LTC4095 Standalone USB Li-Ion/Polymer Battery Charger in 2mm x 2mm DFN

The LTC4095 is a complete constant-current/constantvoltage linear charger for single-cell lithium-ion/polymer batteries. Its small 2mm x 2mm DFN package and low external component count make the LTC4095 especially well-suited for portable USB power applications.

Up to 950mA of charge current may be programmed via a single resistor from the PROG pin to ground. The HPWR pin allows the charge current to be set at 20% or 100% of its full-scale programmed value. An internal safety timer terminates charge current. The final float voltage is preset to 4.2V and held to a tight 0.5% tolerance. Also featured is an NTC thermistor input to monitor battery temperature while charging, a C/10 current detection output, automatic recharge, bad-battery detection and low-battery trickle charge. A thermal feedback loop regulates the charge current to limit the die temperature during high power operation or high ambient thermal conditions.

The LTC4095 is available in a tiny, low profile (0.75mm) 8-lead 2mm × 2mm DFN package

产品特点 Features

Full-Featured Standalone USB Li-Ion/Polymer Battery Charger
100mA to 950mA Programmable Charge Current
C/10 Charge Current Detection Output
Internal Safety Timer Termination
NTC Thermistor Input for Temperature Qualified Charging
Preset 4.2V Float Voltage with 0.5% Accuracy
Constant-Current/Constant-Voltage Operation with Thermal Feedback
Charge Current Monitor Output for Gas Gauging
Automatic Recharge
Bad-Battery Detection
8.5µA Input Supply Current in Suspend Mode
Tiny 8-Lead (2mm × 2mm) DFN Package

应用

PDAs
Media Players
Cellular Phones
Other Portable Electronics

典型应用图

参数

LTC4095 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) *
LTC4095EDC#PBF	DFN	8	E	$1.64
LTC4095EDC#TRMPBF	DFN	8	E	$1.64	$1.20
LTC4095EDC#TRPBF	DFN	8	E	$1.64	$1.15

LTC4095 数据手册及相关资料下载

数据手册(英文) : LTC4095 - Standalone USB Li-Ion/Polymer Battery Charger in 2mm x 2mm DFN.PDF
可靠性数据 : R540 Reliability Data .PDF
产品选型卡 : Energy Harvesting Portfolio.PDF