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ADI LTC3547BEDDB#TRPBF product image
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ADI LTC3547BEDDB#TRPBF

Manufacturer
ADI
MPN
LTC3547BEDDB#TRPBF
LCSC Part #
C684970
Packaging
DFN-8(2x3)
Customer #
Key Attributes
1.8MHz~2.7MHz Step-down type Adjustable and Fixed 300mA DFN-8(2x3) Voltage Regulators - DC DC Switching Regulators RoHS
Datasheetpdf iconADI LTC3547BEDDB#TRPBF
RoHS Compliance1 documents available
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QtyUnit Price(Reference Only)Total Amount
1+$ 2.3908$ 2.39
10+$ 2.0284$ 20.28
30+$ 1.8016$ 54.05
100+$ 1.5687$ 156.87
500+$ 1.4638$ 731.90
1,000+$ 1.4191$ 1419.10
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingDFN-8(2x3)
Operating Temperature-40℃~+85℃
Frequency - Switching1.8MHz~2.7MHz
Number of Outputs2
FunctionStep-down type
FeaturesOvercurrent Protection
Output TypeAdjustable and Fixed
TopologyBuck
Operating Voltage2.5V~5.5V
Switch tube (built-in/external)Built-in
Output Voltage600mV~5.5V;1.2V;1.8V
Output Current300mA
Quiescent Current4.5mA
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Introduction

AI Translation

The LTC3547B is a dual, 2.25MHz, constant-frequency, synchronous step-down DC/DC converter in a tiny 3mm × 2mm DFN package. 100% duty cycle provides low dropout operation, extending battery life in portable systems. Low output voltages are supported with the 0.6V feedback reference voltage. Each regulator can supply 300mA continuous output current. The input voltage range is 2.5V to 5.5V, making it ideal for Li-Ion polymer and USB powered applications. Supply current is only 1μA in shutdown. An internally set 2.25MHz switching frequency allows the use of tiny surface mount inductors and capacitors. Internal soft-start reduces inrush current during start-up. All outputs are internally compensated to work with ceramic capacitors. The LTC3547B is available in a low profile (0.75mm) 3mm × 2mm DFN package.

Features

AI Translation
  • High Efficiency (Up to 96%) Dual Step-Down Outputs
  • 300mA Output Current per Channel at VIN = 3V
  • 2.25MHz Constant-Frequency Operation
  • 2.5V to 5.5V Input Voltage Range
  • Low Dropout Operation: 100% Duty Cycle
  • No Schottky Diodes Required
  • Internally Compensated for All Ceramic Capacitors
  • Independent Internal Soft-Start for Each Channel
  • Available in Fixed Output Versions
  • Current Mode Operation for Excellent Line and Load Transient Response
  • 0.6V Reference Allows Low Output Voltages
  • Short-Circuit Protected
  • Ultralow Shutdown Current: IQ < 1μA
  • Low Profile (0.75mm) 8-Lead 3mm × 2mm DFN Package

Applications

AI Translation
  • Cellular Telephones
  • Digital Still Cameras
  • Wireless and DSL Modems
  • Portable Media Players
  • PDAs/Palmtop PCs