LTC7871 Series
Six-Phase, Synchronous Bidirectional Buck or Boost Controller
Manufacturer: Analog Devices Inc./Maxim Integrated
Catalog
Six-Phase, Synchronous Bidirectional Buck or Boost Controller
| Part | Output Phases | Operating Temperature [Min] | Operating Temperature [Max] | Output Type | Number of Outputs | Synchronous Rectifier | Clock Sync | Duty Cycle (Max) [Max] | Serial Interfaces | Control Features | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Output Configuration | Frequency - Switching [Min] | Frequency - Switching [Max] | Package / Case | Mounting Type | Supplier Device Package | Function | Topology | Outputs and Type | Outputs and Type | Supplied Contents | Board Type | Regulator Topology | Current - Output | Utilized IC / Part | Main Purpose | Voltage - Output | Voltage - Input [Max] | Voltage - Input [Min] | Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | 6 | -40 °C | 150 °C | Transistor Driver | 6 | 98 % | SPI | Enable Power Good Soft Start | 100 V | 6 V | Positive | 60 kHz | 750 kHz | 64-LQFP Exposed Pad | Surface Mount | 64-LQFP-EP (10x10) | Step-Up/Step-Down | Buck-Boost | ||||||||||||||
Analog Devices Inc./Maxim Integrated | 6 | -40 C | 125 °C | Transistor Driver | 6 | 98 % | SPI | Enable Power Good Soft Start | 100 V | 6 V | Positive | 60 kHz | 750 kHz | 64-LQFP Exposed Pad | Surface Mount | 64-LQFP-EP (10x10) | Step-Up/Step-Down | Buck-Boost | ||||||||||||||
 Analog Devices Inc./Maxim Integrated | 6 | -40 C | 125 °C | Transistor Driver | 6 | 98 % | SPI | Enable Power Good Soft Start | 100 V | 6 V | Positive | 60 kHz | 750 kHz | 64-LQFP Exposed Pad | Surface Mount | 64-LQFP-EP (10x10) | Step-Up/Step-Down | Buck-Boost | ||||||||||||||
 Analog Devices Inc./Maxim Integrated | 1 | 1 Non-Isolated Output Non-Isolated | Board(s) | Fully Populated | Boost Buck | 51 A 180 A | LTC7060 LTC7871 | DC/DC Bidirectional | 14 V 48 V | 14 V 70 V | 10 V 30 V | Board(s) | ||||||||||||||||||||
Analog Devices Inc./Maxim Integrated | 6 | -40 °C | 150 °C | Transistor Driver | 6 | 98 % | SPI | Enable Power Good Soft Start | 100 V | 6 V | Positive | 60 kHz | 750 kHz | 64-LQFP Exposed Pad | Surface Mount | 64-LQFP-EP (10x10) | Step-Up/Step-Down | Buck-Boost | ||||||||||||||
Analog Devices Inc./Maxim Integrated | 6 | -40 °C | 150 °C | Transistor Driver | 6 | 98 % | SPI | Enable Power Good Soft Start | 100 V | 6 V | Positive | 60 kHz | 750 kHz | 64-LQFP Exposed Pad | Surface Mount | 64-LQFP-EP (10x10) | Step-Up/Step-Down | Buck-Boost |
Description
AI
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