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LMR70410-Q1

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LMR70410-Q1

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제품 상세 정보

Rating Catalog Topology Buck Iout (max) (A) 1 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 28 Vout (min) (V) 0.8 Features Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Pre-bias startup, Synchronous rectification, UVLO fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000005 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
Rating Catalog Topology Buck Iout (max) (A) 1 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 28 Vout (min) (V) 0.8 Features Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Pre-bias startup, Synchronous rectification, UVLO fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000005 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
SOT-23-THN (DDC) 6 8.12 mm² (2.9 mm × 2.8 mm)
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40ºC to 125ºC ambient operating temperature range
  • Configured for rugged automotive applications
    • 4V to 40V input voltage range
    • 1A continuous output current
    • 60ns minimum on-time
    • 2.1MHz fixed switching frequency
    • –40ºC to 150ºC junction temperature range
    • Cycle-by-cycle short-circuit protection
    • Precision enable
    • ±1% voltage reference accuracy
    • 1.8ms internal soft start
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT23-6 package
  • Forced pulse width modulation (FPWM) and pulse frequency modulation (PFM) modes available
  • Pin-to-pin compatibility with existing SOT23-6 devices
    • LMR50410-Q1, TPS560430-Q1
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40ºC to 125ºC ambient operating temperature range
  • Configured for rugged automotive applications
    • 4V to 40V input voltage range
    • 1A continuous output current
    • 60ns minimum on-time
    • 2.1MHz fixed switching frequency
    • –40ºC to 150ºC junction temperature range
    • Cycle-by-cycle short-circuit protection
    • Precision enable
    • ±1% voltage reference accuracy
    • 1.8ms internal soft start
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT23-6 package
  • Forced pulse width modulation (FPWM) and pulse frequency modulation (PFM) modes available
  • Pin-to-pin compatibility with existing SOT23-6 devices
    • LMR50410-Q1, TPS560430-Q1

LMR70410-Q1 is a 40V, 1A synchronous buck switching regulator in an easy to use SOT23-6 package. LMR70410-Q1 can deliver up to 1A DC load current in a small design size and can operate between 4V to 40V DC supply voltage. LMR70410-Q1 operates at a fixed 2.1MHz switching frequency to support the use of relatively small inductors to optimize overall design size.

LMR70410-Q1 features precision enable UVLO which allows the designer to program the input voltage at which the device is turned on or off through the use of a resistor divider between VIN and GND. LMR70410-Q1 implements cycle-by-cycle overcurrent protection which limits the maximum output current even as the output voltage falls to zero. Thermal shutdown is implemented to turn off the LMR70410-Q1 if the junction temperature exceeds the thermal shutdown threshold.

LMR70410-Q1 features both FPWM and PFM variants allowing designs to be optimized for either fixed frequency across load or higher light load efficiency. The internal soft-start time is set internally to be 1.8ms (typical).

LMR70410-Q1 is part of a family of pin-to-pin devices that support load currents ranging from 0.6A to 1A. This family is pin-to-pin compatible with other SOT23-6 devices, such as TPS560430-Q1 and LMR50410-Q1.

LMR70410-Q1 is a 40V, 1A synchronous buck switching regulator in an easy to use SOT23-6 package. LMR70410-Q1 can deliver up to 1A DC load current in a small design size and can operate between 4V to 40V DC supply voltage. LMR70410-Q1 operates at a fixed 2.1MHz switching frequency to support the use of relatively small inductors to optimize overall design size.

LMR70410-Q1 features precision enable UVLO which allows the designer to program the input voltage at which the device is turned on or off through the use of a resistor divider between VIN and GND. LMR70410-Q1 implements cycle-by-cycle overcurrent protection which limits the maximum output current even as the output voltage falls to zero. Thermal shutdown is implemented to turn off the LMR70410-Q1 if the junction temperature exceeds the thermal shutdown threshold.

LMR70410-Q1 features both FPWM and PFM variants allowing designs to be optimized for either fixed frequency across load or higher light load efficiency. The internal soft-start time is set internally to be 1.8ms (typical).

LMR70410-Q1 is part of a family of pin-to-pin devices that support load currents ranging from 0.6A to 1A. This family is pin-to-pin compatible with other SOT23-6 devices, such as TPS560430-Q1 and LMR50410-Q1.
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* 데이터 시트 LMR70410-Q1 4V to 40V, 1A Automotive Synchronous Buck Converter datasheet PDF | HTML 2026. 10. 9

설계 및 개발

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평가 보드

LMR70410QEVM — LMR70410-Q1 평가 모듈

LMR70410-Q1 평가 모듈(EVM)은 LMR704XX-Q1 장치 제품군의 성능을 평가할 수 있는 작동 회로도 및 플랫폼을 제공합니다. EVM은 5.5V~40V의 넓은 입력 전압 범위에서 작동하여 정전압 5V 출력을 제공합니다. 이 EVM은 최대 1A 부하를 처리하도록 설계되었습니다.
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