LM5164

ACTIVE

6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ

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) 1 Vin (min) (V) 6 Vin (max) (V) 100 Switching frequency (min) (kHz) 75 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Vout (min) (V) 1.2 Vout (max) (V) 90 Iq (typ) (µA) 10 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 6 Vin (max) (V) 100 Switching frequency (min) (kHz) 75 Switching frequency (max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Vout (min) (V) 1.2 Vout (max) (V) 90 Iq (typ) (µA) 10 Duty cycle (max) (%) 99
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 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
    • Meets CISPR 25 class 5 standard
  • Suited for scalable Industrial power supplies and battery packs
    • 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
    • Open-drain power good indicator
    • 8-pin SOIC package with PowerPAD™
  • Create a custom regulator design using WEBENCH power designer
  • 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
    • Meets CISPR 25 class 5 standard
  • Suited for scalable Industrial power supplies and battery packs
    • 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
    • Open-drain power good indicator
    • 8-pin SOIC package with PowerPAD™
  • Create a custom regulator design using WEBENCH power designer

The LM5164 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 LM5164 operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LM5164 delivers up to 1A 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 LM5164 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 LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. The 1.27mm pin pitch provides adequate spacing for high-voltage applications.

The LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. The device 1.27mm pin pitch provides adequate spacing for high-voltage applications.

The LM5164 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 LM5164 operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LM5164 delivers up to 1A 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 LM5164 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 LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. The 1.27mm pin pitch provides adequate spacing for high-voltage applications.

The LM5164 is available in a thermally-enhanced, 8-pin SO PowerPAD™ package. The device 1.27mm pin pitch provides adequate spacing for high-voltage applications.

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Technical documentation

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* Data sheet LM5164 100V Input, 1A Synchronous Buck DC/DC Converter With Ultra-low IQ datasheet (Rev. C) PDF | HTML 23 Apr 2024
Technical article 페달에 전원 공급 전기 자전거 및 전기 스쿠터를 위한 더 오래 지속되 는 13S, 48V 리튬 이온 배터리 팩 구현 (Rev. A) PDF | HTML 22 May 2024
Technical article 為踏板供電:實現適用於電動自行車與電動機車且續航力更長 的 13S、48-v 鋰離子電池組 (Rev. A) PDF | HTML 21 May 2024
Technical article Power to the pedal: Achieving longer-lasting 13S, 48-V lithium-ion battery packs f (Rev. A) PDF | HTML 16 May 2024
Functional safety information LM5164 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 03 Feb 2022
Technical article 3 big benefits of small cells PDF | HTML 26 May 2020
E-book Ein Techniker-Leitfaden für Industrieroboter-Designs 25 Mar 2020
White paper 以工業電池組為運輸替代方案提供電源 17 Mar 2020
White paper 산업용 배터리 팩을 통해 수송 수단에 대체 전력 공급 17 Mar 2020
White paper Powering Alternative Forms of Transportation with Industrial Battery Packs 19 Feb 2020
E-book E-book: An engineer’s guide to industrial robot designs 12 Feb 2020
Technical article Fast and furious: designing longer-lasting 16S-17S Li-ion battery packs for e-moto PDF | HTML 21 Nov 2019
White paper Small Cells, Big Impact: Designing Power Soutions for 5G Applications 26 Jun 2019
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
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 05 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

LM5164-Q1 PSpice Transient Model

SNVMBO8.ZIP (116 KB) - PSpice Model
Simulation model

LM5164-Q1 TINA-TI Spice Transient Model

SNVMBV5.TSC (629 KB) - TINA-TI Spice Model
Simulation model

LM5164-Q1 Unencrypted PSpice Transient Model

SNVMBP2.ZIP (5 KB) - PSpice Model
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
Design tool

DRV3233-Q1-DESIGN DRV3233-Q1-DESIGN documentation

Documentation and tools for DRV3233 design support
Supported products & hardware

Supported products & hardware

Products
ESD protection diodes
TPD4S009 Quad 0.8-pF, 5.5-V, ±8-kV ESD protection diode with VCC pin for High Speed Interfaces
BLDC drivers
DRV3233-Q1 Automotive 12-V and 24-V battery 3-phase gate driver unit with accurate current sensing
AC/DC & DC/DC converters (integrated FET)
LM5164 6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ
Analog temperature sensors
TMP235 1C analog temperature sensor, 10 mV/C
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Schematic: PDF
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This reference design is a low standby and low ship mode current consumption 16S-17S LiFePO4 Li-ion battery pack design for telecom battery backup and emotorcycles. It was implemented for a 2-layer PCB. The 9S-15S AFE bq76940 monitors the lower 15 cells voltage and a two-channel general purpose (...)
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Schematic: PDF
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TIDA-010070 — Protected DC-bus input power and control power supply reference design for low-voltage servo drives

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Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HSOIC (DDA) 8 Ultra Librarian

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