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ANALOG DEVICES LTC3446EDE#PBF

Power Management IC, 2 LDO, 3 Outputs, 1 Buck Converter, 5.5 V, -40 to 125 °C, DFN-EP-14

ANALOG DEVICES LTC3446EDE#PBF
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Manufacturer Part No:
LTC3446EDE#PBF
Order Code:
4030823
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Technical Datasheet:
LTC3446EDE#PBF   Datasheet
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Product Overview

LTC3446 is a synchronous buck DC/DC converter with two very low dropout (VLDO) linear regulators to provide upto three stepped-down output voltages from a single input voltage. The 1A synchronous buck converter provides the main output with high efficiency, typically 85%. The two 300mA VLDO regulators can run off the main output to provide two additional lower voltage outputs. A built-in supply monitor provides a power good indication. The buck converter switches at 2.25MHz, allowing the use of small surface mount inductors and capacitors. Constant frequency current mode operation produces controlled output spectrum and fast transient response. A mode select pin allows automatic Burst Mode operation to be enabled for higher efficiency at light load, or disabled for lower noise operation down to very light loads. It is used in application such as low power handheld devices, low voltage and multivoltage power for digital, logic, I/O, FPGAs, CPLDs, ASICs and CPUs etc.
  • High efficiency triple step-down outputs from a single input supply
  • Output voltages as low as 400mV (VLDO outputs)
  • Power good output, input voltage range is 2.7V to 5.5V
  • Defeatable automatic Burst Mode® operation for high efficiency at light loads
  • ±1.5% reference accuracy, overtemperature protection
  • VIN quiescent current is 140µA typical at (VBUCKFB = 1V, ISW = 0mA, VLVIN = 1.5V)
  • Shutdown current is 1µA maximum at (VENBUCK = 0V, VENLDO1 = 0V, VENLDO2 = 0V)
  • Operating temperature is -40°C to 125°C
  • Package style is 14-lead plastic DFN

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5.5V

:
1

:
2

:
3

:
DFN-EP

:
14Pins

:
-40°C

:
125°C

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Multicomp Pro Driver Bit

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Technical Documents (1)

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