The L5970D is a step down monolithic power switching regulator capable to deliver up to 1A at output voltages from 1.235V to 35V (If Vin = 36V). This eval board design is able to run from 4.4 to 25V.
An internal oscillator fixes the switching frequency at 250KHz. This minimizes the LC output filter. Synchronization pin is available in the case higher frequency (up to 500KHz) is requested.
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | 497-4132-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
3.3 V
|
| Current Out |
1 A
|
| Voltage In |
4.4 ~ 36 V
|
| Efficiency @ Conditions |
>90%, 5V in, 3.3V @ 100 mA ~ 550 mA
>87%, 12V in, 5V @ 250 mA ~ 1 A >84%, 5V in, 2.5V @ 150 ~ 750 mA >82%, 12V in, 3.3V @ 300 mA ~ 1 A >78%, 5V in, 1.8V @ 150 mA ~ 750 mA >77%, 12V in, 2.5V @ 250 mA ~ 1 A |
| Voltage Out Range |
1.24 ~ Vin
|
| Features |
Short Circuit Protection
Synchronizable Thermal Protection |
| Switching Frequency |
250 kHz
|
| Standby Current [Typical] |
80 µA
|
| Quiescent Current [Typical] |
3 mA
|
| Component Count + Extras |
10 + 4
|
| Internal Switch |
Yes
|
| Design Author |
STMicroelectronics
|
| Application / Target Market |
Cell Phones
Computers Digital Cameras DVD/Blu-ray Players Medical Point of Load (PoL) Portable Devices Set-Top Boxes Telecom USB Powered Devices |
| Standby Current [Maximum] |
150 µA
|
| Quiescent Current [Maximum] |
5 mA
|
| Main I.C. Base Part |
L5970D
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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