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DESCRIPTION
# C5 U- \6 t2 `: d9 NThe 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 ±
. z8 G1 F! c; N- a/ \& [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. 8 K' }& j6 p) {3 ^/ f
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C2 h' Y- u4 D/ D/ l- b7 SFEATURES
) v. |2 i& H8 f9 W `$ {+ Z 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 Version3 L# y) M2 x3 _, R$ G
500kHz Switching Frequency
" [8 C- a! ?$ ]& p: l$ i End-of-Charge Current Detection Output
' \+ b$ @& S; w" c, w 7 Hour Charge Termination Timer' N8 m. m; d- h1 }7 s c8 f
±1% Charge Voltage Accuracy4 S; I0 e! n: x- U; e U
±10% Charge Current Accuracy7 c7 p$ `% j. a/ e0 s
Low 10μA Reverse Battery Drain Current
8 ]+ V6 t5 Q2 H Automatic Battery Recharge
. O8 A, Q0 }# D4 V7 }3 l$ D Automatic Trickle Charging of Low Voltage Batteries1 e" P2 O7 o/ K+ t: p a
Automatic Sleep Mode for Low Power Consumption) v5 K2 m: o; ^0 J0 ^2 ]3 j8 c
Battery Temperature Sensing+ i7 T0 M& _" Y8 u
Stable with Ceramic Output Capacitor: q0 r6 K! F9 M4 J$ s6 V0 \
Support up to 3A Charge Current
3 M; K7 M% U% B9 \2 {1 k9 F2 p3 S 8-Lead SOP and 10-Lead TDFN Packages& c$ K: y0 Q% f2 Q5 z3 w8 x( q
RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free
1 j9 ~9 R' h+ G: T% n, @/ WAPPLICATIONS W& E1 `9 e! {- _& p9 B$ L2 @
Small Notebook Computer/ {# v6 j9 s! J6 w/ R
Portable DVD
# X$ l& z* y _ Handheld Instruments
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发表于 2022-12-7 11:09
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