Datasheet > EUP8207-4.2

EUP8207-4.2

更新时间： 2024-09-13 11:44:51

品牌	Logo	应用领域
德信 - EUTECH		电池开关
页数	文件大小	规格书
2页	126K
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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EUP8207-4.2 数据手册

EUP8207-4.2/8.4/8.4A

Switch Mode Li-Ion/Polymer

Battery Charger

DESCRIPTION

FEATURES

ꢀ

Wide Input Supply Voltage Range:

The EUP8207 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 EUP8207 provides a

small, simple and efficient solution to fast charge one

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

4.8V to 20V – 4.2 Version

8.9V to 20V – 8.4 Version

8.9V to 20V – 8.4A Version

ꢀ

500kHz Switching Frequency

End-of-Charge Current Detection Output

7 Hour Charge Termination Timer

±1% Charge Voltage Accuracy

±10% Charge Current Accuracy

Low 10µA Reverse Battery Drain Current

Automatic Battery Recharge

The EUP8207 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

EUP8207 automatically re-starts the charge if the battery

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

The EUP8207 also automatically enters sleep mode when

DC supplies are removed.

Automatic Trickle Charging of Low Voltage

Batteries

ꢀ

Automatic Sleep Mode for Low Power

Consumption

ꢀ

Battery Temperature Sensing

The EUP8207 is available in the 8-lead SOP and 10-lead

TDFN packages.

Stable with Ceramic Output Capacitor

8-Lead SOP and 10-Lead TDFN Packages

RoHS Compliant and 100% Lead (Pb)-Free

APPLICATIONS

ꢀ

Small Notebook Computer

Portable DVD

Handheld Instruments

Typical Operating Performance

Efficiency vs Input voltage

100

(Curves include input diode)

EUP8207-8.4

EUP8207-4.2

VBAT=3.8V

VBAT=4.0V

VBAT=7.0V

VBAT=8.0V

Input Voltage (V)

DS8207 Ver 1.1 May 2011

中文翻译

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