Electronic Components Datasheet Search |
|
SC801IMLTR Datasheet(PDF) 1 Page - Semtech Corporation |
|
SC801IMLTR Datasheet(HTML) 1 Page - Semtech Corporation |
1 / 17 page 1 www.semtech.com 5+& Fully Integrated High Current Lithium-Ion Battery Charger System POWER MANAGEMENT Revision 3, April 2003 Description Features Applications Typical Application Circuit K Fully integrated charger with FET pass transistor, reverse-blocking diode, sense resistor and thermal protection K 4.1V, 4.2V & Adjustable Output Voltage K Programmable precharge, fastcharge & termination current K Battery voltage controlled to 1% accuracy K Soft-start for step load and adaptor plug-in K Up to 1.5A continuous charge current K Charge current monitor output from microcontroller or ADC Interface K Input voltages range from 4.2V to 14V K 0.1µA Battery leakage in shutdown and monitor modes K Operates without a battery in regulated LDO mode K Small 4mm x 4mm 16 lead MLP package K Low thermal impedance of 50°°°°°C/watt K Few external components K Over current protection in all charging modes K Over voltage protection K All outputs able to drive LEDs and interface to host processor K Remote Kelvin sensing at the battery terminal K Small input & output filter capacitors K Status output communicates charging and end of charge cycle K Now Available in Lead-Free Packaging K Charges Li-Ion, Li-Polymer, NiCd and NiMH Batteries K Cellular phones K PDAs and Handheld computers K Handheld meters K Charging stations K Digital cameras The SC801 is a fully integrated, single cell, constant-cur- rent/constant-voltage Lithium-Ion\Li-Polymer battery charger management system. The SC801 has built in in- telligence and extreme functionality. When the battery voltage is below 2.8V the charger operates in a pre- charge mode with a charging current of up to 125mA based on the ITERM pin resistor. This pre-charge mode is set to limit power dissipation due to an undercharged battery. When the battery voltage exceeds 2.8V, the charger enters a fast charge mode. In this mode, the SC801 delivers up to 1.5A to the battery based on the IPRGM pin resistor. The part also features current termination, ending the charge cycle when the battery is charged and the charge current drops below the current programmed by the ITERM pin resistor. In addition, the charge current can be monitored by the voltage on the IPRGM pin allowing a microcontroller or ADC to access the current informa- tion to determine when to externally terminate the charge cycle. Once the charge cycle is complete and terminates, the device enters the charge monitor mode where the output voltage of the battery is monitored. If this voltage drops below the recharge threshold the device will enter the fast charge mode again, to bring the battery to its fully charged state. Both the shutdown and monitor modes drain no more than 1uA from the battery guaran- teed. The output voltage to the battery is controlled to within 1% of the programmed voltage for either 4.1V or 4.2V. The SC801 can also function as a general purpose cur- rent source or as a current source for charging nickel- cadmium (NiCd) and nickel-metal-hydride (NiMH) batter- ies using external termination. CH A R G E R FA U LT B A TTE R Y R2 C H AR G E R VI N STATU S SC 80 1 14 1 3 7 4 15 9 10 2 11 5 8 13 6 16 12 VC C BSEN IP R G M EN ITE R M VO U T OV P STAT VPR G M CP NC BI P VC C GN D VO U T NC PR ESEN T C2 2.2uF R1 C1 1uF 88 R 1.5 Current n Terminatio 1000 R 1.5 Current Charge - Fast 88 R 2.8 Current Charge - Pre 2 1 2 • = • = • = |
Similar Part No. - SC801IMLTR |
|
Similar Description - SC801IMLTR |
|
|
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 |