24707A

SLUSA78C –JULY 2010–REVISED JULY 2015

bq24707x 1-4 Cell Li+ Battery SMBus Charge Controller With Independent Comparator

and Advanced Circuit Protection

1 Features

3 Description

The bq24707 and bq24707A devices are high-

efficiency, synchronous battery chargers, offering low

component count for space-constrained, multi-

chemistry battery charging applications.

•

SMBus Host-Controlled NMOS-NMOS

Synchronous Buck Converter With Programmable

615 kHz, 750 kHz, and 885 kHz Switching

Frequency

SMBus controlled input current, charge current, and

charge voltage DACs allow for very high regulation

accuracies that can be easily programmed by the

system power management micro-controller.

•

Real-Time System Control on ILIM Pin to Limit

Charge Current

Enhanced Safety Features for Overvoltage

Protection, Overcurrent Protection, Battery,

Inductor, and MOSFET Short-Circuit Protection

The IC uses the internal input current register or

external ILIM pin to throttle down PWM modulation to

reduce the charge current.

•

Programmable Input Current, Charge Voltage,

Charge Current Limits

The IC provides an IFAULT output to alarm if any

MOSFET fault or input over current occurs. This

alarm output allows users to turn off input power

selectors when the fault occurs. Meanwhile, an

independent comparator with internal reference is

available to monitor input current, output current, or

output voltage.

–

±0.5% Charge Voltage Accuracy up to 19.2 V

±3% Charge Current Accuracy up to 8.128 A

±3% Input Current Accuracy up to 8.064 A

±2% 20× Adapter Current or Charge Current

Output Accuracy

•

Programmable Adapter Detection and Indicator

Independent Comparator With Internal Reference

Integrated Soft-Start

The IC charges one-, two-, three-, or four-series Li+

cells, and is available in a 20-pin, 3.5 × 3.5 mm QFN

package.

Integrated Loop Compensation

Device Information⁽¹⁾

AC Adapter Operating Range 5 V to 24 V

15-µA Off-State Battery Discharge Current

20-pin 3.5 mm × 3.5 mm QFN Package

bq24707: ACOK Delay Default 1.3 s

bq24707A: ACOK Delay Default 1.2 ms

PART NUMBER

bq24707

PACKAGE

BODY SIZE (NOM)

VQFN (20)

3.50 mm × 3.50 mm

bq24707A

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

2 Applications

Simplified Schematic

Enhanced Safety:

OCP, OVP,FET Short

•

Portable Notebook Computers, UMPCs, Ultra-Thin

Notebooks, and Netbooks

R_AC

Adapter

4.5-24 V

SYS

•

Personal Digital Assistants

Handheld Terminals

Adapter Detection

bq2707x

Industrial and Medical Equipment

Portable Equipment

Battery

Pack

SMBus Controls V & I

with high accuracy

Charge

Controller

R_SR

1S-4S

SMBus

HOST

Integration:

Loop Compensation; Soft-Start

Comparator

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...44

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与BQ24707_15相关器件

型号	品牌	获取价格	描述	数据表
bq24707A	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circu
BQ24707A_15	TI	获取价格	bq24707x 1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advan
BQ24707ARGRR	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circu
BQ24707ARGRT	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circu
BQ24707RGRR	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circu
BQ24707RGRT	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circu
BQ24715	TI	获取价格	2-3 Cell NVDC-1 Battery Charger Controller with Ultra-Fast Transient Response and High Lig
BQ24715_17	TI	获取价格	2-3 Cell NVDC-1 Battery Charger Controller with Ultra-Fast Transient Response and High Lig
BQ24715RGRR	TI	获取价格	2-3 Cell NVDC-1 Battery Charger Controller with Ultra-Fast Transient Response and High Lig
BQ24715RGRT	TI	获取价格	2-3 Cell NVDC-1 Battery Charger Controller with Ultra-Fast Transient Response and High Lig

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