National Semiconductor LM3310 Data Handbook/Specifications Sheet
Summary
The LM3310 is an integrated DC/DC step-up converter featuring a boost architecture combined with built-in Op-Amp circuitry and Gate Pulse Modulation (GPM) switch capabilities. It provides stable power generation with adjustable outputs up to 20V, supporting applications like portable electronics and TFT bias supplies. This comprehensive manual details the device's operation envelope, including pinouts, key electrical characteristics, thermal parameters, and functional diagrams. It is essential technical documentation for engineers designing high-efficiency, low-ripple boosting solutions.
Manual Details
| Brand | National |
|---|---|
| Pages | 25 |
| File Size | 1.61 MB |
| Published | June 01, 2026 |
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Frequently Asked Questions
How can I set the operating switching frequency?
Connect Pin 16 (FREQ) to V for 1.28MHz or to AGND for 660kHz operation.
Which pins should be connected to the Die Attach Pad (DAP)?
Both AGND and PGND must be connected directly to the DAP beneath the device.
How do I temporarily disable the LM3310 converter?
Pin 19 (SHDN) is an active low shutdown pin; pulling this pin low disables the unit.
What controls the soft-start time?
The adjustable function uses the external soft-start pin (Pin 14) to allow tailored soft-start timing.