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LMR51450-Q1

現行

具有低 Iq 的車用、36V 5A 同步降壓轉換器

立即訂購
產品規格表

LMR51450-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1100 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 38 Iq (typ) (µA) 25 Duty cycle (max) (%) 96
Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1100 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 38 Iq (typ) (µA) 25 Duty cycle (max) (%) 96
WSON (DRR) 12 9 mm² 3 x 3
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements:
    • Wide input voltage range: 4V to 36V
    • 4A or 5A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1MHz
    • Frequency spread spectrum
    • Protection features:
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • PFM and FPWM options in pin-to-pin compatible package
  • Create a custom design using the LMR514x0-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements:
    • Wide input voltage range: 4V to 36V
    • 4A or 5A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1MHz
    • Frequency spread spectrum
    • Protection features:
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • PFM and FPWM options in pin-to-pin compatible package
  • Create a custom design using the LMR514x0-Q1 with the WEBENCH Power Designer

The LMR514x0-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (FPWM version) to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0-Q1 is available in a WSON-12 package.

The LMR514x0-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (FPWM version) to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0-Q1 is available in a WSON-12 package.
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類型 標題 日期
* Data sheet LMR514x0-Q1 36V, 4A / 5A , Automotive, Synchronous Buck Converter With Low IQ datasheet PDF | HTML 2024年 8月 20日
Functional safety information LMR51440-Q1 and LMR51450-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2024年 8月 13日

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開發板

LMR51450EVM — LMR51450 同步降壓轉換器評估模組

LMR51450 評估模組 (EVM) 的設計旨在協助客戶評估 LMR51450 同步降壓電壓轉換器的性能。此 EVM 以 12 針腳 WSON 封裝實作 LMR51450。EVM 能夠在非常小的解決方案尺寸中以高效率和輸出準確度來提供 5 V 或 3.3 V 輸出電壓，和高達 5 A 負載電流。
使用指南: PDF | HTML
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模擬型號

LMR51450 PSpice Transient Model

SNVMCB2.ZIP (2175 KB) - PSpice Model
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WSON (DRR) 12 Ultra Librarian
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