LTC4096 Dual Input Standalone Li-Ion Battery Chargers

The LTC4096/LTC4096X are standalone linear chargers that are capable of charging a single-cell Li-Ion or Li-Polymer battery from both wall adapter and USB inputs. The chargers can detect power at the inputs and automatically select the appropriate power source for charging.

No external sense resistor or blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the battery charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. The LTC4096 terminates the charge cycle when the charge current drops below the user programmed termination threshold after the final float voltage is reached. The LTC4096 can be put into shutdown mode reducing the DCIN supply current to 20µA, the USBIN supply current to 10µA, and the battery drain current to less than 2µA even with power applied to both inputs.

Other features include trickle charge (LTC4096 only), automatic recharge, undervoltage lockout, charge status output and power present output with 120mA drive capability

产品特点 Features

Charges Single-Cell Li-Ion Battery from Wall Adapter and USB Inputs
Automatic Input Detection (DC Input has Charging Priority)
Charge Current Programmable up to 1.2A from Wall Adapter Input
C/X Charge Current Termination
Input Power Present Output (PWR) with 120mA Drive Capability
Independent DC, USB Charge Current Programming
Preset Float Voltage with ±0.6% Accuracy
Thermal Regulation Maximizes Charge Rate Without Risk of Overheating
Charge Status Output
Automatic Recharge
20µA Charger Quiescent Current in Shutdown
Available in a Thermally Enhanced, Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package

应用

Cellular Telephones
MP3 Players
Portable Handheld Devices

典型应用图

参数

LTC4096 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) *
LTC4096EDD	DFN	10	E	$2.28	$1.50
LTC4096EDD#PBF	DFN	10	E	$2.28	$1.50
LTC4096EDD#TR	DFN	10	E		$1.56
LTC4096EDD#TRPBF	DFN	10	E		$1.56
LTC4096XEDD	DFN	10	E	$2.28	$1.50
LTC4096XEDD#PBF	DFN	10	E	$2.28	$1.50
LTC4096XEDD#TR	DFN	10	E		$1.56
LTC4096XEDD#TRPBF	DFN	10	E		$1.56

LTC4096 数据手册及相关资料下载

数据手册(英文) : LTC4096/LTC4096X - Dual Input Standalone Li-Ion Battery Chargers.PDF
可靠性数据 : R540 Reliability Data .PDF
产品选型卡 : Energy Harvesting Portfolio.PDF