Home Power management AC/DC & DC/DC converters (integrated FET)
Home
Power management
AC/DC & DC/DC converters (integrated FET)

LM5163-Q1

ACTIVE

Automotive 6-V to 100-V input, 0.5-A synchronous buck DC/DC converter with ultra-low IQ

Order now
Data sheet

LM5163-Q1

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 0.5 Vin (min) (V) 6 Vin (max) (V) 100 Topology Buck Type Converter Switching frequency (min) (kHz) 75 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT) Vout (min) (V) 1.2 Vout (max) (V) 90 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000105
Iout (max) (A) 0.5 Vin (min) (V) 6 Vin (max) (V) 100 Topology Buck Type Converter Switching frequency (min) (kHz) 75 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT) Vout (min) (V) 1.2 Vout (max) (V) 90 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000105
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C, ambient temperature range
  • Designed for reliable and rugged applications
    • Wide input voltage range of 6V to 100V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Optimized for ultra-low EMI requirements
  • Suited for scalable automotive power supplies
    • Low minimum on- and off-times of 50ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • 10.5µA no-load input quiescent current
    • 3µA shutdown quiescent current
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 0.725Ω NFET buck switch
    • Integrated 0.34Ω NFET synchronous rectifier eliminates external Schottky diode
    • 1.2V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
  • Create a custom regulator design using WEBENCH power designer
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C, ambient temperature range
  • Designed for reliable and rugged applications
    • Wide input voltage range of 6V to 100V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Optimized for ultra-low EMI requirements
  • Suited for scalable automotive power supplies
    • Low minimum on- and off-times of 50ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • 10.5µA no-load input quiescent current
    • 3µA shutdown quiescent current
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 0.725Ω NFET buck switch
    • Integrated 0.34Ω NFET synchronous rectifier eliminates external Schottky diode
    • 1.2V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
  • Create a custom regulator design using WEBENCH power designer

The LM5163-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on-time of 50ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5163-Q1 operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for high-performance 48V battery automotive applications and MHEV/EV systems.

With integrated high-side and low-side power MOSFETs, the LM5163-Q1 delivers up to 0.5A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. Additional features of the LM5163-Q1 include ultra-low IQ and diode emulation mode operation for high light-load efficiency, innovative peak and valley overcurrent protection, integrated VCC bias supply and bootstrap diode, precision enable and input UVLO, and thermal shutdown protection with automatic recovery. An open-drain PGOOD indicator provides sequencing, fault reporting, and output voltage monitoring.

The LM5163-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in a 8-pin SO PowerPAD™ package. The device 1.27mm pin pitch provides adequate spacing for high-voltage applications.

The LM5163-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on-time of 50ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5163-Q1 operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for high-performance 48V battery automotive applications and MHEV/EV systems.

With integrated high-side and low-side power MOSFETs, the LM5163-Q1 delivers up to 0.5A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. Additional features of the LM5163-Q1 include ultra-low IQ and diode emulation mode operation for high light-load efficiency, innovative peak and valley overcurrent protection, integrated VCC bias supply and bootstrap diode, precision enable and input UVLO, and thermal shutdown protection with automatic recovery. An open-drain PGOOD indicator provides sequencing, fault reporting, and output voltage monitoring.

The LM5163-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in a 8-pin SO PowerPAD™ package. The device 1.27mm pin pitch provides adequate spacing for high-voltage applications.
open-in-new Find other AC/DC & DC/DC converters (integrated FET)
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
LM5163H-Q1 ACTIVE Automotive 6V-100-V input, 0.5-A synchronous high-temperature buck DC/DC converter with ultra-low IQ Identical device with extended high temperature operation.
Pin-for-pin with same functionality to the compared device
LM5168-Q1 ACTIVE Automotive 6-V to 120-V Wide VIN, 300-mA DC-DC converter with Fly-Buck™ capability Pin-to-pin compatable device with 120-VIN, 300-mA and fly-buck capability.
LM5169-Q1 ACTIVE Automotive 6-V to 120-V Wide VIN, 650-mA DC-DC converter with Fly-Buck™ capability Pin-to-pin compatible device with wider 120-VIN, 300-mA and fly-buck capability.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 7
Type Title Date
* Data sheet LM5163-Q1 100V Input, 0.5A Synchronous Buck DC/DC Converter With Ultra-low IQ datasheet (Rev. A) PDF | HTML 23 Apr 2024
Technical article MHEVs: Optimizing the automotive powertrain for efficiency and cost PDF | HTML 24 May 2021
Functional safety information LM5163-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 08 Jan 2021
EVM User's guide LM5164Q1-EVM User Guide (Rev. A) 04 Apr 2019
Application note Stability Analysis and Design of COT Type-3 Ripple Circuit 20 Mar 2019
Application note DC/DC Buck Converters With Ultra-Low IQ for Industrial Battery-Pack Applications 20 Feb 2019
Application brief IC Package Features Lead to Higher Reliability in Automotive Systems 20 Feb 2019

Design & development

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

Evaluation board

LM5164-Q1EVM — Synchronous step-down converter evaluation module

The LM5164-Q1 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM5164-Q1, 300-kHz synchronous step-down converter.  The LM5164-Q1EVM operates at very low quiescent current and delivers exceptional efficiency with minimum number of external components.
User guide: PDF
Not available on TI.com
Simulation model

LM5163-Q1 PSPICE TRANS MODEL

SNVMBS8.ZIP (21 KB) - PSpice Model
Download
Simulation model

LM5163-Q1 TINA-TI Transient Model

SNVMBV2.TSC (631 KB) - TINA-TI Reference Design
Download
Calculation tool

LM5163-LM5164DESIGN-CALC — LM5163 and LM5164 converter quickstart design tool

Welcome to the LM5163 and LM5164 Quickstart Design Tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck converter based on the LM5163 and LM5164 low IQ synchronous buck DC/DC regulator. As such, the user can expeditiously arrive at an optimized (...)
User guide: PDF
Download
Package Pins Download
HSOIC (DDA) 8 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos