LTC1731-8.2 - LTC1731-8.2是Lithium-Ion Linear Battery Charger Controller

LTC1731-8.2是LINEAR凌力尔特公司的一款线性充电器产品，LTC1731-8.2是LTC1731-8.2是Lithium-Ion Linear Battery Charger Controller，本站介绍了LTC1731-8.2的封装应用图解、特点和优点、功能等，并给出了与LTC1731-8.2相关的LINEAR元器件型号供参考。

LTC1731-8.2 - LTC1731-8.2是Lithium-Ion Linear Battery Charger Controller - 线性充电器 - 电源管理 - 凌力尔特

LTC1731-8.2 - Lithium-Ion Linear Battery Charger Controller

LTC1731-8.4 - Lithium-Ion Linear Battery Charger Controller - Linear Technology（凌力尔特）

功能描述

The LTC1731-8.2/LTC1731-8.4 are complete constant-current/constant-voltage linear charger controllers for 2-cell lithium-ion (Li-Ion)batteries. Nickel-cadmium (NiCd) and nickel-metal-hydride (NiMH) batteries can also be charged with constant current using external termination. The external sense resistor sets the charge current with 7% accuracy. An internal resistor divider and precision reference set the final float potential with 1% accuracy. The output float voltages are set internally to 8.2V (LTC1731-8.2) or 8.4V (LTC1731-8.4).

When the input supply is removed, the LTC1731-8.2/LTC1731-8.4 automatically enter a low current sleep mode, dropping the battery drain current to typically 15µA. An internal comparator detects the end-of-charge (C/10) condition while a programmable timer, using an external capacitor, sets the total charge time. Fully discharged cells are automatically trickle charged at 10% of the programmed current until battery voltage exceeds 4.95V.

The LTC1731-8.2/LTC1731-8.4 are available in the 8-pin MSOP and SO packages. For 1-cell Li-Ion battery charging, see the LTC1731-4.1 and LTC1731-4.2 data sheets.

特点

Complete Linear Charger Controller for 2-Cell Lithium-Ion Batteries

1% Voltage Accuracy

Programmable Charge Current

C/10 Charge Current Detection Output

Programmable Charge Termination Timer

Space Saving 8-Pin MSOP Package

Automatic Sleep Mode When Input Supply is Removed (15µA Battery Drain)

Automatic Trickle Charging of Low Voltage Cells

Programmable for Constant-Current-Only Mode

应用

Cellular Phones

Handheld Computers

Charging Docks and Cradles

Programmable Current Source

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1731EMS8-8.2	MS-8	E	$2.20	$1.75
LTC1731EMS8-8.2#PBF	MS-8	E	$2.20	$1.75
LTC1731EMS8-8.2#TR	MS-8	E		$1.81
LTC1731EMS8-8.2#TRPBF	MS-8	E		$1.81
LTC1731EMS8-8.4	MS-8	E	$2.20	$1.75
LTC1731EMS8-8.4#PBF	MS-8	E	$2.20	$1.75
LTC1731EMS8-8.4#TR	MS-8	E		$1.81
LTC1731EMS8-8.4#TRPBF	MS-8	E		$1.81
LTC1731ES8-8.2	SO-8	E	$1.85	$1.55
LTC1731ES8-8.2#PBF	SO-8	E	$1.85	$1.55
LTC1731ES8-8.2#TR	SO-8	E		$1.61
LTC1731ES8-8.2#TRPBF	SO-8	E		$1.61
LTC1731ES8-8.4	SO-8	E	$1.85	$1.55
LTC1731ES8-8.4#PBF	SO-8	E	$1.85	$1.55
LTC1731ES8-8.4#TR	SO-8	E		$1.61
LTC1731ES8-8.4#TRPBF	SO-8	E		$1.61

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