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- Model
- LM3590
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- Last added
- 2012-05-03
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National Semiconductor LM3590 Evaluation Board User Manual
The LM3590 Evaluation Board is designed to test and evaluate typical LM3590 application circuits. It features extra‑large pads for the input capacitor, current‑set resistor, and three white LEDs, as well as post holes for leaded pin‑sockets to simplify component changes and accommodate different package sizes.
The board is pre‑configured to deliver 20 mA to three series‑connected white LEDs with a minimum input voltage of 11.3 V. LED current is set by the external RSET resistor, and the EN pin provides an active‑high enable/shutdown function. The manual includes schematic details, component listings, and compliance information.
National Semiconductor LM3590 specifications
| Input voltage range | 6.0 V – 12.6 V |
|---|---|
| Maximum LED output current | 20 mA |
| Number of LEDs supported | Up to 3 white LEDs in series |
| Shutdown (quiescent) current | 0.1 pA typ. |
| Package | SOT23‑5 (3 mm × 3 mm × 1 mm) |
| Enable pin logic high level | 1.1 V |
Source: National Semiconductor LM3590 White LED Driver Datasheet
All National Semiconductor LM3590 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What input voltage range does the LM3590 accept?
The LM3590 operates from 6.0 V to 12.6 V input voltage.
From: National Semiconductor LM3590 White LED Driver Datasheet
How many white LEDs can be driven in series?
It can drive up to three stacked white LEDs.
From: National Semiconductor LM3590 White LED Driver Datasheet
How many white LEDs can the LM3590 drive and at what current?
It can drive up to three white LEDs in series, each at a constant 20 mA.
From: National Semiconductor LM3590 Evaluation Board User Manual
What input voltage range does the evaluation board require?
The board operates from 6.0 V to 12.6 V, with a minimum of 11.3 V for the three‑LED configuration.
From: National Semiconductor LM3590 Evaluation Board User Manual