DC1964A

DC1964A is a demonstration circuit featuring LTC®3110 a 2A, bidirectional buck-boost DC/DC regulator and charger/balancer. Its wide voltage range both in capacitor/battery charger mode and in system backup mode makes it well-suited to wide variety of applications using supercapacitors and batteries. The main features of this board include a wide capacitor voltage range from 0.1 to 5.5V, when controller works as backup, buck-boost converter. The input voltage range is also wide, 1.8 to 5.25V, when controller works as charger. LTC3110 also features automatic switching from charge to backup mode, programmable ±2% accurate charge current, automatic capacitor balancing, Burst Mode® operation, multipurpose comparator, and open-collector outputs to indicate direction of operation and end of charge. The 1.2MHz constant-frequency operation results in a small and efficient circuit. In backup mode LTC3110 provides high output voltage accuracy over a wide load range with no min load requirement.

• Efficiency typical, DC/DC mode is 93% at backup mode