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DESCRIPTION
c ^6 k- q8 a/ M& `3 CThe AP6067 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 AP6067 provides a small, simple and efficient solution to fast charge one (4.2V) or two (8.4V) cell lithium-ion batteries. The AP6067 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 ±; U0 g0 o4 z3 o9 t6 L( k; O
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 AP6067 automatically re-starts the charge if the b attery voltage falls below an internal threshold, 4.05V per cell. The AP6067 also automatically enters sleep mode wh en DC supplies are removed. The AP6067 is available in the 8-lead SOP and 10-l ead TDFN packages. ( N+ p& s8 F. x
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FEATURES
, { e# T3 j1 ], ] Wide Input Supply Voltage Range: 4.8V to 20V – 4.2 Version 8.9V to 20V – 8.4 Version 8.9V to 20V – 8.4A Version& D/ ~& F8 U) `, A& ?
500kHz Switching Frequency4 y$ s. m3 `1 _# z0 U
End-of-Charge Current Detection Output
/ @/ ^$ S" P ~6 R& E* s" ~, J 7 Hour Charge Termination Timer- I! w q' }9 G* a- ~8 N
±1% Charge Voltage Accuracy" {. S) j2 m% y. d: e
±10% Charge Current Accuracy. Q! G# ~' |2 W0 |( h
Low 10μA Reverse Battery Drain Current& M$ @3 A: J( l
Automatic Battery Recharge
! I2 m9 g$ b/ y5 T3 ?0 \% R2 T6 Q/ { Automatic Trickle Charging of Low Voltage Batteries
n% `1 C1 l. F Automatic Sleep Mode for Low Power Consumption4 ^9 T! x# h6 l- X9 m
Battery Temperature Sensing: o" f0 E0 i! `4 e; J: A
Stable with Ceramic Output Capacitor1 ]: A' z# Y% ~( o& \
Support up to 3A Charge Current. z0 }/ S0 v+ h1 K+ t1 n4 f
8-Lead SOP and 10-Lead TDFN Packages/ J8 S8 s6 {! K+ s
RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free
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Small Notebook Computer
! a& d; q M4 v' M Portable DVD
9 A o: e, Y& ^; b A) ~ Handheld Instruments
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发表于 2022-12-7 11:09
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