dc2160af is a low voltage switch switch produced by Linear Technology Corporation. It can select the input power source according to the input voltage size to ensure the stability of the load power.
This document is a user manual for the DC2160A demonstration circuit, which uses the LTC4419 chip to prioritize power sources and manage switchover during brownout or power loss. The circuit allows V1 (12V) to have higher priority than V2 (5V), with automatic switching to V2 if V1 falls below 10.19V ±0.33V. The design includes LEDs, jumpers, and turrets for visual feedback and configuration. It also includes safety features like overcurrent and thermal protection, and reverse supply protection to prevent damage from negative voltages.
| Operating Supply Range | 1.8V to 18V |
|---|---|
| Switch Resistance | 1Ω to 5Ω |
| Input Qualification Time | 34ms to 94ms |
| ADJ Threshold | 1.032V to 1.062V |
| Current Limit | 0.5A to 1.6A |
| Reverse Comparator Threshold | 25mV to 75mV |
| Switch Break-Before-Make Time | 1µs to 5µs |
| V1 Switchover Voltage | 9.6V to 10.24V |
| V1 Alarm Voltage | 9.92V to 10.74V |
| V2 Alarm Voltage | 3.26V to 3.53V |
The switchover voltage for V1 is 9.6V to 10.24V.
The current limit is 0.5A to 1.6A.
The reverse comparator threshold is 25mV to 75mV.
The switch break-before-make time is 1µs to 5µs.