LTC3548IDD#TRPBF
ActiveDUAL SYNCHRONOUS, 400MA/800MA, 2.25MHZ STEP-DOWN DC/DC REGULATOR
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LTC3548IDD#TRPBF
ActiveDUAL SYNCHRONOUS, 400MA/800MA, 2.25MHZ STEP-DOWN DC/DC REGULATOR
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3548IDD#TRPBF |
|---|---|
| Current - Output | 800 mA, 400 mA |
| Frequency - Switching | 2.25 MHz |
| Function | Step-Up/Step-Down, 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 | 10-WFDFN Exposed Pad |
| Supplier Device Package | 10-DFN (3x3) |
| Synchronous Rectifier | True |
| Topology | Buck-Boost, Buck |
| Voltage - Input (Max) [Max] | 5.5 V |
| Voltage - Input (Min) [Min] | 2.5 V |
| Voltage - Output (Max) | 5 V |
| Voltage - Output (Min/Fixed) | 0.6 V |
LTC3548-2 Series
Dual Synchronous, Fixed/Adjustable Output, 2.25MHz Step-Down DC/DC Regulator
| Part | Output Configuration | Frequency - Switching | Current - Output | Package / Case | Topology | Operating Temperature [Max] | Operating Temperature [Min] | Function | Voltage - Output (Min/Fixed) | Output Type | Voltage - Input (Max) [Max] | Supplier Device Package | Voltage - Input (Min) [Min] | Synchronous Rectifier | Voltage - Output (Max) | Number of Outputs | Mounting Type | Voltage - Output (Min/Fixed) | Voltage - Output (Max) [Max] | Package / Case | Voltage - Output (Min/Fixed) [Min] | Voltage - Output (Min/Fixed) [Max] | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-WFDFN Exposed Pad | Buck Buck-Boost | 85 °C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-DFN (3x3) | 2.5 V | 5 V | 2 | Surface Mount | |||||||
Analog Devices | Positive | 2.25 MHz | 1.2 A 700 mA | 10-WFDFN Exposed Pad | Buck Buck-Boost | 85 °C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable (Fixed) | 5.5 V | 10-DFN (3x3) | 2.5 V | 2 | Surface Mount | 1.8 V | 5.5 V | ||||||
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-WFDFN Exposed Pad | Buck Buck-Boost | 125 ¯C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-DFN (3x3) | 2.5 V | 5 V | 2 | Surface Mount | |||||||
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-MSOP 10-TFSOP Exposed Pad | Buck Buck-Boost | 85 °C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-MSOP-EP | 2.5 V | 5 V | 2 | Surface Mount | 0.118 in 3 Lead | ||||||
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-WFDFN Exposed Pad | Buck Buck-Boost | 125 ¯C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-DFN (3x3) | 2.5 V | 5 V | 2 | Surface Mount | |||||||
Analog Devices | Positive | 2.25 MHz | 1.2 A 700 mA | 10-WFDFN Exposed Pad | Buck | 85 °C | -40 °C | Step-Down | 5.5 V | 10-DFN (3x3) | 2.5 V | 2 | Surface Mount | 1.575 V | 1.8 V | 1.81 mOhm | |||||||
Analog Devices | Positive | 2.25 MHz | 1.2 A 700 mA | 10-UFDFN Exposed Pad | Buck | 85 °C | -40 °C | Step-Down | 5.5 V | 10-UTDFN (3x3) | 2.5 V | 2 | Surface Mount | 1.575 V | 1.8 V | 1.81 mOhm | |||||||
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-WFDFN Exposed Pad | Buck Buck-Boost | 125 ¯C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-DFN (3x3) | 2.5 V | 5 V | 2 | Surface Mount | |||||||
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-MSOP 10-TFSOP Exposed Pad | Buck Buck-Boost | 85 °C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-MSOP-EP | 2.5 V | 5 V | 2 | Surface Mount | 0.118 in 3 Lead | ||||||
Analog Devices | Positive | 2.25 MHz | 400 mA 800 mA | 10-WFDFN Exposed Pad | Buck Buck-Boost | 85 °C | -40 °C | Step-Down Step-Up/Step-Down | 0.6 V | Adjustable | 5.5 V | 10-DFN (3x3) | 2.5 V | 5 V | 2 | Surface Mount |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 4.50 | |
Description
General part information
LTC3548-2 Series
The LTC3548-2 is a dual, constant frequency, synchronous step down DC/DC converter. Intended for low power applications, it operates from 2.5V to 5.5V input voltage range and has a constant 2.25MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors with a profile ≤1.2mm. For channel 1, the output voltage is fixed at 1.8V/800mA; for channel 2, the output voltage is adjustable from 0.6V to VIN. Internal synchronous 0.35Ω, 1.2A/0.7A power switches provide high efficiency without the need for external Schottky diodes.A user selectable mode input is provided to allow the user to trade-off noise ripple for low power efficiency. Burst Mode®operation provides high efficiency at light loads, while Pulse-Skip Mode provides low noise ripple at light loads.To further maximize battery run time, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle), and both channels draw a total quiescent current of only 40μA. In shutdown, the device draws <1μA.FeaturesLTC3548AImproved Burst Mode, Improved ESD, 2 Adjustable OutputsLTC3548-2One Fixed 1.8V Output, 1 AdjustableLTC3548-1Fixed 1.8V and 1.575V OutputsLTC35482 Adjustable OutputsApplicationsPDAs/Palmtop PCsDigital CamerasCellular PhonesPortable Media PlayersPC CardsWireless and DSL Modems
Documents
Technical documentation and resources