LTC7871HLWE#PBF
ActiveSIX-PHASE, SYNCHRONOUS BIDIRECTIONAL BUCK OR BOOST CONTROLLER
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LTC7871HLWE#PBF
ActiveSIX-PHASE, SYNCHRONOUS BIDIRECTIONAL BUCK OR BOOST CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC7871HLWE#PBF |
|---|---|
| Clock Sync | True |
| Control Features | Enable, Power Good, Soft Start |
| Duty Cycle (Max) [Max] | 98 % |
| Frequency - Switching [Max] | 750 kHz |
| Frequency - Switching [Min] | 60 kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 6 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 6 |
| Output Type | Transistor Driver |
| Package / Case | 64-LQFP Exposed Pad |
| Serial Interfaces | SPI |
| Supplier Device Package | 64-LQFP-EP (10x10) |
| Synchronous Rectifier | True |
| Topology | Buck-Boost |
| Voltage - Supply (Vcc/Vdd) [Max] | 100 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 6 V |
LTC7871 Series
Six-Phase, Synchronous Bidirectional Buck or Boost Controller
| Part | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Output Phases | Clock Sync | Package / Case | Duty Cycle (Max) [Max] | Mounting Type | Output Configuration | Serial Interfaces | Number of Outputs | Supplier Device Package | Synchronous Rectifier | Control Features | Topology | Frequency - Switching [Max] | Frequency - Switching [Min] | Function | Operating Temperature [Max] | Operating Temperature [Min] | Output Type | Current - Output | Voltage - Input [Max] | Voltage - Input [Min] | Board Type | Utilized IC / Part | Supplied Contents | Main Purpose | Regulator Topology | Outputs and Type | Outputs and Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | 100 V | 6 V | 6 | 64-LQFP Exposed Pad | 98 % | Surface Mount | Positive | SPI | 6 | 64-LQFP-EP (10x10) | Enable Power Good Soft Start | Buck-Boost | 750 kHz | 60 kHz | Step-Up/Step-Down | 150 °C | -40 °C | Transistor Driver | ||||||||||||
Analog Devices | 100 V | 6 V | 6 | 64-LQFP Exposed Pad | 98 % | Surface Mount | Positive | SPI | 6 | 64-LQFP-EP (10x10) | Enable Power Good Soft Start | Buck-Boost | 750 kHz | 60 kHz | Step-Up/Step-Down | 125 ¯C | -40 °C | Transistor Driver | ||||||||||||
Analog Devices | 100 V | 6 V | 6 | 64-LQFP Exposed Pad | 98 % | Surface Mount | Positive | SPI | 6 | 64-LQFP-EP (10x10) | Enable Power Good Soft Start | Buck-Boost | 750 kHz | 60 kHz | Step-Up/Step-Down | 125 ¯C | -40 °C | Transistor Driver | ||||||||||||
Analog Devices | 51 A 180 A | 14 V 70 V | 10 V 30 V | Fully Populated | LTC7060 LTC7871 | Board(s) | Bidirectional DC/DC | Boost Buck | Non-Isolated | 1 | ||||||||||||||||||||
Analog Devices | 100 V | 6 V | 6 | 64-LQFP Exposed Pad | 98 % | Surface Mount | Positive | SPI | 6 | 64-LQFP-EP (10x10) | Enable Power Good Soft Start | Buck-Boost | 750 kHz | 60 kHz | Step-Up/Step-Down | 150 °C | -40 °C | Transistor Driver |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tray | 1 | $ 9.43 | |
| 10 | $ 6.67 | |||
| 25 | $ 6.29 | |||
Description
General part information
LTC7871 Series
The LTC7871 is a high performance bidirectional buck or boost switching regulator controller that operates in either buck or boost mode on demand. It regulates in buck mode from VHIGH-to-VLOWand boost mode from VLOW-to-VHIGHdepending on a control signal, making it ideal for 48V/12V automotive dual battery systems. An accurate current programming loop regulates the maximum current that can be delivered in either direction. The LTC7871 allows both batteries to supply energy to the load simultaneously by driving energy from either battery to the other.Its proprietary constant frequency current mode architecture enhances the signal-to-noise ratio enabling low noise operation and provides excellent current matching between phases. Additional features include an SPI-compliant serial interface, discontinuous or continuous mode of operation, OV/UV monitors, independent loop compensation for buck and boost operation, accurate inductor current monitoring and overcurrent protection.The LTC7871 is available in a 64 pin 10mm × 10mm LWE package.APPLICATIONSAutomotive 48V/12V Dual Battery SystemsBackup Power Systems
Documents
Technical documentation and resources