Description
| FEATURES |
| – Inherently Matched LED Current – High Efficiency: 84% Typical – Drives Up to 27 LED LEDs from a 5V Supply – 36V Rugged Bipolar Switch – Fast 1.2MHz Switching Frequency – Uses Tiny 1mm Tall Inductors – Moisture Sensitivity Level 3 |
| DESCRIPTION |
| The LM1938 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or 27 LEDs from a 5V supply. Additional feature include output voltage limiting when LEDs are disconnected. |
