Datasheet > EUP8202-42DIR1

EUP8202-42DIR1

更新时间： 2024-09-13 04:17:51

品牌	Logo	应用领域
德信 - EUTECH		电池开关
页数	文件大小	规格书
21页	553K
描述
Switch Mode Li-Ion/Polymer Battery Charger

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中文翻译

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数据手册

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EUP8202-42DIR1 数据手册

EUP8202-4.2/8.4

Switch Mode Li-Ion/Polymer

Battery Charger

DESCRIPTION

FEATURES

Wide Input Supply Voltage Range:

4.7V to 20V – 4.2 Version

8.9V to 20V – 8.4 Version

500kHz Switching Frequency

End-of-Charge Current Detection Output

3 Hour Charge Termination Timer

The EUP8202 is a constant current, constant voltage

Li-Ion battery charger controller that uses a current mode

PWM step-down (buck) switching architecture. With a

500kHz switching frequency, the EUP8202 provides a

small, simple and efficient solution to fast charge one

(4.2V) or two (8.4V) cell lithium-ion batteries.

The EUP8202 charges the battery in three phases:

conditioning, constant current, and constant voltage. An

external sense resistor sets the charge current with ±10%

accuracy. An internal resistor divider and precision

reference set the final float voltage to 4.2V per cell with ±

1% accuracy. An internal comparator detects the near

end-of-charge condition while an internal timer sets the

total charge time and terminates the charge cycle. The

EUP8202 automatically re-starts the charge if the battery

voltage falls below an internal threshold, 4.05V per cell.

The EUP8202 also automatically enters sleep mode when

DC supplies are removed.

z ±1% Charge Voltage Accuracy

z ±10% Charge Current Accuracy

Low 10µA Reverse Battery Drain Current

Automatic Battery Recharge

Automatic Trickle Charging of Low Voltage

Batteries

Automatic Sleep Mode for Low Power

Consumption

Battery Temperature Sensing

Stable with Ceramic Output Capacitor

8-Lead SOP and 10-Lead TDFN Packages

RoHS Compliant and 100% Lead (Pb)-Free

The EUP8202 is available in the 8-lead SOP and 10-lead

TDFN packages.

APPLICATIONS

Small Notebook Computer

Portable DVD

Handheld Instruments

Typical Operating Performance

Efficiency vs Input voltage

100

(Curves include input diode)

EUP8202-8.4

EUP8202-4.2

VBAT=3.8V

VBAT=4.0V

VBAT=7.0V

VBAT=8.0V

Input Voltage (V)

DS8202 Ver 1.1 Nov.2007

12 3 4 5 6 7...21

中文翻译

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