|
||
 |
The Engineering Toolbar
The Ultimate Resource for Engineering and Technical Research. (Learn More) |
Backing Up Epson Toyocom Real-Time Clock Chips
|
From Cymbet Corporation
Cymbet™ EnerChip™ solid state, thin film batteries are ideal as rechargeable backup power sources for real-time clock (RTC) chips, memories, microcontrollers and other low-power circuits where data or timing information must be retained in the absence of primary power. They come in standard integrated circuit packages and can be reflow soldered for high volume PCB assembly. This application note describes a test/demo kit and test procedures which allows a user to evaluate Cymbet batteries as a backup for Epson Toyocom RTC chips. The Cymbet Epson RTC Demo Board uses the Cymbet EVAL-01 circuit to charge an on-board Cymbet battery at a constant voltage. Please see AN-1003 for details. As the battery is charging, the charging current drops until the battery is fully charged. At full charge, the current is in the sub-nanoamps. A simple but effective technique prevents the battery from discharging through the charging circuit or the power supply during primary power outages. Products & Services
Rechargeable batteries or secondary batteries contain active materials that can be regenerated by charging. When the energy produced by rechargeable batteries drops below optimum efficiency, secondary batteries may be recharged in a couple of ways, depending upon their construction.
Search by Specification |
Learn more about Rechargeable (Secondary) Batteries
Lithium batteries have a lithium anode. They are available as both primary batteries and secondary batteries.
Search by Specification |
Learn more about Lithium Batteries
Industrial batteries translate chemical energy into electricity.
Search by Specification |
Learn more about Industrial Batteries
Product Announcements
Topics of Interest
Primary and secondary (i.e., rechargeable) coin cell batteries, as well as super capacitors, have been in use for years as auxiliary power sources for applications including SRAM, real-time clocks,...
(Read More)
Cymbet™ EnerChip™ thin film, solid state batteries feature all solid state construction, are packaged in standard integrated circuit packages, and can be reflow soldered for high volume...
(Read More)
The OceanServer Intelligent Battery and Power Systems (IBPS) allows the designer to add to the system design, any number of lithium ion smart battery packs as a power source for battery power or...
(Read More)
AN1137 Using the MCP1631 Family to Develop Low-Cost Battery Chargers COMMON CHARGE PROFILES Author: Terry Cleveland Microchip Technology Inc. NiMH Charge Profile INTRODUCTION Figure 1 shows a typical...
(Read More)
Driven by the need for untethered mobility and ease of use, many systems rely on rechargeable batteries as their primary power source. The battery charger is typically implemented using a...
(Read More)
|
|
