LTC3899IFE#TRPBF
Active60V LOW IQ, TRIPLE OUTPUT, BUCK/BUCK/BOOST SYNCHRONOUS CONTROLLER WITH PASSTHRU
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LTC3899IFE#TRPBF
Active60V LOW IQ, TRIPLE OUTPUT, BUCK/BUCK/BOOST SYNCHRONOUS CONTROLLER WITH PASSTHRU
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3899IFE#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Enable, Frequency Control, Tracking, Soft Start |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 535 kHz, 835 kHz |
| Frequency - Switching [Min] | 350 kHz, 105 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 3 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 2 |
| Output Type | Transistor Driver |
| Package / Case | 38-TFSOP |
| Supplier Device Package | 38-TSSOP-EP |
| Synchronous Rectifier | True |
| Topology | Buck-Boost, Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 60 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2000 | $ 8.40 | |
Description
General part information
LTC3899 Series
The LTC3899 is a high performance triple output (buck/ buck/boost) DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages. The constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. The LTC3899 operates from a wide 4.5V to 60V input supply range. When biased from the output of the boost converter or another auxiliary supply, the LTC3899 can operate from an input supply as low as 2.2V after start-up.The gate drive for the LTC3899 can be programmed from 5V to 10V to allow the use of logic-level or standard-level FETs and to maximize efficiency. Internal switches in the top gate drivers eliminate the need for external bootstrap diodes. The 29μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP®compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values.APPLICATIONSAutomotive Always-On and Start-Stop SystemsDistributed DC Power SystemsMultioutput Buck-Boost Applications