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LM60440-Q1

ACTIVE

Automotive 36-V, 4-A synchronous converter in an enhanced EMI QFN package with wettable flank

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Data sheet

LM60440-Q1

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 4 Vin (min) (V) 3.8 Vin (max) (V) 36 Type Converter Switching frequency (min) (kHz) 340 Switching frequency (max) (kHz) 460
Iout (max) (A) 4 Vin (min) (V) 3.8 Vin (max) (V) 36 Type Converter Switching frequency (min) (kHz) 340 Switching frequency (max) (kHz) 460
WQFN-FCRLF (RPK) 13 6 mm² 3 x 2
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Low EMI and switching noise
    • Meets CISPR25 class 5 standard
    • Enhanced QFN package minimizes parasitic inductance and switch node ringing
  • Configured for automotive applications
    • Standard QFN footprint: single large thermal pad and all pins accessible from perimeter
    • Pin compatible variants:
    • Junction temperature range –40°C to +150°C
    • ±1.5% total output regulation accuracy
    • Frequency: 400 kHz
    • Output voltage range: 1 V to 24 V
  • High efficiency power conversion at all loads
    • Peak efficiency > 95%
    • 90% PFM efficiency at 10-mA, 12 VIN, 5 VOUT
    • Low operating quiescent current of 25 µA
  • Create a custom design using the LM60440-Q1 with the WEBENCH® Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Low EMI and switching noise
    • Meets CISPR25 class 5 standard
    • Enhanced QFN package minimizes parasitic inductance and switch node ringing
  • Configured for automotive applications
    • Standard QFN footprint: single large thermal pad and all pins accessible from perimeter
    • Pin compatible variants:
    • Junction temperature range –40°C to +150°C
    • ±1.5% total output regulation accuracy
    • Frequency: 400 kHz
    • Output voltage range: 1 V to 24 V
  • High efficiency power conversion at all loads
    • Peak efficiency > 95%
    • 90% PFM efficiency at 10-mA, 12 VIN, 5 VOUT
    • Low operating quiescent current of 25 µA
  • Create a custom design using the LM60440-Q1 with the WEBENCH® Power Designer

The LM604x0-Q1 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for automotive applications. The LM60430-Q1 drives up to 3-A of load current, and the LM60440-Q1 is industry’s smallest 4A step-down converter.

The LM604x0-Q1 is available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pin-out with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch node ringing and dramatically reducing EMI.

The LM604x0-Q1 uses peak-current-mode control to automatically fold back frequency at light load to ensure exceptional efficiency across the entire load range. The low power dissipation paired with a thermally optimized QFN package enables a power dense solution size. In addition the device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LM604x0-Q1 are designed to simplify implementation for a wide range of end equipment.

The LM604x0-Q1 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for automotive applications. The LM60430-Q1 drives up to 3-A of load current, and the LM60440-Q1 is industry’s smallest 4A step-down converter.

The LM604x0-Q1 is available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pin-out with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch node ringing and dramatically reducing EMI.

The LM604x0-Q1 uses peak-current-mode control to automatically fold back frequency at light load to ensure exceptional efficiency across the entire load range. The low power dissipation paired with a thermally optimized QFN package enables a power dense solution size. In addition the device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LM604x0-Q1 are designed to simplify implementation for a wide range of end equipment.
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Technical documentation

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Type Title Date
* Data sheet LM604x0-Q1 3.8-V to 36-V, 3-A, and 4-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. A) PDF | HTML 17 Jun 2020
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML 28 Nov 2023
Application note Enhanced HotRod QFN Package: Industry-Best Size with Low EMI (Rev. A) PDF | HTML 17 Aug 2021
White paper 透過節省時間和成本的創新技術 降低電源中的EMI 04 Dec 2020
White paper 전원 공급 장치의 EMI 절감을 위한 시간 및 비용 효율적 혁신 04 Dec 2020
Functional safety information LM604x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 01 Oct 2020
Certificate LM60440AQEVM EU Declaration of Conformity (DoC) 08 Sep 2020
EVM User's guide LM60440AQEVM User's Guide 08 Oct 2019

Design & development

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

Evaluation board

LM60440AQEVM — 36-V, 4-A, 2x3-mm synchronous step-down converter evaluation module

The LM60440AQEVM evaluation module (EVM) helps designers evaluate the operation and performance of the LM60440-Q1 wide-input buck regulator. The LM60440-Q1 is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 4 A of load current from an input voltage of up to 36 V. The (...)
User guide: PDF
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Simulation model

LM60440A-Q1 PSpice Unencrypted Transient Model

SNVMBY4.ZIP (158 KB) - PSpice Model
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Calculation tool

SNVR483 — LM60440-Q1 Quick Start Calculator

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
LM60440 — 36-V, 4-A synchronous converter in an enhanced EMI QFN package with wettable flank and external pad LM60440-Q1 — Automotive 36-V, 4-A synchronous converter in an enhanced EMI QFN package with wettable flank
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Package Pins Download
WQFN-FCRLF (RPK) 13 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

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