Electronic Components Datasheet Search |
|
LTC4070EDDBTRPBF Datasheet(PDF) 1 Page - Linear Technology |
|
LTC4070EDDBTRPBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LTC4070 1 4070f TYPICAL APPLICATION DESCRIPTION Li-Ion/Polymer Shunt Battery Charger System The LTC®4070 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. The 450nA to 50mA operating cur- rent makes charging possible from previously unusable sources. With the addition of an external pass device, shunt current may be boosted to 500mA. Stacked cell high voltage battery packs are inherently balanced with shunt charging. With its low operating current, the LTC4070 is well suited to charge thin film batteries in energy harvesting applications where charging sources may be intermittent or very low power. The unique architecture of the LTC4070 allows for an extremely simple battery charger solution; requiring just one external resistor. The LTC4070 offers a pin selectable float voltage with 1% accuracy across the full range of operating temperature and shunt current. The integrated thermal battery quali- fier extends battery lifetime and improves reliability by automatically reducing the battery float voltage at NTC thermistor temperatures above 40°C. The LTC4070 also provides both low and high battery status outputs. With the addition of an external PFET, the low-battery output pin can implement a latch-off function that automatically disconnects the system load from the battery to protect the battery from deep discharge. The device is offered in two thermally enhanced packages, a compact low profile (0.75mm) 8-lead (2mm × 3mm) DFN and an 8-lead MSOP package. FEATURES APPLICATIONS n Low Operating Current (450nA) n 1% Float Voltage Accuracy Over Full Temperature and Shunt Current Range n 50mA Maximum Internal Shunt Current (500mA with External PFET) n Pin Selectable Float Voltage Options: 4.0V, 4.1V, 4.2V n Ultralow Power Pulsed NTC Float Conditioning for Li-Ion/Polymer Protection n Suitable for Intermittent, Continuous and Very Low Power Charging Sources n Low and High Battery Status Outputs n Simple Low Voltage Load Disconnect Application n Thermally Enhanced, Low Profile (0.75mm) 8-Lead (2mm × 3mm) DFN and MSOP Packages n Low Power Li-Ion/Polymer Battery Back-Up n Solar Power Systems with Back-Up n Memory Back-Up n Embedded Automotive n Thin Film Batteries n Energy Scavenging/Harvesting L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.. NTC Overtemperature Battery Float Voltage Qualifying Simple Shunt Charger with Load Disconnect and NTC Conditioning TEMPERATURE (°C) 4.3 4.2 4.0 4.1 3.9 3.8 3.7 40 20 0 60 4070 TA01b 80 100 ADJ = VCC ADJ = FLOAT ADJ = GND 4070 TA01a LTC4070 ADJ RIN GND T 10k Li-Ion NTCBIAS LBO NTC VCC VIN + NTHS0805E3103LT Q1:FDR8508 |
Similar Part No. - LTC4070EDDBTRPBF |
|
Similar Description - LTC4070EDDBTRPBF |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |