Product details

Vin (Min) (V) 6 Vin (Max) (V) 100 Vout (Min) (V) 1.2 Vout (Max) (V) 90 Iout (Max) (A) 1 Iq (Typ) (uA) 10 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 Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 6 Vin (Max) (V) 100 Vout (Min) (V) 1.2 Vout (Max) (V) 90 Iout (Max) (A) 1 Iq (Typ) (uA) 10 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 Operating temperature range (C) -40 to 150 Rating Catalog Regulated outputs (#) 1
HSOIC (DDA) 8 19 mm² 4.9 x 3.9
  • Designed for reliable and rugged applications
    • Wide input voltage range of 6 V to 100 V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3-ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Suited for scalable Industrial power supplies and battery packs
    • Low minimum on- and off-times of 50 ns
    • Adjustable switching frequency up to 1 MHz
    • Diode emulation for high light-load efficiency
    • 10.5-µA no-load input quiescent current
    • 3-µA shutdown quiescent current
    • Optimized for CISPR 32 EMI standard
  • Integration reduces solution size and cost
    • COT mode control architecture
    • Integrated 0.725-Ω NFET buck switch supports wide duty-cycle range
    • Integrated 0.34-Ω NFET synchronous rectifier eliminates external Schottky diode
    • 1.2-V 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 design using WEBENCH® power designer
  • Designed for reliable and rugged applications
    • Wide input voltage range of 6 V to 100 V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3-ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Suited for scalable Industrial power supplies and battery packs
    • Low minimum on- and off-times of 50 ns
    • Adjustable switching frequency up to 1 MHz
    • Diode emulation for high light-load efficiency
    • 10.5-µA no-load input quiescent current
    • 3-µA shutdown quiescent current
    • Optimized for CISPR 32 EMI standard
  • Integration reduces solution size and cost
    • COT mode control architecture
    • Integrated 0.725-Ω NFET buck switch supports wide duty-cycle range
    • Integrated 0.34-Ω NFET synchronous rectifier eliminates external Schottky diode
    • 1.2-V 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 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 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5164 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it 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 1-A 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. Its 1.27-mm 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 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5164 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it 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 1-A 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. Its 1.27-mm pin pitch provides adequate spacing for high-voltage applications.

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Technical documentation

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Type Title Date
* Data sheet LM5164 100-V Input, 1-A synchronous buck DC/DC converter with ultra-low IQ datasheet (Rev. A) 16 Jan 2019
Technical article 3 big benefits of small cells 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-motorcycles 21 Nov 2019
White paper Small Cells, Big Impact: Designing Power Soutions for 5G Applications 26 Jun 2019
User guide LM5164Q1-EVM User Guide (Rev. A) 04 Apr 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note Stability Analysis and Design of COT Type-3 Ripple Circuit 20 Mar 2019
Technical article Power to the pedal: Achieving longer-lasting 13S, 48-V lithium-ion battery packs for e-bikes and e-scooters 07 Mar 2019
Application note DC/DC Buck Converters With Ultra-Low IQ for Industrial Battery-Pack Applications 20 Feb 2019
Application note IC Package Features Lead to Higher Reliability in Automotive Systems 20 Feb 2019
Application note 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.
In stock
Limit: 2
Simulation model

LM5164-Q1 PSpice Transient Model

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

LM5164-Q1 Unencrypted PSpice Transient Model

SNVMBP2.ZIP (5 KB) - PSpice Model
Simulation model

LM5164-Q1 TINA-TI Spice Transient Model

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

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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 (...)
Reference designs

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This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over (...)
Reference designs

TIDA-010070 — Protected DC-bus input power and control power supply reference design for low-voltage servo drives

This reference design uses an ORing controller, the LM5050-1 to provide protection against reverse polarity and reverse current. In conjunction, the LM5069 hot swap controller is used for overcurrent, over voltage, under voltage protection, and inrush current limitation. The design also features (...)
Reference designs

TIDA-010074 — 16S-17S Battery pack reference design with low current consumption

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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SO PowerPAD (DDA) 8 View options

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