ELM614BA
2A, 18V, 500kHz, synchronous step down DC/DC converter
ELM614BA is a high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current over a wide input supply range, with excellent load and line regulation. ELM614BA has synchronous-mode operation for higher efficiency over the output current-load range. Current-mode operation provides fast transient response and eases loop stabilization. Protection features include over-current protection and thermal shutdown. ELM614BA requires a minimal number of readily available, standard external components and is available in space-saving SOT-26 package.
| Internal soft start | |
|---|---|
| Over current protection | |
| Over temperature protection | |
| Input voltage | 4.5V to 18.0V |
| Output adjustable voltage | 0.8V to 15.0V |
| Output current | 2A |
| Integrated power MOSFET switches | 140mΩ/90mΩ |
| Shutdown current | Typ 3µA |
| High efficiency | 95% |
| Constant frequency | Typ 500kHz |
| Package | SOT-26 |
| Datasheet | ELM614BA |
- Application
- Distributed power systems
- Networking systems
- FPGA, DSP, ASIC power supplies
- Notebook computers
- Green electronics or appliance
Absolute Maximum Ratings
| Parameter | Symbol | Limit | Unit |
|---|---|---|---|
| Supply voltage | Vin | -0.3 to +19.0 | V |
| Switch node | Vsw | -0.3 to Vin+0.3 | V |
| Boost voltage | Vboot | Vsw-0.3 to Vsw+6.0 | V |
| All other pins | Vall | -0.3 to +6.0 | V |
| Power dissipation | Pd | 1200 | mW |
| Junction temperature | Tj | +150 | °C |
| Operating temperature range | Top | -40 to +85 | °C |
| Storage temperature range | Tstg | -65 to +150 | °C |
Block diagram
