LTC3548AEMSE#PBF
ActiveDUAL SYNCHRONOUS 400MA/800MA, 2.25MHZ STEP-DOWN DC/DC REGULATOR
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LTC3548AEMSE#PBF
ActiveDUAL SYNCHRONOUS 400MA/800MA, 2.25MHZ STEP-DOWN DC/DC REGULATOR
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3548AEMSE#PBF |
|---|---|
| Current - Output | 400 mA, 800 mA |
| Frequency - Switching | 2.25 MHz |
| Function | Step-Down, Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 10-MSOP, 10-TFSOP, Exposed Pad |
| Supplier Device Package | 10-MSOP-EP |
| Synchronous Rectifier | True |
| Topology | Buck-Boost, Buck |
| Voltage - Input (Max) [Max] | 5.5 V |
| Voltage - Input (Min) [Min] | 2.5 V |
| Voltage - Output (Max) [Max] | 5 V |
| Voltage - Output (Min/Fixed) | 0.6 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 10 | $ 7.47 | 1m+ |
Description
General part information
LTC3548A Series
The LTC3548A is a dual, constant frequency, synchronous step-down DC/DC converter. Intended for low power applications, it operates from a 2.5V to 5.5V input voltage range and has a constant 2.25MHz switching frequency, enabling the use of tiny, low cost capacitors and inductors 1mm or less in height. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35Ω, 0.7A/1.2A 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 ripple noise for low power efficiency. Burst Mode®operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest ripple noise at light loads.To further maximize battery life, 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 PhonesWireless and DSL Modems
Documents
Technical documentation and resources