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LM2840-Q1 数据表(PDF) 1 Page - Texas Instruments |
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LM2840-Q1 数据表(HTML) 1 Page - Texas Instruments |
1 / 20 page FB GND SW CB SHDN LM2840/1/2-ADJL VOUT VIN L1 D1 R1 R2 VIN CBOOT CIN COUT LM2841, LM2842 www.ti.com SNVS540H – MARCH 2009 – REVISED APRIL 2013 LM2840/LM2841/LM2842/ LM2840-Q1/LM2841-Q1/LM2842-Q1 100/300/600 mA 42V Input Step-Down DC/DC Regulator in Thin SOT Check for Samples: LM2841, LM2842 1 FEATURES DESCRIPTION The LM2840, LM2841 and LM2842 are PWM DC/DC 2 • LM2840Q, LM2841-Q1 and LM2842-Q1 are buck (step-down) regulators. With a wide input range Automotive Grade Products that are AEC-Q100 from 4.5V-42V, they are suitable for a wide range of Grade 1 Qualified (-40°C to +125°C Operating applications such as power conditioning from Junction Temperature) unregulated sources. They feature a low RDSON (0.9Ω • Input Voltage Range of 4.5V to 42V typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 550 kHz (X • Output Current Options of 100 mA, 300 mA version) and 1.25 MHz (Y version) allowing the use of and 600 mA small external components while still being able to • Feedback Pin Voltage of 0.765V have low output voltage ripple. Soft-start can be • 550 kHz (X) or 1.25 MHz (Y) Switching implemented using the shutdown pin with an external Frequency RC circuit allowing the user to tailor the soft-start time to a specific application. • Low Shutdown IQ, 16 µA Typical The LM2840 is optimized for up to 100 mA, the • Short Circuit Protected LM2841 for 300 mA and the LM2842 is optimized for • Internally Compensated up to 600 mA load currents. They all have a 0.765V • Soft-Start Circuitry nominal feedback voltage. • Small Overall Solution Size (SOT-6L Package) Additional features include: thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage APPLICATIONS lockout. The LM2840, LM2841 and LM2842 are available in a low profile SOT-6L package. • Battery Powered Equipment • Industrial Distributed Power Applications • Portable Media Players • Portable Hand Held Instruments Typical Application Circuit 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2009–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
类似零件编号 - LM2840-Q1 |
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类似说明 - LM2840-Q1 |
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