LTC7818IUJ#TRPBF
Active40V, LOW IQ, 3MHZ, TRIPLE OUTPUT BUCK/BUCK/BOOST SYNCHRONOUS CONTROLLER
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LTC7818IUJ#TRPBF
Active40V, LOW IQ, 3MHZ, TRIPLE OUTPUT BUCK/BUCK/BOOST SYNCHRONOUS CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC7818IUJ#TRPBF |
|---|---|
| Clock Sync | False |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 3 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Down, Step-Up |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Synchronous Rectifier | True |
| Topology | Boost, Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 40 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
LTC7818 Series
40V, Low IQ, 3MHz, Triple Output Buck/Buck/Boost Synchronous Controller
| Part | Synchronous Rectifier | Output Type | Frequency - Switching [Max] | Frequency - Switching [Min] | Function | Operating Temperature [Max] | Operating Temperature [Min] | Topology | Number of Outputs | Clock Sync | Output Phases | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Output Configuration | Mounting Type | Duty Cycle (Max) [Max] | Package / Case | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | Transistor Driver | 3 MHz | 100 kHz | Step-Down Step-Up | 125 °C | -40 °C | Boost Buck | 1 | 1 | 40 V | 4.5 V | Positive | ||||||
Analog Devices | Transistor Driver | 3 MHz | 100 kHz | Step-Up/Step-Down | 125 ¯C | -40 °C | Buck-Boost | 1 | 1 | 40 V | 4.5 V | Positive | Surface Mount | 100 % | 40-WFQFN Exposed Pad | 40-QFN (6x6) | ||
Analog Devices | Transistor Driver | 3 MHz | 100 kHz | Step-Down Step-Up | 125 ¯C | -40 °C | Boost Buck | 1 | 1 | 40 V | 4.5 V | Positive | 100 % | |||||
Analog Devices | Transistor Driver | 3 MHz | 100 kHz | Step-Down Step-Up | 125 ¯C | -40 °C | Boost Buck | 1 | 1 | 40 V | 4.5 V | Positive | 100 % | |||||
Analog Devices | Transistor Driver | 3 MHz | 100 kHz | Step-Down Step-Up | Boost Buck | 1 | 1 | 40 V | 4.5 V | Positive |
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 | $ 6.41 | |
Description
General part information
LTC7818 Series
The LTC7818 is a high performance triple output (buck/buck/boost) synchronous DC/DC switching regulator controller that drives all N-channel power MOSFET stages. Its constant-frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. The LTC7818 operates from a wide 4.5V to 40V input supply range. When biased from the output of the boost converter or another auxiliary supply, the LTC7818 can operate from an input supply as low as 1V after start-up.The LTC7818 synchronous boost PassThru capability minimizes losses in automotive start-stop applications. The very low 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. The LTC7818 features a precision 0.8V reference for the bucks, 1.2V reference for the boost and a power good output indicator.The LTC7818 additionally features spread spectrum operation which significantly reduces the peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards.APPLICATIONSAutomotive and TransportationIndustrialMilitary/Avionics