SC802IMLTRT/AIMLTRT, SC802S, SC803 Selling Leads, Datasheet
MFG:SEMTECH Package Cooled:06+ D/C:09+
SC802IMLTRT/AIMLTRT, SC802S, SC803 Datasheet download
Part Number: SC802IMLTRT/AIMLTRT
MFG: SEMTECH
Package Cooled: 06+
D/C: 09+
SC802IMLTRT/AIMLTRT, SC802S, SC803
- Table of contents:
Info of SC802IMLTRT/AIMLTRT
Info of SC802S
Info of SC803
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About SC8
PDF/DataSheet Download
Datasheet: SC8
File Size: 401807 KB
Manufacturer: TRSYS
Download : Click here to Download
About SC8
PDF/DataSheet Download
Datasheet: SC8
File Size: 401807 KB
Manufacturer: TRSYS
Download : Click here to Download
About SC803
PDF/DataSheet Download
Datasheet: SC803
File Size: 755592 KB
Manufacturer: SEMTECH
Download : Click here to Download
SC803 General Description
The SC803 is a fully integrated, single cell, constant-current constant-voltage Lithium-Ion battery charger management system. The SC803 has built in intelligence 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 SC803 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 information 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 guaranteed.
The output voltage to the battery is controlled to within 1% of the programmed voltage for either 4.1V or 4.2V. The SC803 can also function as a general purpose current source or as a current source for charging nickelcadmium (NiCd) and nickel-metal-hydride (NiMH) batteries using external termination.
SC803 Features
Fully integrated charger with FET pass transistor, reverse-blocking diode, sense resistor and thermal protection
Complete voltage ranges of 4.1V, 4.2V & adjustable
Programmable precharge, fastcharge & termination current
Battery voltage controlled to 1% accuracy
Soft-start for step load and adaptor plug-in
Up to 1.5A continuous charge current
Charge current monitor output from microcontroller or ADC Interface
Input voltages range from 4.2V to 7V
0.1µA Battery drain current in shutdown and monitor modes
Operates without a battery in regulated LDO mode
Small 4mm x 4mm 16 lead MLP package
Low thermal impedance of 50°C/watt
Few external components
Over current protection in all charging modes
Over voltage protection with fault pin output
All outputs able to drive LED's and interface to host processor
Remote Kelvin sensing at the battery terminal
Small input & output filter capacitors
Status output communicates charging and end of charge cycle
Complete voltage ranges of 4.1V, 4.2V & adjustable
Programmable precharge, fastcharge & termination current
Battery voltage controlled to 1% accuracy
Soft-start for step load and adaptor plug-in
Up to 1.5A continuous charge current
Charge current monitor output from microcontroller or ADC Interface
Input voltages range from 4.2V to 7V
0.1µA Battery drain current in shutdown and monitor modes
Operates without a battery in regulated LDO mode
Small 4mm x 4mm 16 lead MLP package
Low thermal impedance of 50°C/watt
Few external components
Over current protection in all charging modes
Over voltage protection with fault pin output
All outputs able to drive LED's and interface to host processor
Remote Kelvin sensing at the battery terminal
Small input & output filter capacitors
Status output communicates charging and end of charge cycle
SC803 Typical Application
Cellular phones
PDA's
Handheld meters
Charging stations
Handheld computers
Digital cameras
Programmable current source
PDA's
Handheld meters
Charging stations
Handheld computers
Digital cameras
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