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ADI LTC3646HDE#PBF product image
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ADI LTC3646HDE#PBFRoHS

Manufacturer
ADI
MPN
LTC3646HDE#PBF
LCSC Part #
C685641
Packaging
DFN-14-EP(3x4)
Customer #
Key Attributes
40V, 1A Synchronous Step-Down Converter
Datasheetpdf iconADI LTC3646HDE#PBF
In-Stock: 5
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QtyUnit PriceTotal Amount
1+$ 11.2984$ 11.30
10+$ 10.9354$ 109.35
Standard Packaging91/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingDFN-14-EP(3x4)
Operating Temperature-40℃~+150℃@(TJ)
Frequency - Switching200kHz~3MHz
FunctionStep-down type
Number of Outputs1
FeaturesFrequency synchronization;Light load efficient mode;External compensation;Built-in LDO regulator;Overcurrent Protection;Operating status indication
Output TypeAdjustable
TopologyBuck
Operating Voltage4V~40V
Switch tube (built-in/external)Built-in
Output Voltage2V~30V
Output Current1A
Quiescent Current140uA
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Introduction

AI Translation

The LTC3646 is a high efficiency, step-down DC/DC converter with internal high side and synchronous power FETs. It draws only 140μA typical DC supply current in Burst Mode operation at no load while maintaining output voltage regulation. The LTC3646 can supply up to a 1A load, and its combination of Burst Mode operation, integrated power switches and low quiescent current provides high efficiency over a broad range of load currents. Alternatively, it can be used in forced continuous mode for ripple sensitive applications. The LTC3646 has a wide 4.0V to 40V input range and its patented controlled on-time architecture and 0.6V reference voltage allow for large step-down ratios without the risk of output overvoltage. The frequency may be set between 200kHz and 3.0MHz with a program resistor or synchronized to an external clock. The internal soft-start, short-circuit protection and voltage rating make the LTC3646 a robust part ideal for high voltage applications.

Features

AI Translation
  • Wide Input Voltage Range: 4.0V to 40V
  • 1A Guaranteed Output Current
  • High Efficiency: Up to 95%
  • Wide Output Voltage Range
  • LTC3646: 2.0V to 30V
  • LTC3646-1: 0.6V to 15V
  • ±1% Accurate Reference Voltage
  • Internal or External Compensation
  • Switching Frequency Adjustable and Synchronizable: 200kHz to 3MHz
  • Selectable High Efficiency Burst Mode Operation or Forced Continuous Mode
  • 14 Lead 3mm × 4mm DFN or Thermally Enhanced 16-Lead MSOP Packages

Applications

AI Translation
  • Point of Load Power Supplies
  • Intermediate Bus Power
  • Automotive Applications