LTC3852IUDD#TRPBF
ActiveLOW INPUT VOLTAGE, SYNCHRONOUS STEP-DOWN DC/DC CONTROLLER
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LTC3852IUDD#TRPBF
ActiveLOW INPUT VOLTAGE, SYNCHRONOUS STEP-DOWN DC/DC CONTROLLER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3852IUDD#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Soft Start, Power Good, Frequency Control, Enable, Tracking |
| Duty Cycle (Max) [Max] | 99 % |
| Frequency - Switching [Max] | 750 kHz |
| Frequency - Switching [Min] | 235 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 24-WFQFN Exposed Pad |
| Supplier Device Package | 24-QFN (3x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 38 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4 V |
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 | $ 3.48 | |
Description
General part information
LTC3852 Series
The LTC3852 is a constant frequency, current mode step-down DC/DC controller which can be powered by an on-board charge pump. Input supplies as low as 2.7V, when doubled by the charge pump, provide 5V to the LTC3852’s control logic and gate drives, supporting a wide selection of logic-level N-channel power MOSFETs.The constant-frequency current mode architecture allows for a phase-lockable fixed frequency of up to 750kHz. The RUN pin provides a precision enable threshold while the TRACK/SS pin combines tracking and adjustable soft-start features.The MODE/PLLIN pin selects among Burst Mode®operation, pulse-skipping mode, and continuous current mode. Current foldback limits MOSFET power dissipation during short-circuit conditions. Reverse current and current foldback functions are disabled during soft-start. A power good output pin indicates when the output is within ±10% of its designed set point.ApplicationsGeneral Purpose 3.3V SystemsLithium-Ion Powered DevicesDistributed DC Power Systems
Documents
Technical documentation and resources