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OC5121 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

OC5121 product

OC5121

PMIC - LED Drivers

buck LED driverconstant current140 kHzSOT23-6

OC5121 is a 140 kHz buck LED constant-current controller for 8 V to 150 V input systems, using an external NMOS and RCS to set LED current.

Best for

  • High-power LED constant-current buck circuits
  • Automotive and portable LED lighting

Avoid if

  • A fully integrated LED driver is required
  • The application requires documented compliance or lifecycle data not provided here

Check before use

  • Input and LED voltage range
  • RCS current setting
  • Inductor and MOSFET peak-current ratings
  • Thermal performance and CS/GND layout

Key specifications

Input voltage
8 V to 150 V
Switching frequency
140 kHz typical
CS threshold
200 mV typical
Package
SOT23-6

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

High-power LED lightingAutomotive LED lampsPortable and motorcycle lights

Datasheet

43455cd493566b2d29fdb101700ca0b9_OC5121.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for OC5121: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

OC5121 is a fixed-frequency buck controller for high-power LED constant-current applications. It operates at a typical 140 kHz switching frequency and drives an external NMOS.