RD-171 LM5001: +/- 5V @ 250mA, 10 ~ 30V in
Summary
A very low noise differential power supply for split rail systems requiring low noise +5V and -5V (higher or lower voltage is possible). This design is fully isolated and capable of floating to over 500V differential from Vin to Vout (higher is possible).
The LM5001 IC is a fully integrated flyback regulator which performs all of the current mode control for tight regulation and transient response. The design is small and uses only one side of a double sided FR4 PCB for components.
This design provides very low noise bias rails for ground referenced analog circuitry (under 20 mV p-p total noise up to 1GHz). The design utilizes a very small size PCB footprint.
Specifications
| Manufacturer | Texas Instruments |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Multi Output |
| Eval Board |
Board not Stocked
|
| Topology |
Step Down
|
| Outputs and Type |
2 Isolated
|
| Voltage Out: Highest Current First |
±5V
|
| Current Out |
250mA per Channel
|
| Voltage In |
10 ~ 30 V
|
| Efficiency @ Conditions |
>77%, 30V in, ±5V @ 100 ~ 250 mA
|
| Voltage Out Range |
- Not Given
|
| Features |
Current Limit (Adj. or Fixed)
Shutdown, Enable, Standby Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
600 kHz
|
| Standby Current [Typical] |
95 µA
|
| Quiescent Current [Typical] |
3.1 mA
|
| Component Count + Extras |
35 + 2
|
| Internal Switch |
Yes
|
| Design Author |
Texas Instruments
|
| Application / Target Market |
Audio: Powered Speakers
Medical |
| Standby Current [Maximum] |
130 µA
|
| Quiescent Current [Maximum] |
4.5 mA
|
| Main I.C. Base Part |
LM5001
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
