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LINEAR TECHNOLOGY  LT8640EUDC#PBF  DC-DC Switching Buck Step Down Regulator, Adjustable, 3.4V-42Vin, 970mV-41.9Vout, 5Aout, QFN-18

LINEAR TECHNOLOGY LT8640EUDC#PBF
Manufacturer Part No:
LT8640EUDC#PBF
Order Code:
2492735
Technical Datasheet:
See all Technical Docs

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Product Overview

The LT8640EUDC#PBF is an adjustable output, constant frequency, synchronous step down silent switcher in 18 pin QFN package. This monolithic ultralow noise current mode step down regulator has silent switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. The monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with minimal PCB footprint. An ultralow 2.5µA quiescent current with output in full regulation enables applications requiring highest efficiency at very small load currents. Transient response remains excellent and output voltage ripple is below 10mVP-P at any load from zero to full current. Operation is safe in overload even with saturated inductor. The SYNC/MODE pin selects between burst mode operation, spread spectrum mode, synchronization to an external clock and works with pulse skipping mode.
  • Up to 96% efficiency at 1MHz and up to 95% efficiency at 2MHz
  • Wide input voltage range from 3.4V to 42V
  • 5A maximum continuous output and 7A peak transient output
  • Adjustable output voltage range from 970mV to 41.9V
  • Low dropout of 100mV at 1A under all conditions
  • Oscillator frequency of 2MHz at RT=18.2Kohm and ILOAD=1A
  • Adjustable and synchronized from 200KHz to 3MHz
  • Output soft start and tracking
  • Fast minimum switch-on time of 35ns
  • Operating junction temperature range from -40°C to 125°C

Product Information

Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
3.4V
Input Voltage Max:
42V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
QFN
No. of Pins:
18Pins
Output Current:
5A
Output Voltage Min:
970mV
Output Voltage Max:
41.9V
Switching Frequency:
2MHz
Operating Temperature Max:
125°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Power Management
  • Automotive
  • Industrial

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.00027

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