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LM654B0-Q1

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車用 36Vin、20A 同步降壓轉換器，具高效率與低 EMC 特性

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LM654B0-Q1

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Rating Automotive Topology Buck Iout (max) (A) 20 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 32 Vout (min) (V) 1 Features Adjustable soft start, Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Over Current Protection, Power good, Stackable, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000021 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 20 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 32 Vout (min) (V) 1 Features Adjustable soft start, Adjustable switching frequency, Auto Mode, Automotive load dump, Enable, Fixed Output, Forced PWM, Frequency synchronization, Over Current Protection, Power good, Stackable, Thermal shutdown, UVLO adjustable EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0000021 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
WQFN-FCRLF (VDA) 26 20.25 mm² 4.5 x 4.5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Built in clocking for stacking of converters
  • Internal or external compensation
  • Pin selectable output voltage 3.3V and 5V fixed or adjustable from 0.8V to 0.9 × VIN
  • Wide input voltage range: 3V to 36V
  • ZEN 1 switcher technology
    • Optimized for low EMI requirements
    • Facilitates CISPR 25 Class 5CISPR 11 Class B compliance
    • Enhanced HotRod™ QFN package with symmetrical pinout
  • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
    • Synchronizable with external clock
  • Low minimum on time: 40ns (maximum)
    • Enables 36V to 3.3V conversion at 2.2MHz
  • High-efficiency and high power density
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Built in clocking for stacking of converters
  • Internal or external compensation
  • Pin selectable output voltage 3.3V and 5V fixed or adjustable from 0.8V to 0.9 × VIN
  • Wide input voltage range: 3V to 36V
  • ZEN 1 switcher technology
    • Optimized for low EMI requirements
    • Facilitates CISPR 25 Class 5CISPR 11 Class B compliance
    • Enhanced HotRod™ QFN package with symmetrical pinout
  • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
    • Synchronizable with external clock
  • Low minimum on time: 40ns (maximum)
    • Enables 36V to 3.3V conversion at 2.2MHz
  • High-efficiency and high power density

The LM654B0-Q1 is a buck converter designed for high efficiency, high power density, and low EMI performance with ZEN switcher technology for automotive applications. The converter operates over a wide input voltage range of 3V to 36V with pin selectable fixed output voltages of 3.3V and 5V or an adjustable output.

The low EMI operation is enabled with minimized loop inductance, optimized SW node slew-rate, and dual-random spread spectrum (DRSS). The DRSS significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low.

The current-mode control architecture with 32ns typical minimum on-time allows high conversion ratios at high frequencies, fast transient response, and excellent load and line regulation.

The LM654B0-Q1 is a buck converter designed for high efficiency, high power density, and low EMI performance with ZEN switcher technology for automotive applications. The converter operates over a wide input voltage range of 3V to 36V with pin selectable fixed output voltages of 3.3V and 5V or an adjustable output.

The low EMI operation is enabled with minimized loop inductance, optimized SW node slew-rate, and dual-random spread spectrum (DRSS). The DRSS significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low.

The current-mode control architecture with 32ns typical minimum on-time allows high conversion ratios at high frequencies, fast transient response, and excellent load and line regulation.
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* Data sheet LM654B0-Q1 Pin-Compatible 20A (25A Peak) ZEN 1 Stackable Automotive Buck Converter datasheet PDF | HTML 2025年 11月 3日

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LM654B0EVM-1PH — LM654B0-Q1 評估模組

德州儀器 LM654B0EVM 評估模組 (EVM) 可協助設計師評估 LM654xx 廣泛輸入電壓降壓轉換器系列的運作及性能。LM654xx 系列為易於使用的同步降壓轉換器系列，可從高達 36V 的輸入電壓供應最高 10A、12A、15A 或 20A 的負載電流。
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WQFN-FCRLF (VDA) 26 Ultra Librarian
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