LTC3251EMSE-1.5#PBF
Active500MA HIGH EFFICIENCY, LOW NOISE, INDUCTORLESS STEP-DOWN DC/DC CONVERTERS
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LTC3251EMSE-1.5#PBF
Active500MA HIGH EFFICIENCY, LOW NOISE, INDUCTORLESS STEP-DOWN DC/DC CONVERTERS
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3251EMSE-1.5#PBF |
|---|---|
| Current - Output | 500 mA |
| Frequency - Switching [Max] | 1.6 MHz |
| Frequency - Switching [Min] | 1 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | 1.81 mOhm |
| Package / Case | 3 Lead, 0.118 in |
| Package / Case | Exposed Pad, 10-TFSOP, 10-MSOP |
| Supplier Device Package | 10-MSOP-EP |
| Synchronous Rectifier | False |
| Voltage - Input (Max) [Max] | 5.5 V |
| Voltage - Input (Min) [Min] | 2.7 V |
| Voltage - Output (Min/Fixed) | 1.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 5.67 | |
| 10 | $ 3.89 | |||
| 25 | $ 3.43 | |||
| 100 | $ 3.25 | |||
Description
General part information
LTC3251 Series
The LTC3251/LTC3251-1.2/LTC3251-1.5 are 2-phase charge pump step-down DC/DC converters that produce a regulated output from a 2.7V to 5.5V input. The parts use switched capacitor fractional conversion to achieve twice the typical efficiency of a linear regulator. No inductors are required. VOUTis resistor programmable from 0.9V to 1.6V or fixed at 1.2V or 1.5V, with up to 500mA of load current available.A unique 2-phase spread spectrum architecture provides a very low noise regulated output as well as low noise at the input. The parts have four operating modes: Continuous Spread Spectrum, Spread Spectrum with Burst Mode operation, Super Burst™mode operation and shutdown.Low operating current (35µA in Burst Mode operation, 10µA in Super Burst mode operation) and low external parts count make the LTC3251/LTC3251-1.2/LTC3251-1.5 ideally suited for space-constrained battery-powered applications. The parts are short-circuit and over-temperature protected, and are available in a thermally enhanced 10-pin MSOP package.ApplicationsHandheld DevicesCellular PhonesPortable Electronic EquipmentDSP Power Supplies
Documents
Technical documentation and resources