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LM62460

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6-A buck converter optimized for power density and low EMI

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Data sheet

LM62460

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package EMI features Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34.2 Iq (typ) (µA) 5 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package EMI features Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34.2 Iq (typ) (µA) 5 Duty cycle (max) (%) 98
VQFN-HR (RPH) 16 15.75 mm² 4.5 x 3.5
  • Functional Safety-Capable
  • Input voltage range from 3 V to 36 V
  • RESET output with filter and delayed release
  • Designed for low EMI:
    • CISPR 11/32 class B compliant EVM
    • Pin-configurable spread spectrum
    • Adjustable SW node rise time
    • Above and below AM band operation: pin configurable at fixed 400 kHz and 2.2 MHz or adjustable from 200 kHz – 2.2 MHz
    • Low EMI symmetrical pinout
    • Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
  • High-efficiency solution
    • 95% efficient for an 8-A load
    • 5-µA input current while unloaded in auto mode
    • <1-µA shutdown current (typical)
  • High power density
    • Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
    • 4.5-mm × 3.5-mm wettable flank QFN package
  • Functional Safety-Capable
  • Input voltage range from 3 V to 36 V
  • RESET output with filter and delayed release
  • Designed for low EMI:
    • CISPR 11/32 class B compliant EVM
    • Pin-configurable spread spectrum
    • Adjustable SW node rise time
    • Above and below AM band operation: pin configurable at fixed 400 kHz and 2.2 MHz or adjustable from 200 kHz – 2.2 MHz
    • Low EMI symmetrical pinout
    • Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
  • High-efficiency solution
    • 95% efficient for an 8-A load
    • 5-µA input current while unloaded in auto mode
    • <1-µA shutdown current (typical)
  • High power density
    • Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
    • 4.5-mm × 3.5-mm wettable flank QFN package

The LM6x4xx family of buck regulators are regulators that provide either fixed or adjustable output voltage that can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range or 3 V to 36 V and have transient tolerance up to 42 V.

The family is designed for low EMI. The devices incorporate pin-selectable spread spectrum and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±5.5% (typical), drastically reducing peak emissions through a combination of triangular and pseudo random modulation. DRSS also includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output with filtering and delayed release gives a true indication of system status. In auto mode, the device automatically transitions between fixed-frequency pulse width modulation (FPWM) and pulse frequency modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.

The LM6x4xx family of buck regulators are regulators that provide either fixed or adjustable output voltage that can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range or 3 V to 36 V and have transient tolerance up to 42 V.

The family is designed for low EMI. The devices incorporate pin-selectable spread spectrum and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±5.5% (typical), drastically reducing peak emissions through a combination of triangular and pseudo random modulation. DRSS also includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output with filtering and delayed release gives a true indication of system status. In auto mode, the device automatically transitions between fixed-frequency pulse width modulation (FPWM) and pulse frequency modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.
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Technical documentation

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Type Title Date
* Data sheet LM62460, LM61480, and LM61495 Pin-Compatible 6-A/8-A/10-A Buck Converter Optimized for Power Density and Low EMI datasheet (Rev. A) PDF | HTML 19 Nov 2021
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 16 Aug 2023
Application note Configuring LM62460 for Dual-Phase Operation PDF | HTML 12 Aug 2021
Functional safety information LM6xxxx Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 24 Mar 2021
Certificate LM62460RPHEVM EU RoHS Declaration of Conformity (DoC) 16 Feb 2021

Design & development

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Simulation model

LM62460 PSpice Transient Model

SNVMC88.ZIP (189 KB) - PSpice Model
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VQFN-HR (RPH) 16 Ultra Librarian
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