LTC3789IGN#TRPBF
ActiveHIGH EFFICIENCY, SYNCHRONOUS, 4-SWITCH BUCK-BOOST CONTROLLER
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LTC3789IGN#TRPBF
ActiveHIGH EFFICIENCY, SYNCHRONOUS, 4-SWITCH BUCK-BOOST CONTROLLER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3789IGN#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Current Limit, Power Good, Soft Start, Frequency Control, Enable |
| Duty Cycle (Max) [Max] | 90 % |
| Frequency - Switching [Max] | 640 kHz |
| Frequency - Switching [Min] | 200 kHz |
| Function | 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 Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 28-SSOP |
| Supplier Device Package | 28-SSOP |
| Synchronous Rectifier | True |
| Topology | Buck-Boost |
| 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 | Cut Tape (CT) | 1 | $ 16.22 | |
| 10 | $ 11.63 | |||
| 25 | $ 10.45 | |||
| 100 | $ 9.13 | |||
| 250 | $ 8.50 | |||
| 500 | $ 8.11 | |||
| 1000 | $ 8.03 | |||
| Digi-Reel® | 1 | $ 16.22 | ||
| 10 | $ 11.63 | |||
| 25 | $ 10.45 | |||
| 100 | $ 9.13 | |||
| 250 | $ 8.50 | |||
| 500 | $ 8.11 | |||
| 1000 | $ 8.03 | |||
| Tape & Reel (TR) | 2500 | $ 8.03 | ||
Description
General part information
LTC3789 Series
The LTC3789 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant-frequency, current mode architecture allows a phase-lockable frequency of up to 600kHz, while an output current feedback loop provides support for battery charging. With a wide 4V to 38V (40V maximum) input and output range and seamless, low noise transitions between operating regions, the LTC3789 is ideal for automotive, telecom and battery-powered systems.The operating mode of the controller is determined through the MODE/PLLIN pin. The MODE/PLLIN pin can select between pulse-skipping mode and forced continuous mode operation and allows the IC to be synchronized to an external clock. Pulse-skipping mode offers high efficiency and low ripple at light loads, while forced continuous mode operates at a constant frequency for noise-sensitive applications.A PGOOD pin indicates when the output is within 10% of its designed set point. The LTC3789 is available in low profile 28-pin 4mm × 5mm QFN and narrow SSOP packages.ApplicationsAutomotive SystemsDistributed DC Power SystemsHigh Power Battery-Operated DevicesIndustrial Control
Documents
Technical documentation and resources