Demonstration circuit 1379A demo board featuring the LTM®8025 µModule® is designed to deliver a 3.3V output from a 5.5V to 36V input. The wide input range of the LTM8025 allows a variety of input sources such as automotive batteries, wall adaptors and industrial supplies.
The modes of operation (Burst Mode® operation or synchronization) are jumper-selectable. Burst Mode operation improves efficiency at light loads. The LTM8025 can be synchronized over a 250kHz to 2MHz range.
The current mode control scheme creates fast transient response and good loop stability. The RUN/SS pin can be used to set the part in micropower shutdown mode, reducing the supply current to less than 1µA. The RUN/SS pin can also be used to program soft-start. In this mode, the RUN/SS pin is driven through an external RC filter to create a voltage ramp on this pin reducing the input current surge during start-up.
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | DC1379A-ND |
| Eval Board Supplier | Analog Devices Inc. |
| Eval Board |
Board not Stocked
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
3.3 V
|
| Current Out |
3 A
|
| Voltage In |
5.5 ~ 36 V
|
| Efficiency @ Conditions |
- Not Given
|
| Voltage Out Range |
0.8 ~ 24 V
|
| Features |
Internal Inductor
Light Load Mode Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection |
| Switching Frequency |
750 kHz
|
| Standby Current [Typical] |
10 nA
|
| Quiescent Current [Typical] |
85 µA
|
| Component Count + Extras |
8 + 17
|
| Internal Switch |
Yes
|
| Design Author |
Linear Technology
|
| Application / Target Market |
Automotive
Point of Load (PoL) |
| Standby Current [Maximum] |
1 µA
|
| Quiescent Current [Maximum] |
150 µA
|
| Main I.C. Base Part |
LTM8025
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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