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HM4066-84SIR1 PDF预览

HM4066-84SIR1

更新时间: 2024-11-09 02:51:31
品牌 Logo 应用领域
华之美 - HMSEMI 电池
页数 文件大小 规格书
19页 1488K
描述
Switch Mode Li-Ion/Polymer Battery Charger

HM4066-84SIR1 数据手册

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HM4066-4.2 /8.4/ 8.34  
Switch Mode Li-Ion/Polymer  
Battery Charger  
DESCRIPTION  
FEATURES  
Wide Input Supply Voltage Range:  
The HM4066 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 HM4066 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 – 8.34 Version  
500kHz Switching Frequency  
End-of-Charge Current Detection Output  
12 Hour Charge Termination Timer  
±1% Charge Voltage Accuracy  
±10% Charge Current Accuracy  
Low 10µA Reverse Battery Drain Current  
Automatic Battery Recharge  
The HM4066 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  
HM4066 automatically re-starts the charge if the battery  
voltage falls below an internal threshold, 4.05V per cell.  
The HM4066 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  
Stable with Ceramic Output Capacitor  
Support up to 3A Charge Current  
8-Lead SOP Package  
The HM4066 is available in the 8-lead SOP package.  
RoHS Compliant and 100% Lead (Pb)-Free  
Halogen-Free  
APPLICATIONS  
Small Notebook Computer  
Portable DVD  
Typical Operating Performance  
Handheld Instruments  
Efficiency vs Input voltage  
Efficiency vs Input voltage  
100  
95  
90  
85  
80  
75  
70  
65  
60  
100  
(Curves include input diode)  
(Curves include input diode)  
95  
90  
85  
80  
75  
70  
HM4066-8.4  
HM4066-4.2  
VBAT=3.8V  
VBAT=4.0V  
VBAT=7.0V  
VBAT=8.0V  
65  
60  
5
10  
15  
20  
8
10  
12  
14  
16  
18  
20  
Input Voltage (V)  
Input Voltage (V)  
1

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