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LMR70410

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LMR70410

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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, Fixed soft start, 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, 0.000006 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, Fixed soft start, 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, 0.000006 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)
  • Configured for rugged industrial applications
    • 4V to 40V input voltage range
    • 1A continuous output current
    • 60ns minimum on-time
    • 1.1MHz 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
    • TPS560430, LMR50410, LMR51410, LMR54410
  • Configured for rugged industrial applications
    • 4V to 40V input voltage range
    • 1A continuous output current
    • 60ns minimum on-time
    • 1.1MHz 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
    • TPS560430, LMR50410, LMR51410, LMR54410

LMR70410 is a 40V, 1A synchronous buck switching regulator in an easy to use SOT23-6 package. LMR70410 can deliver up to 1A DC load current in a small design size and can operate between 4V to 40V DC supply voltage. LMR70410 operates at a fixed 1.1MHz switching frequency to support the use of relatively small inductors to optimize overall design size.

LMR70410 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 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 if the junction temperature exceeds the thermal shutdown threshold.

LMR70410 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 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 and LMR50410.

LMR70410 is a 40V, 1A synchronous buck switching regulator in an easy to use SOT23-6 package. LMR70410 can deliver up to 1A DC load current in a small design size and can operate between 4V to 40V DC supply voltage. LMR70410 operates at a fixed 1.1MHz switching frequency to support the use of relatively small inductors to optimize overall design size.

LMR70410 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 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 if the junction temperature exceeds the thermal shutdown threshold.

LMR70410 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 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 and LMR50410.
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* 資料表 LMR70410 4V to 40V, 1A Synchronous Buck Converter datasheet PDF | HTML 2026/10/9

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LMR70410QEVM — LMR70410-Q1 評估模組

LMR70410-Q1 評估模組 (EVM) 提供工作電路圖和平台，可評估 LMR704XX-Q1 系列裝置性能。EVM 可在 5.5V 至 40 V 的寬輸入電壓範圍內運作，提供穩壓 5V 輸出。此 EVM 設計旨在處理高達 1A 的負載。
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