Datasheet > ISL78693ARZ

ISL78693ARZ

更新时间： 2024-01-19 16:34:07

品牌	Logo	应用领域
瑞萨 - RENESAS		电池
页数	文件大小	规格书
18页	966K
描述
Automotive Single-Cell LiFePO4 Battery Charger

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ISL78693ARZ 数据手册

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ISL78693

Automotive Single-Cell LiFePO4 Battery Charger

FN8891

Rev 1.00

December 12, 2016

The ISL78693 is an integrated single-cell Li-ion or Li-polymer

battery charger capable of operating with an input voltage

as low as 2.65V (cold crank case). This charger is designed to

work with various types of AC adapters or a USB port.

Features

• Complete charger for single-cell Lithium chemistry batteries

• Integrated power transistor and current sensor

• Reverse battery leakage 700nA

The ISL78693 operates as a linear charger when the AC

adapter is a voltage source. The battery is charged in a

Constant Current/Constant Voltage (CC/CV) profile. The charge

current is programmable with an external resistor up to 1A.

The ISL78693 can also work with a current-limited adapter to

minimize the thermal dissipation.

• 1% initial voltage accuracy

• Programmable CC current up to 1A

• Charge current thermal foldback

• NTC thermistor interface for battery temperature alert

• Accepts CV and CC types of adapters or USB bus power

• Preconditioning trickle charge

The ISL78693 features charge current thermal foldback to

ensure safe operation when the printed circuit board’s thermal

dissipation is limited due to space constraints. Additional

features include preconditioning of an over-discharged battery,

an NTC thermistor interface for charging the battery in a safe

temperature range, and automatic recharge. The device is

specified for operation in ambient temperatures from -40°C to

+85°C and is offered in a 3x3mm thermally enhanced DFN

package.

• Guaranteed to operate down to 2.65V after start-up

• Ambient temperature range: -40°C to +85°C

• AEC-Q100 qualified

Applications

• Automotive systems

• eCall systems

Related Literature

• For a full list of related documents, visit our website

- ISL78693 product page

• Backup battery systems

CONSTANT

CURRENT

MODE

CONSTANT

VOLTAGE

MODE

TRICKLE

MODE

INHIBIT

V_IN

INPUT VOLTAGE

V_CH

BATTERY

PACK

ISL78693

BATTERY VOLTAGE

VIN

BAT

10µF

100k

V_TRICKLE

100k

TEMP

2x10µF

FAULT

STATUS

V2P8

IREF

I_CHARGE

160k

TIME

GND

1µF

CHARGE CURRENT

CTIME

15nF

_CHARGE/10

TIMEOUT

FIGURE 2. TYPICAL CHARGE CURVES USING A CONSTANT

VOLTAGE ADAPTER

FIGURE 1. TYPICAL APPLICATION

‘

FN8891 Rev 1.00

December 12, 2016

Page 1 of 18

12 3 4 5 6 7...18

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ISL78840ASEHVX	INTERSIL	获取价格	Radiation Hardened, High Performance Industry Standard Single-Ended Current Mode PWM Contr
ISL78840ASRH	INTERSIL	获取价格	Radiation Hardened, High Performance IndustryStandard Single-Ended Current Mode PWM Contro
ISL78840ASRH	RENESAS	获取价格	Radiation Hardened, High Performance Industry Standard Single-Ended Current Mode PWM Contr
ISL78840ASRH_10	INTERSIL	获取价格	High Performance Industry Standard Single-Ended Current Mode PWM Controller

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