LP3321B6F
LOWPOWER
Needs validationlow risk
Strong candidate from the same manufacturer with matching key electrical parameters and package.
Best Alternatives to LP3320B6F
LP3320B6F is a 1MHz boost LED driver in a SOT23-6 package. Key alternatives exist, but require careful review of output voltage, switching frequency, and external components.
AI replacement insight
Electrical riskmedium
Many alternatives have lower output voltage or different feedback/frequency values, requiring redesign.
Package risklow
SOT23-6 is a standard package with many options available.
Can it be replaced directly?
Direct replacement for LP3320B6F should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with Datasheet verified or Strong match candidates for LP3320B6F, then review parametric alternatives for package and electrical fit.
Main risk
The main risk is using an alternative with a lower maximum output voltage (e.g., 30V vs 37V), which will fail in applications driving a long string of LEDs.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | LP3320B6F | LP3321B6F | PAM2803AAF095 | STI9287B | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT23-6 | SOT23-6 | SOT23-6 | SOT23-6 | SOT23-6 — Identical package and pin count.; PAM2803AAF095: Identical package and pin count.; STI9287B: Identical package and pin count. |
| Voltage | 37V | 37V | Missing | 30V | 37V / Missing / 30V — Maximum output voltage matches.; PAM2803AAF095: Maximum output voltage is not specified.; STI9287B: Lower max output voltage limits LED string length. |
| Current | 1.5A | 1.5A | - | - | 1.5A — Switch current limit matches. |
| Switching Frequency | 1 MHz | 1 MHz | 1 MHz | 1 MHz | 1 MHz — Switching frequency matches.; PAM2803AAF095: Switching frequency matches.; STI9287B: Switching frequency matches. |
| Pinout | Confirmed | Unknown | - | - | Unknown — Pinout is not confirmed but likely identical. |
| Feedback Voltage | Unknown | - | 95mV | 202mV | 95mV / 202mV — Different feedback voltage requires redesign of current sense resistor.; STI9287B: Different feedback voltage requires redesign of current sense resistor. |
Application & sourcing insights
Questions & answers
Verified drop-in options for LP3320B6F are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.