LTC3547EDDB#TRMPBF
ActiveDUAL MONOLITHIC 300MA SYNCHRONOUS STEP-DOWN REGULATOR
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LTC3547EDDB#TRMPBF
ActiveDUAL MONOLITHIC 300MA SYNCHRONOUS STEP-DOWN REGULATOR
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3547EDDB#TRMPBF |
|---|---|
| Current - Output | 300 mA |
| Frequency - Switching | 2.25 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-DFN (3x2) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 5.5 V |
| Voltage - Input (Min) [Min] | 2.5 V |
| Voltage - Output (Max) [Max] | 5.5 V |
| Voltage - Output (Min/Fixed) | 0.6 V |
LTC3547B Series
Dual Monolithic 300mA Synchronous Step-Down Regulator
| Part | Voltage - Input (Min) [Min] | Function | Topology | Voltage - Input (Max) [Max] | Output Type | Package / Case | Voltage - Output (Min/Fixed) | Supplier Device Package | Frequency - Switching | Synchronous Rectifier | Current - Output | Operating Temperature [Max] | Operating Temperature [Min] | Mounting Type | Number of Outputs | Output Configuration | Voltage - Output (Max) [Max] | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 1.81 mOhm | 8-WFDFN Exposed Pad | 1.2 V 1.8 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive | |||
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 1.81 mOhm | 8-WFDFN Exposed Pad | 1.2 V 1.8 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive | |||
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 8-WFDFN Exposed Pad | 0.6 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive | 5.5 V | Adjustable | ||
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 8-WFDFN Exposed Pad | 0.6 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive | 5.5 V | Adjustable | ||
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 8-WFDFN Exposed Pad | 0.6 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive | 5.5 V | Adjustable | ||
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 1.81 mOhm | 8-WFDFN Exposed Pad | 1.2 V 1.8 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive | |||
Analog Devices | 2.5 V | Step-Down | Buck | 5.5 V | 1.81 mOhm | 8-WFDFN Exposed Pad | 1.2 V 1.8 V | 8-DFN (3x2) | 2.25 MHz | 300 mA | 85 °C | -40 °C | Surface Mount | 2 | Positive |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 7.47 | |
| 10 | $ 5.10 | |||
| 25 | $ 4.49 | |||
| 100 | $ 3.80 | |||
| 250 | $ 3.47 | |||
| Digi-Reel® | 1 | $ 7.47 | ||
| 10 | $ 5.10 | |||
| 25 | $ 4.49 | |||
| 100 | $ 3.80 | |||
| 250 | $ 3.47 | |||
| Tape & Reel (TR) | 500 | $ 3.26 | ||
| 1000 | $ 3.10 | |||
| 1500 | $ 3.01 | |||
| 2500 | $ 2.94 | |||
Description
General part information
LTC3547B Series
The LTC3547 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 and USB powered applications. Supply current during operation is only 40µA and drops to < 1µA in shutdown. Automatic Burst Mode®operation increases efficiency at light loads, further extending battery life.An internally set 2.25MHz switching frequency allows the use of tiny surface mount inductors and capacitors. Internal soft-start reduces inrush current during startup. All outputs are internally compensated to work with ceramic capacitors. The LTC3547 is available in a low profile (0.75mm) 3mm × 2mm DFN package.The LTC3547is also available in a fixed output voltage configuration,eliminating the need for the external feedback networksApplicationsCellular TelephonesDigital Still CamerasWireless and DSL ModemsPDAs/Palmtop PCsPortable Media Players
Documents
Technical documentation and resources