For BusinessPricing
Request a demo

LM5121MHX/NOPB AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM5121MHX/NOPB product

LM5121MHX/NOPB

DC DC Switching Controllers

synchronous boostpeak current modewide inputexternal MOSFET controllerHTSSOP-20programmable UVLOhiccup protection

LM5121MHX/NOPB is a wide-input synchronous boost controller for high-power step-up supplies requiring external MOSFETs, programmable protection, and optional input/load disconnection.

Best for

  • Wide-input synchronous boost converters
  • High-current boost power supplies
  • Systems requiring programmable UVLO and input disconnection

Avoid if

  • A fully integrated power stage is required
  • The design cannot accommodate external MOSFETs and compensation components
  • A converter requiring output voltage above 100 V is needed

Check before use

  • Confirm startup voltage and UVLO divider settings
  • Confirm peak current and current-sense resistor dissipation
  • Validate loop compensation and transient response
  • Verify MOSFET SOA and PCB thermal performance

Key specifications

Input voltage
4.5 V to 65 V
Output capability
Up to 100 V
Switching frequency
Up to 1 MHz
Package
HTSSOP-20 (PWP)

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level-1-260C-UNLIM
ECCN
-
HTSUS
-

Application

Boost power suppliesBattery-powered systemsAutomotive start-stop systemsIndustrial 12 V, 24 V and 48 V systems

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for LM5121MHX/NOPB: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

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

Design and risk insights

Questions & answers

LM5121MHX/NOPB is a Texas Instruments peak-current-mode synchronous boost controller in a 20-pin HTSSOP package. It drives external high-side and low-side N-channel MOSFETs and includes disconnection-switch control.