SC811 / SC813 Tri-Mode Adapter/USB:Pinout,Datasheet,Features

The SC811 is highly versatile single input triple mode (adapter/USB high current, USB low current) linear single-cell Li-ion battery chargers, each in an 8 lead 2x2 MLPD ultra-thin package. The input will survive sustained input voltage up to 30V to protect against hot plug overshoot and faulty charging adapters. The SC811 has 9.6V rising, 8.2V falling OVP thresholds for general purpose charging with low cost adaptors. The SC813 has 6V rising, 5.6V falling OVP thresholds for customers utilizing charging adapters with specifi cations that are similar to a USB Vbus supply. The SC811 and SC813 differ only in OVP threshold. 

Charging begins automatically when an input source is applied to the charging input. Thermal limiting protects against excessive power dissipation. The charger can be programmed to turn off when charging is complete or to continue operating as an LDO regulator while fl oat-charging the battery. 

Three charging modes are provided: adapter mode, USB low power mode, and USB high power mode. Batterycapacity-dependent and charging source-dependent current programming are independently programmed. Adapter and USB high power modes can charge up to 1A, with the charging adapter operating either in voltage regulation or in current limit to obtain the lowest possible power dissipation. A single current programming pin is used to program pre-charge, termination, and adaptermode fast-charge currents in fixed proportions. In the USB modes, a second programming pin is used to program low power pre-charge current and low and high power fast-charge currents. This confi guration allows independent programming of termination current. The two USB modes dynamically limit the charging load if necessary to prevent overloading the USB Vbus supply.

SC811 Footprint 

SC811 3D Model

Single input charger with three charging modes 

Constant voltage — 4.2V, 1% regulation

Fast-charge current regulation — 15% at 70mA, 9% at 700mA 

Charging by current regulation, voltage regulation, and thermal limiting 

Input voltage protection — 30V 

Current-limited adapter support capability — reduces power dissipation in charger IC 

USB high and low power modes limit charge current to prevent USB Vbus overload 

Instantaneous CC-to-CV transition for faster charging 

Programmable battery-dependent currents (adapter mode fast- and pre-charge, termination) 

Programmable source-limited currents (USB-high mode fast-charge, and USB-low mode fast- and pre-charge)

 Independent programming of termination current with dual-mode operation 

Three termination options — fl oat-charge, automatic re-charge, or forced re-charge to keep the battery topped-off after termination without fl oat-charging 

Soft-start reduces adapter or USB load transients 

High operating voltage range of SC811 permits use of unregulated adapters 

Complies with CCSA YD/T 1591-2006 

Space saving 2x2x0.6 (mm) MLPD package 

WEEE and RoHS compliant

Semtech Corporation SC811ULTRT technical specifications, attributes, parameters and parts with similar specifications to Semtech Corporation SC811ULTRT.

Mobile phones 

MP3 players 

GPS handheld receivers

SC811 Package

SC811 Dimension

Semtech Corporation is a supplier of analog and mixed-signal semiconductors and advanced algorithms for consumer, enterprise computing, communications and industrial end-markets. It is based in Camarillo, Ventura County, Southern California. It was founded in 1960 in Newbury Park, California. It has 32 locations in 15 countries in North America, Europe, and Asia.[5]

Semtech is the developer of LoRa, a long-range networking initiative for the Internet of Things.[6] As of March 2021, over 178 million devices use LoRa worldwide.[7] LoRa has been used in satellites, tracking of animals,[8] and natural disaster prediction.[9]

Semtech has been publicly traded since 1967. In 1995, Semtech ranked fifth on the Bloomberg 100 list of top-performing stocks of 1995 on the New York and American stock exchanges and the NASDAQ National Market.[10]

Download datasheets and manufacturer documentation for Semtech Corporation SC811ULTRT.