LTC4061-4.4 Standalone linear Li-Ion Battery Charger with Thermistor Input

The LTC®4061-4.4 is a full-featured, flexible, standalone linear charger for single-cell 4.375V Lithium-Ion batteries. It is capable of operating within USB power specifications.

Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. Additional safety features designed to maximize battery lifetime and reliability include NTC battery temperature sensing and the SmartStart charging algorithm.

No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The charge current is programmed with an external resistor. With power applied, the LTC4061-4.4 can be put into shutdown mode to reduce the supply current to 20µA and the battery drain current to less than 5µA.

Other features include smart recharge, USB C/5 current programming input, undervoltage lockout and AC Present logic output

产品特点 Features

Charge Current Programmable up to 1A
Charges Single Cell Li-Ion Batteries Directly from USB Port
Preset 4.375V Float Voltage with ±0.4% Accuracy
Thermistor Input for Temperature Qualified Charging
Input Supply Present Logic Output
Thermal Regulation Maximizes Charge Rate Without Risk of Overheating*
Programmable Charge Current Detection/Termination
Programmable Charge Termination Timer
Smart Pulsing Error Feature
SmartStartTM Prolongs Battery Life
20µA Charger Quiescent Current in Shutdown
Available in a Low Profile (0.75mm) 10-Lead
(3mm × 3mm) DFN Package

应用

Handheld Computers
Portable MP3 Players
Digital Cameras

典型应用图

参数

LTC4061-4.4 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC4061EDD	DFN	10	E	$2.32	$1.95
LTC4061EDD#PBF	DFN	10	E	$2.32	$1.95
LTC4061EDD#TR	DFN	10	E		$2.05
LTC4061EDD#TRPBF	DFN	10	E		$2.05
LTC4061EDD-4.4	DFN	10	E	$2.93	$2.05
LTC4061EDD-4.4#PBF	DFN	10	E	$2.93	$2.05
LTC4061EDD-4.4#TR	DFN	10	E		$2.15
LTC4061EDD-4.4#TRPBF	DFN	10	E		$2.15

LTC4061-4.4 数据手册及相关资料下载

数据手册(英文) : LTC4061-4.4 - Standalone linear Li-Ion Battery Charger with Thermistor Input.PDF
可靠性数据 : R402 Reliability Data .PDF
产品选型卡 : I2C Battery Gas Gauges.PDF