LMR23630-Q1

ACTIVE

Automotive Qualified SIMPLE SWITCHER® 4V to 36V,3A Synchronous Step-Down Converter

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Product details

Parameters

Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 34 Iout (Max) (A) 3 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Soft Start Fixed, Synchronous Rectification, Wettable Flanks Package Control mode Current Mode Duty cycle (Max) (%) 99 Type Converter Operating temperature range (C) -40 to 125 Rating Automotive open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 WSON (DRR) 12 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification:
      • SOIC and WSON With RT — Level C4B
      • WSON With PGOOD — Level C5
  • 4-V to 36-V Input Range
  • 3-A Continuous Output Current
  • Minimum Switch-On Time: 60 ns
  • Internal Compensation for Ease of Use
  • 400 kHz Switching Frequency and Adjustable Switching Frequency Options
  • PFM and Forced PWM Mode Options at Light Load
  • Frequency Synchronization to External Clock
  • 75-µA Quiescent Current at No Load for PFM Option
  • Power-Good Option
  • Soft Start into a Prebiased Load
  • High Duty-Cycle Operation Supported
  • Output Short-Circuit Protection With Hiccup Mode
  • 8-Pin HSOIC and 12-Pin WSON Wettable Flank with PowerPAD™ Package Options
  • Create a Custom Design Using the LMR23630-Q1 With the WEBENCH® Power Designer

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Description

The LMR23630-Q1 SIMPLE SWITCHER® is an easy-to-use 36-V, 3-A synchronous step-down regulator. With a wide input range from 4 V to 36 V, the device is suitable for various applications from industrial to automotive for power conditioning from unregulated sources. Peak-current-mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. A quiescent current of 75 µA makes it suitable for battery powered systems. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components. The device has option for constant frequency FPWM mode to achieve small output voltage ripple at light load. An extended family is available in 1-A (LMR23610-Q1), 1.5-A (LMR23615-Q1), and 2.5-A (LMR23625-Q1) load current options in pin-to-pin compatible package which allows simple, optimum PCB layout. A precision enable input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown due to excessive power dissipation.

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Technical documentation

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Type Title Date
* Datasheet LMR23630-Q1 SIMPLE SWITCHER® 36-V, 3-A Synchronous Step-Down Converter datasheet (Rev. B) Mar. 05, 2018
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guides LMR23630A-Q1 EVM User's Guide Nov. 08, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$29.00
Description
The LMR23630EVM is a fully assembled and tested circuit for evaluating the LMR23630DRR step-down converter. The LMR23630EVM operates from 4V to 36V input (12V nominal) and provides a 5.0V/3.3V output at 3A. The board has jumper connectors to select output options, enable or disable the (...)
Features
  • 4V to 36V Input Voltage Range
  • Jumper Selectable Output Options (5V or 3.3V)
  • Up to 3A Output Current
  • Adjustable Switching Frequency
  • Frequency Synchronization to External Clock

Design tools & simulation

SIMULATION MODELS Download
SNVMAT8.ZIP (7 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAT9.ZIP (899 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAU0.ZIP (912 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAU1.ZIP (7 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBC1.ZIP (7 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBC2.ZIP (223 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBC3.ZIP (220 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBC4.ZIP (7 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBC5.ZIP (224 KB) - PSpice Model
SIMULATION MODELS Download
SNVMBC6.ZIP (7 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options
SON (DRR) 12 View options

Ordering & quality

Support & training

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