Product category:
Power Supply ICs and Controllers
News Release from: Semtech | Subject: SC804
Edited by the Electronicstalk Editorial
Team on 18 January 2006
Charger chip cuts portable power system
costs
The SC804 is a linear single-cell lithium-ion battery charger with battery pack and adapter flexibility features to support lower design costs for portable devices.
Semtech Corp announces the SC804, a linear single-cell lithium-ion battery charger with battery pack and adapter flexibility features to support lower design costs for portable devices The SC804 is the newest member of Semtech's complete line of portable device battery chargers
This article was originally published on Electronicstalk on 16 Jul 2001 at 8.00am (UK)
Related stories
Low-cost miniature push-pull voltage controller
New from Semtech, the SC4820 is a low-power pulsewidth modulator (PWM) controller intended for power conversion using push-pull or bridge topologies.
Linear FET controllers for space-saving PSU design
Semtech has a new family of linear FET controllers that enable simple, space-saving design of distributed single and dual power supplies on primary and peripheral circuit boards.
The SC804 integrates a cold temperature offset (CTO) pin that allows designers to adjust the charging temperature range with a simple external resistor divider.
With this capability, a single board design can be used in multiple applications that require different temperature range limitations for charging.
The SC804 has an input voltage range of 3-14V.
Further reading
Dual linear regulator saves portable real estate
Semtech has announced production-level availability of the SC1452 150mA dual linear regulator.
High-density ATE pin-electronics chipset
Semtech has released a new high-performance high-density pin-electronics chipset for use in automated test equipment.
The maximum voltage level better protects portable systems from transients introduced from 12V adapter overshoots, or from the use of improper third-party adapters.
Undervoltage lockout (UVLO) has been lowered to 3V in the SC804 so it will work well with current-limited adapters.
"The SC804 builds on the solid foundation of Semtech's charger technology with the addition of features like the CTO pin and the wide voltage input range that provide the flexibility needed for next-generation devices", said Larry King, Semtech Vice President of Power Management for Handheld Products.
"With the SC804, manufacturers can take an additional step toward offering product variations that meet customers' needs and maximise the profitability of their systems".
As a fully integrated device, the SC804 features a FET pass transistor, reverse-blocking diode, sense resistor and thermal protection.
Other features of the device include an integrated timer and programmable precharge, fast-charge and termination current settings.
It can also be configured as general-purpose current source for charging nickel-cadmium (niCd) or nickel-metal-hydride (NiMH) batteries.
Two variants of the device are available supporting different output voltages.
The SC804 base device features a 4.2V output, and the SC804A features a 4.357V output.
The SC804 is packaged in a 4 x 4mm MLPQ package that is lead-free and complies with the European Union's RoHS Directive to meet worldwide environmental and regulatory requirements.
The SC804 is available immediately in production quantities and is priced at $1.43 each in 1000-piece lots.
Ordering code is SC804IMLTRT or SC804AMLTRT for the 4.357V output option.
Evaluation boards for both versions are also available.
Semtech offers comprehensive design assistance, including field- and factory-based support.
• Semtech: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
