Key facts
- Brand
- Linear Technology
- Model
- LTC3226
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
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Analog Devices LTC3226 Single-IC Supercapacitor-Based Power Supply Backup Solution Application Note
The LTC3226 simplifies the design of supercapacitor-powered backup applications by integrating a dual-mode charge pump, an LDO, an ideal diode controller, and a power-fail comparator into a single IC. It charges a supercapacitor stack when input power is available and delivers energy from the supercapacitor to the load when nominal input power fails.
The document details the operation of the LTC3226 in a typical 3.3V backup supply application, explaining how it maintains a full charge on the supercapacitor and seamlessly transitions to backup mode when the input voltage drops below a threshold. It also discusses the benefits of using supercapacitors over traditional batteries.
Linear Technology LTC3226 specifications
| Package Type | 3mm x 3mm 16-lead QFN |
|---|---|
| Backup Power Capacity (Example) | 165mW for about 45 seconds |
| Operating Current (Example) | 150mA |
Source: Linear Technology LTC3226 Supercapacitor-Based Power Backup System Design Note 498
All Linear Technology LTC3226 documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the LTC3226 used for?
The LTC3226 simplifies the design of a supercapacitor-powered backup solution that charges the supercapacitor when input power is available and delivers energy from it to the load when nominal input power fails.
From: Analog Devices LTC3226 Single-IC Supercapacitor-Based Power Supply Backup Solution Application Note
What voltage does the LTC3226 maintain on the supercapacitor stack?
As long as input power is available, the LTC3226 maintains the supercapacitor stack at a full 5v charge.
From: Analog Devices LTC3226 Single-IC Supercapacitor-Based Power Supply Backup Solution Application Note
What is the purpose of the power backup system described?
To protect important data stored in volatile memory when a handheld device's battery pops out or fails.
From: Linear Technology LTC3226 Supercapacitor-Based Power Backup System Design Note 498
What component is used to charge the supercapacitor stack?
The LTC3226, which includes a charge pump supercapacitor charger with programmable output voltage.
From: Linear Technology LTC3226 Supercapacitor-Based Power Backup System Design Note 498