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DESCRIPTION$ B, P9 `3 Z. U* \
The 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 ±
: t; Y' X' z8 u6 p4 X: d3 Q1% 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.
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FEATURES
! z$ z2 _: X# N1 N4 d 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
6 N* r6 z( I7 Z8 o4 f 500kHz Switching Frequency
& p; p. x D. |& K End-of-Charge Current Detection Output3 @ N+ w' o& j# }0 D9 U
7 Hour Charge Termination Timer3 y- f/ ^1 t9 |6 D% l
±1% Charge Voltage Accuracy8 [! e$ c; q! \7 M
±10% Charge Current Accuracy3 l' K: X; O) O, P4 C4 S7 q
Low 10μA Reverse Battery Drain Current2 k$ \ b/ b2 R5 Q' _, W# u- @+ ~/ L
Automatic Battery Recharge' m n" l! v# S1 k- o) T
Automatic Trickle Charging of Low Voltage Batteries
; ^( D+ D/ e/ M/ a: T/ Z: H Automatic Sleep Mode for Low Power Consumption
& n+ N! k, p3 y, \ Battery Temperature Sensing# \ t" {- n$ I
Stable with Ceramic Output Capacitor; |9 q* r- N/ m% |; Z& V% `& h
Support up to 3A Charge Current- |6 P! Y+ Q! ]1 C1 Y
8-Lead SOP and 10-Lead TDFN Packages
0 o o! M' Y! G/ ?. ~, z7 U7 ?. f RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free
$ Y9 o) j- P; ^APPLICATIONS
0 Q0 W" t: [! \ Small Notebook Computer
, h, K4 K0 b& b( _5 K/ j' a. B Portable DVD* z6 p) F2 v% L) p8 e1 N$ Y+ _% U
Handheld Instruments ( ?: U" A W- a) n
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发表于 2022-12-7 11:09
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