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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM5166

現行

具有超低 Iq 的 3V-65V 輸入、500mA 同步降壓轉換器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
LMR36506 現行 具有 4μA IQ 的 3V 至 65V、0.6A 超小型同步降壓轉換器 Smaller footprint, lower IQ and lower EMI.
TPSM365R6 現行 3-V 至 65-V 輸入、1-V 至 13-V 輸出、0.6-A 同步降壓轉換器電源模組 Smaller design with an integrated-inductor power module.

LM5166

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 600 Features Adjustable current limit, 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) 1.23 Vout (max) (V) 65 Iq (typ) (µA) 10 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 600 Features Adjustable current limit, 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) 1.23 Vout (max) (V) 65 Iq (typ) (µA) 10 Duty cycle (max) (%) 100
VSON (DRC) 10 9 mm² 3 x 3
  • Wide Input Voltage Range of 3 V to 65 V
  • 9.7-µA No-Load Quiescent Current
  • –40°C to 150°C Junction Temperature Range
  • Fixed (3.3-V, 5-V) or Adjustable VOUT Options
  • Meets EN55022 / CISPR 22 EMI Standards
  • Integrated 1-Ω PFET Buck Switch
    • Supports 100% Duty Cycle for Low Dropout
  • Integrated 0.5-Ω NFET Synchronous Rectifier
    • Eliminates External Schottky Diode
  • Programmable Peak Current Limit Supports:
    • 500-mA, 300-mA, or 200-mA Loads
  • Selectable PFM or COT Mode Operation
  • 1.223-V ±1.2% Internal Voltage Reference
  • Switching Frequency up to 600 kHz
  • 900-µs Internal or Externally-Adjustable Soft Start
  • Diode Emulation and Pulse Skipping for Ultra-High Light-Load Efficiency
  • No Loop Compensation or Bootstrap Components
  • Precision Enable and Input UVLO With Hysteresis
  • Open-Drain Power Good Indicator
  • Thermal Shutdown Protection With Hysteresis
  • Pin-to-Pin Compatible With the LM5165
  • 10-Pin, 3-mm × 3-mm VSON Package
  • Create a Custom Regulator Design Using WEBENCH® Power Designer
  • Wide Input Voltage Range of 3 V to 65 V
  • 9.7-µA No-Load Quiescent Current
  • –40°C to 150°C Junction Temperature Range
  • Fixed (3.3-V, 5-V) or Adjustable VOUT Options
  • Meets EN55022 / CISPR 22 EMI Standards
  • Integrated 1-Ω PFET Buck Switch
    • Supports 100% Duty Cycle for Low Dropout
  • Integrated 0.5-Ω NFET Synchronous Rectifier
    • Eliminates External Schottky Diode
  • Programmable Peak Current Limit Supports:
    • 500-mA, 300-mA, or 200-mA Loads
  • Selectable PFM or COT Mode Operation
  • 1.223-V ±1.2% Internal Voltage Reference
  • Switching Frequency up to 600 kHz
  • 900-µs Internal or Externally-Adjustable Soft Start
  • Diode Emulation and Pulse Skipping for Ultra-High Light-Load Efficiency
  • No Loop Compensation or Bootstrap Components
  • Precision Enable and Input UVLO With Hysteresis
  • Open-Drain Power Good Indicator
  • Thermal Shutdown Protection With Hysteresis
  • Pin-to-Pin Compatible With the LM5165
  • 10-Pin, 3-mm × 3-mm VSON Package
  • Create a Custom Regulator Design Using WEBENCH® Power Designer

The LM5166 is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 500 mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V, or an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse frequency modulation (PFM) mode is selected for optimal light-load efficiency or constant on-time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.

The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular load current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5166 is available in a 10-pin VSON package with 0.5-mm pin pitch.

The LM5166 is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 500 mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V, or an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse frequency modulation (PFM) mode is selected for optimal light-load efficiency or constant on-time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.

The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular load current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5166 is available in a 10-pin VSON package with 0.5-mm pin pitch.
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類型 標題 日期
* Data sheet LM5166 3-V to 65-V Input, 500-mA Synchronous Buck Converter With Ultra-Low IQ datasheet (Rev. B) PDF | HTML 2017年 6月 1日
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021年 7月 26日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019年 4月 10日
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 2019年 2月 5日
Application note Selecting an Ideal Ripple Generation Network for Your COT Buck Converter (Rev. A) 2017年 6月 15日
Technical article The power to innovate industrial design PDF | HTML 2017年 3月 27日
EVM User's guide LM5166EVM-C50A Evaluation Module 2016年 12月 8日
EVM User's guide LM5166EVM-C33A Evaluation Module 2016年 12月 7日
Technical article Trends in building automation: predictive maintenance PDF | HTML 2016年 11月 1日
Analog Design Journal Low-EMI buck powers a multivariable sensor transmitter with BLE connectivity 2016年 10月 24日
Technical article Powering smart sensor transmitters in industrial applications PDF | HTML 2016年 5月 2日
Technical article DC/DC converter datasheets - Quiescent current demystified: Part two PDF | HTML 2016年 4月 11日
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014年 1月 22日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM5166EVM-C33A — LM5166 寬輸入電壓、低 IQ、COT 3.3V 500mA 評估模組

The LM5166EVM-C33A evaluation module (EVM) is designed to showcase the performance and all features of the LM5166, wide-VIN, synchronous buck DC/DC buck converter with ultra-low no-load supply current. The design is packaged in a miniature footprint with low component count. It operates over a (...)
使用指南: PDF
TI.com 無法提供
開發板

LM5166EVM-C50A — LM5166 寬輸入電壓、低 IQ、COT 5V 500mA 評估模組

The LM5166EVM evaluation module (EVM) is designed to showcase the performance and all features of the LM5166, wide-VIN, synchronous buck DC/DC buck converter with ultra-low no-load supply current. The design is packaged in a miniature footprint with low component count. It operates over a wide (...)
使用指南: PDF
TI.com 無法提供
模擬型號

LM5166 PSpice Transient Model (Rev. B)

SNVMAV8B.ZIP (104 KB) - PSpice Model
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模擬型號

LM5166 Unencrypted PSpice Transient Model (Rev. B)

SNVMAV7B.ZIP (5 KB) - PSpice Model
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模擬型號

LM5166X PSpice Transient Model (Rev. B)

SNVMAZ3B.ZIP (130 KB) - PSpice Model
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模擬型號

LM5166X Unencrypted PSpice Transient Model (Rev. B)

SNVMAZ2B.ZIP (5 KB) - PSpice Model
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模擬型號

LM5166Y PSpice Transient Model (Rev. B)

SNVMAZ1B.ZIP (124 KB) - PSpice Model
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模擬型號

LM5166Y Unencrypted PSpice Transient Model (Rev. B)

SNVMAZ0B.ZIP (5 KB) - PSpice Model
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計算工具

LM5166DESIGN-CALC — LM5166 DC/DC 轉換器設計工具

Welcome to the LM5166 Quick-Start Design Tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck converter based on the LM5166 low IQ synchronous buck DC/DC regulator. As such, the user can expeditiously arrive at an optimized design to meet the (...)
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參考設計

TIDA-01395 — 適用於智慧空調、具有寬輸入電壓轉換器和電池電量計的 24V AC 功率級參考設計

This reference design provides a low BOM count, high-efficiency power stage for smart thermostats and other gateway building automation designs. This power stage takes a 24-V AC input and produces a 5-V and 3.3-V output rail, which can power additional point-of-load converters if added. The (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01437 — 具有 IO-Link 介面的 RGB 訊號燈參考設計

This reference design implements a five-segment LED smart stack light with 20 LEDs used in factory floor and industrial process automation of greater complexity. An IO-Link interface is implemented for controlling the stack light and reading back status information. The design features low power (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01487 — 隔離式 CAN 靈活資料 (FD) 速率中繼器參考設計

CAN and CANopen are legacy Fieldbus protocols used in many applications in factory automation. Whenever high voltage can damage the end equipment, there is need for isolation. This isolated CAN flexible data (FD) rate repeater reference design adds electrical isolation between two CAN (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01386 — 具有 IO-Link 的超音波距離感測器參考設計

This reference design features an ultrasonic distance sensor that fits in a M12 housing due to its high integration and an optimized layout. The design offers an IO-Link interface to communicate with the system control, which makes it industry 4.0 ready.  The purpose of ultrasonic (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010055 — 非隔離電源架構，具有用於保護繼電器模組的診斷參考設計

This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010049 — 適用於 IEC 61508 的 TUV 評估數位輸入參考設計 (SIL-2)

This 8-channel, group-isolated, digital input module reference design, focuses on applications with the need for industrial functional safety. This design has diagnostics implemented to help detect both permanent and transient random hardware faults. The concept of this input module has been (...)
Design guide: PDF
電路圖: PDF
參考設計

TIPD215 — 具有自適型電源管理、功耗低於 1W 的四通道類比輸出模組參考設計

This quad-channel, analog output module delivers voltage and current outputs using the highly integrated DAC8775 digital-to-analog converter (DAC). Integrated adaptive power management, along with the LM5166 buck converter, reduces the total power dissipation of the reference design to less than 1 (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01358 — 適用於智慧空調、具有寬輸入電壓轉換器和備用電池的 24V AC 功率級參考設計

The TIDA-01358 reference design provides a low BOM cost, high efficiency power stage solution for smart thermostats and other gateway building automation end equipment. This power stage takes a 24Vac input and produces a 5V and 3.3V output rail which can power additional point-of-load converters (...)
Design guide: PDF
電路圖: PDF
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