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DESCRIPTION( u9 Y4 r; A6 N7 P( h; _
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 ±+ ~) {4 S. ^# h9 ]& q
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.
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FEATURES
$ ^3 x0 h9 Z: w% H Q( g 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
+ ~ \+ a6 [' X# N 500kHz Switching Frequency7 h% K! p7 ?- x' F, @
End-of-Charge Current Detection Output
3 C$ _; F- f" l. F 7 Hour Charge Termination Timer. @& T* J# \: i( d* w
±1% Charge Voltage Accuracy
o4 `8 J8 i" H4 ]' s$ a% b X8 v+ Z ±10% Charge Current Accuracy
# r: t" C I6 F3 _ Low 10μA Reverse Battery Drain Current
+ j' d8 i+ P' w+ f) w5 M, s: P% d Automatic Battery Recharge
: V, Y- y6 v2 F9 N6 f; T9 { Automatic Trickle Charging of Low Voltage Batteries& q6 e0 r K+ \6 z; Q: c
Automatic Sleep Mode for Low Power Consumption. h) g; V2 a- l; q" \+ G% B4 |; _
Battery Temperature Sensing
0 w( T K* k+ ~; H9 \ Stable with Ceramic Output Capacitor# W# Q* ~# i2 `2 C
Support up to 3A Charge Current
! e$ J! u# k) c# G+ A, E 8-Lead SOP and 10-Lead TDFN Packages# ` k t0 P/ i% I. g, B7 v3 o
RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free
/ c6 z5 x: z( q4 h7 oAPPLICATIONS& a" G$ `% V" Q( B T' G% U
Small Notebook Computer( b+ p) Z1 h& A$ [9 c
Portable DVD( Z/ H, ]& r$ }1 l1 s
Handheld Instruments
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发表于 2022-12-7 11:09
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