DC1194A: 3.3V @ 200mA, 4.5 ~ 36V in, Inductor On-Chip
Summary
Demonstration circuit DC1194A features the LTM®8020, a 200mA DC/DC step-down μModule® regulator. The board is preset to deliver a 3.3V output at up to 200mA load current from an input voltage of up to 36V. The output voltage may be modified by simply changing one resistor.
The LTM®8020 is a complete 200mA, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 4V to 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors are needed to finish the design. The LTM8020 meets the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components.
The low profile (2.32mm) tiny package enables utilization of unused space on the bottom of PC boards for high density point of load regulation.
The LTM®8020 is a complete 200mA, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 4V to 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors are needed to finish the design. The LTM8020 meets the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components.
The low profile (2.32mm) tiny package enables utilization of unused space on the bottom of PC boards for high density point of load regulation.
Specifications
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | DC1194A-ND |
| Eval Board Supplier | Analog Devices Inc. |
| Eval Board |
Normally In Stock
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
3.3 V
|
| Current Out |
200 mA
|
| Voltage In |
4.5 ~ 36 V
|
| Efficiency @ Conditions |
>82%, 5V in, 3.3V @ 10 ~ 200 mA
>73%, 12V in, 3.3V @ 4 ~ 200 mA >67%, 24V in, 3.3V @ 3 ~ 200 mA >64%, 36V in, 3.3V @ 4 ~ 200 mA |
| Voltage Out Range |
1.25 ~ 5 V
|
| Features |
Internal Inductor
Light Load Mode |
| Switching Frequency |
450 kHz
|
| Standby Current [Typical] | |
| Quiescent Current [Typical] |
35 µA
|
| Component Count + Extras |
4 + 8
|
| Internal Switch |
Yes
|
| Design Author |
Linear Technology
|
| Application / Target Market |
Automotive
Point of Load (PoL) Portable Devices |
| Standby Current [Maximum] |
1 µA
|
| Quiescent Current [Maximum] |
50 µA
|
| Main I.C. Base Part |
LTM8020
|
| Date Created By Author | |
| Date Added To Library | 2012-04 |
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