LT1303/LT1303-5 Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable and Fixed 5V
The LT1303/LT1303-5 are micropower step‑up DC/DC converters that provide a regulated 5 V output from low‑voltage sources as low as 1.8 V. They feature burst‑mode operation, low quiescent current, and a built‑in low‑battery detector with an open‑collector output.
The document includes absolute maximum ratings, electrical characteristics, typical performance curves, pin descriptions, and recommended external components such as inductors, diodes, and capacitors. Application notes cover EL panel drivers, inductor selection, and layout recommendations for optimal efficiency and low ripple.
| Quiescent Current | 120 µA (typical) |
|---|---|
| Output Voltage / Current | 5 V at 200 mA from 2 V input |
| Efficiency | Up to 88 % (typical) |
| Switch Saturation Voltage | 170 mV at 1 A |
The LT1303 draws a typical quiescent current of 120 µA.
The device can achieve up to 88 % efficiency in burst‑mode operation.
The LT1303‑5 provides a regulated 5 V output at up to 200 mA.