Datasheet4U Logo Datasheet4U.com

LM2840Q - 100/300/600 mA Input Step-Down DC/DC Regulator

Download the LM2840Q datasheet PDF. This datasheet also covers the LM2842 variant, as both devices belong to the same 100/300/600 ma input step-down dc/dc regulator family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM2840, LM2841 and LM2842 are PWM DC/DC buck (step-down) regulators.

With a wide input range from 4.5V-42V, they are suitable for a wide range of applications such as power conditioning from unregulated sources.

Key Features

  • include: thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. The LM2840, LM2841 and LM2842 are available in a low profile TSOT-6L package. Features.
  • LM2840Q, LM2841Q and LM2842Q are Automotive Grade products that are AEC-Q100 grade 1 qualified (-40° C to +125°C operating junction temperature).
  • Input voltage range of 4.5V to 42V.
  • Output current options of 100 mA, 300 mA and 600 mA.
  • Feedback pin voltage of 0.765V.
  • 550 kHz (X) or 1.25 MHz (Y).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM2842_NationalSemiconductorCorporation.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM2840 Step-Down DC/DC Regulator Texas Instruments
LM2840-Q1 Step-Down DC/DC Regulator Texas Instruments
LM2841 Step-Down DC/DC Regulator Texas Instruments
LM2841 100/300/600 mA Input Step-Down DC/DC Regulator National Semiconductor Corporation
LM2841-Q1 Step-Down DC/DC Regulator Texas Instruments

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM2840 100/300/600 mA Input Step-Down DC/DC Regulator
LM2841Q 100/300/600 mA Input Step-Down DC/DC Regulator
LM2842Q 100/300/600 mA Input Step-Down DC/DC Regulator
LM2825 Integrated Power Supply 1A DC-DC Converter
LM2826 Low Dropout Regulator with Delayed Reset

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM2840/LM2841/LM2842/LM2840Q/LM2841Q/LM2842Q 100 / 300 / 600 mA Input Step-Down DC/ DC Regulator in Thin SOT-23 LM2840/LM2841/LM2842/ LM2840Q/LM2841Q/ LM2842Q August 23, 2011 100/300/600 mA Input Step-Down DC/DC Regulator in Thin SOT-23 General Description The LM2840, LM2841 and LM2842 are PWM DC/DC buck (step-down) regulators. With a wide input range from 4.5V-42V, they are suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low RDSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 550 kHz (X version) and 1.25 MHz (Y version) allowing the use of small external components while still being able to have low output voltage ripple.