LM284x PWM DC-DC Buck Regulators

Texas Instruments' 100/300/600 mA, 42 V input, step-down DC/DC regulator

LM284x PWM DC/DC Buck RegulatorsTexas Instruments' LM2840, LM2841, and LM2842 are PWM DC/DC buck (step-down) regulators. With a wide input range from 4.5 V to 42 V, they are suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low RDSON (0.9 Ω 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. Soft-start can be implemented using the shutdown pin with an external RC circuit. This allows the user to tailor the soft-start time to a specific application.

Features
  • Input voltage range of 4.5 V to 42 V
  • Output current options of 100 mA, 300 mA and 600 mA
  • Feedback pin voltage of 0.765 V
  • 550 kHz (X) or 1.25 MHz (Y) switching frequency
  • Low shutdown IQ, 16 µA typical
  • Short circuit protected
  • Internally compensated
  • Soft-start circuitry
  • Small overall solution size (SOT-6L package)

Buck Regulators LM2840 Series

图片制造商零件编号描述可供货数量价格
IC REG BUCK ADJ 100MA TSOT23-6LM2840XMK-ADJL/NOPBIC REG BUCK ADJ 100MA TSOT23-6831 - 立即发货$28.91查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840XMKX-ADJL/NOPBIC REG BUCK ADJ 100MA TSOT23-60 - 立即发货$21.64查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840XQMK/NOPBIC REG BUCK ADJ 100MA TSOT23-6517 - 立即发货$28.49查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840XQMKX/NOPBIC REG BUCK ADJ 100MA TSOT23-60 - 立即发货$12.11查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840YMK-ADJL/NOPBIC REG BUCK ADJ 100MA TSOT23-6919 - 立即发货$24.55查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840YMKX-ADJL/NOPBIC REG BUCK ADJ 100MA TSOT23-60 - 立即发货$11.08查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840YQMK/NOPBIC REG BUCK ADJ 100MA TSOT23-6491 - 立即发货$32.76查看详情
IC REG BUCK ADJ 100MA TSOT23-6LM2840YQMKX/NOPBIC REG BUCK ADJ 100MA TSOT23-60 - 立即发货$25.15查看详情

Buck Regulators LM2841 Series

图片制造商零件编号描述可供货数量价格
IC REG BUCK ADJ 300MA SOT23LM2841XMKX-ADJL/NOPBIC REG BUCK ADJ 300MA SOT232630 - 立即发货$29.19查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841XMK-ADJL/NOPBIC REG BUCK ADJ 300MA TSOT23-62556 - 立即发货$31.74查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841XQMK/NOPBIC REG BUCK ADJ 300MA TSOT23-61336 - 立即发货$33.92查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841XQMKX/NOPBIC REG BUCK ADJ 300MA TSOT23-60 - 立即发货$13.66查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841YMK-ADJL/NOPBIC REG BUCK ADJ 300MA TSOT23-61132 - 立即发货$34.38查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841YMKX-ADJL/NOPBIC REG BUCK ADJ 300MA TSOT23-62012 - 立即发货$26.95查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841YQMK/NOPBIC REG BUCK ADJ 300MA TSOT23-65282 - 立即发货$36.02查看详情
IC REG BUCK ADJ 300MA TSOT23-6LM2841YQMKX/NOPBIC REG BUCK ADJ 300MA TSOT23-65039 - 立即发货$31.31查看详情

Buck Regulators LM2842 Series

图片制造商零件编号描述可供货数量价格
IC REG BUCK ADJ 600MA TSOT23-6LM2842XQMK/NOPBIC REG BUCK ADJ 600MA TSOT23-61130 - 立即发货$35.59查看详情
IC REG BUCK ADJ 600MA TSOT23-6LM2842YQMK/NOPBIC REG BUCK ADJ 600MA TSOT23-62634 - 立即发货$35.59查看详情
IC REG BUCK ADJ 600MA SOT23LM2842XQMKX/NOPBIC REG BUCK ADJ 600MA SOT231240 - 立即发货$30.97查看详情
IC REG BUCK ADJ 600MA TSOT23-6LM2842XMK-ADJL/NOPBIC REG BUCK ADJ 600MA TSOT23-63988 - 立即发货$31.40查看详情
IC REG BUCK ADJ 600MA TSOT23-6LM2842XMKX-ADJL/NOPBIC REG BUCK ADJ 600MA TSOT23-61956 - 立即发货$26.69查看详情
IC REG BUCK ADJ 600MA TSOT23-6LM2842YMK-ADJL/NOPBIC REG BUCK ADJ 600MA TSOT23-62209 - 立即发货$34.01查看详情
IC REG BUCK ADJ 600MA TSOT23-6LM2842YMKX-ADJL/NOPBIC REG BUCK ADJ 600MA TSOT23-67288 - 立即发货$26.69查看详情
IC REG BUCK ADJ 600MA SOT23LM2842YQMKX/NOPBIC REG BUCK ADJ 600MA SOT230 - 立即发货$30.97查看详情

Evaluation Boards

图片制造商零件编号描述可供货数量价格
EVAL BOARD FOR LM2841LM2841YMK-ADJEV/NOPBEVAL BOARD FOR LM28412 - 立即发货$528.18查看详情
EVAL BOARD FOR LM2842LM2842XMK-ADJEV/NOPBEVAL BOARD FOR LM28421 - 立即发货$528.18查看详情
发布日期: 2013-04-10