IC reference design search
IC manufacturers Texas Instruments

IC manufacturers (104)

reference designLMQ61460

Texas Instruments LMQ61460

LMQ61460 3-V to 36-V, 6 A, Low EMI Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage3-36 V
Switching frequency200-2200 kHz
Output 134.2 V / 6 A
IC revisionC

Description

The LMQ61460 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output. The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency. Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

Features

  • Functional Safety-Capable–Documentation available to aid functional safety system design
  • Optimized for ultra-low EMI requirements–Hotrod™ package minimizes switch node ringing–Internal bypass capacitors reduce EMI–Parallel input path minimizes parasitic inductance–Spread spectrum reduces peak emissions–Adjustable switch node rise time
  • Designed for rugged applications–Supports 42-V transient–0.4-V dropout with 4-A load (typical)
  • High efficiency power conversion at all loads–7-µA no load current at 13.5 VIN, 3.3 VOUT–90% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT–Low MOSFET ON resistance
  • RDS_ON_HS = 41 mΩ (typical)
  • RDS_ON_LS = 21 mΩ (typical)
  • External bias option for improved efficiency
  • Pin compatible with:–LM61460 (36 V, 6 A)

Typical applications

  • Industrial robot: CPU board, Industrial PC: single board computer, Test and measurement instrumentation
  • USB type-C, General purpose wide-VIN step down applications

More information

Products

Log in now to view availability and request availability forecasts. LOGIN
Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
ISAT,10%(A)
RDC(mΩ)
Material
Qty.
RDC max.(mΩ)
SamplesAvailability & Sample
Log in now to view availability and request availability forecasts. LOGIN
74438356010
SPECWE-MAPI SMT Power Inductor, 1 µH, 10.1 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current10.1 A
Saturation Current @ 30%11.5 A
DC Resistance12 mΩ
Self Resonant Frequency55 MHz
Operating Voltage80 V
MountSMT 
Saturation Current @ 10%5.3 A
–
–
Packaging Unit1000 
DC Resistance15 mΩ
–Check availability
74438356015HT
SPECWE-MAPI SMT Power Inductor, 1.5 µH, 7.45 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1.5 µH
Performance Rated Current7.45 A
Saturation Current @ 30%9 A
DC Resistance18 mΩ
Self Resonant Frequency40 MHz
Operating Voltage80 V
MountSMT 
Saturation Current @ 10%4.2 A
–
–
–
DC Resistance20.7 mΩ
–Check availability
744316220
SPECWE-HCI SMT Flat Wire High Current Inductor, 2.2 µH, 9.2 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance2.2 µH
Performance Rated Current9.2 A
Saturation Current @ 30%7.5 A
–
Self Resonant Frequency108 MHz
–
MountSMT 
Saturation Current @ 10%3.5 A
DC Resistance11.3 mΩ
MaterialSuperflux 
Packaging Unit1500 
DC Resistance12.43 mΩ
–Check availability
74439346047
SPECWE-XHMI SMT Power Inductor, 4.7 µH, 9.6 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-XHMI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current9.6 A
Saturation Current @ 30%13 A
DC Resistance13 mΩ
Self Resonant Frequency28 MHz
Operating Voltage120 V
MountSMT 
Saturation Current @ 10%6.5 A
DC Resistance13 mΩ
–
Packaging Unit700 
DC Resistance14.3 mΩ
–Check availability