LP87561 Series

Automotive multiphase 16-A buck converter with integrated switches

Catalog(2 parts)

Part	Voltage - Input (Max)▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Function	Frequency - Switching▲▼	Voltage - Output (Min/Fixed)▲▼	Package / Case	Output Configuration	Supplier Device Package▲▼	Supplier Device Package▲▼	Supplier Device Package	Current - Output▲▼	Topology	Synchronous Rectifier▲▼	Number of Outputs▲▼	Output Type	Mounting Type	Voltage - Input (Min)▲▼	Qualification	Voltage - Output (Max)▲▼	Grade
Texas Instruments LP87561IRNFTQ1 Buck Switching Regulator IC Positive Adjustable 0.6V 4 Output 16A 26-PowerVFQFN	5.5 V	-40 °C	125 °C	Step-Down	2000000 Hz	0.6000000238418579 V	26-PowerVFQFN	Positive	4.5 ul	4 ul	26-VQFN-HR	16 A	Buck		4 ul	Adjustable	Surface Mount, Wettable Flank	2.799999952316284 V	AEC-Q100	3.359999895095825 V	Automotive
Texas Instruments LP87561IRNFRQ1 Buck Switching Regulator IC Positive Adjustable 0.6V 4 Output 16A 26-PowerVFQFN	5.5 V	-40 °C	125 °C	Step-Down	2000000 Hz	0.6000000238418579 V	26-PowerVFQFN	Positive	4.5 ul	4 ul	26-VQFN-HR	16 A	Buck		4 ul	Adjustable	Surface Mount, Wettable Flank	2.799999952316284 V	AEC-Q100	3.359999895095825 V	Automotive

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C4BInput Voltage: 2.8 V to 5.5 VOutput Voltage: 0.6 V to 3.36 VFour High-Efficiency Step-Down DC/DC Converter Cores:Maximum Output Current: 16 A (4 A per Phase)Programmable Output Voltage Slew-Rate: 0.5 mV/µs to 10 mV/µsSwitching Frequency: 2 MHzSpread-Spectrum Mode and Phase InterleavingConfigurable General Purpose I/O (GPIOs)I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) ModesInterrupt Function With Programmable MaskingProgrammable Power-Good Signal (PGOOD)Output Short-Circuit and Overload ProtectionOvertemperature Warning and ProtectionOvervoltage Protection (OVP) and Undervoltage Lockout (UVLO)Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C4BInput Voltage: 2.8 V to 5.5 VOutput Voltage: 0.6 V to 3.36 VFour High-Efficiency Step-Down DC/DC Converter Cores:Maximum Output Current: 16 A (4 A per Phase)Programmable Output Voltage Slew-Rate: 0.5 mV/µs to 10 mV/µsSwitching Frequency: 2 MHzSpread-Spectrum Mode and Phase InterleavingConfigurable General Purpose I/O (GPIOs)I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) ModesInterrupt Function With Programmable MaskingProgrammable Power-Good Signal (PGOOD)Output Short-Circuit and Overload ProtectionOvertemperature Warning and ProtectionOvervoltage Protection (OVP) and Undervoltage Lockout (UVLO)

Description

The LP8756x-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output, 3-phase and 1-phase outputs, 2-phase and 2-phase outputs, one 2-phase and two 1-phase outputs, or four 1-phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals. The automatic pulse-width-modulation (PWM) to pulsed-frequency-modulation (PFM) operation (AUTO mode), together with the automatic phase adding and phase shedding, maximizes efficiency over a wide output-current range. The LP8756x-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) improving the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances. The LP8756x-Q1 device supports load-current measurement without the addition of external current-sense resistors. The device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can include GPIO signals to control external regulators, load switches, and processor reset. During start-up and voltage change, the device controls the output slew rate to minimize output-voltage overshoot and in-rush current. The LP8756x-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output, 3-phase and 1-phase outputs, 2-phase and 2-phase outputs, one 2-phase and two 1-phase outputs, or four 1-phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals. The automatic pulse-width-modulation (PWM) to pulsed-frequency-modulation (PFM) operation (AUTO mode), together with the automatic phase adding and phase shedding, maximizes efficiency over a wide output-current range. The LP8756x-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) improving the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances. The LP8756x-Q1 device supports load-current measurement without the addition of external current-sense resistors. The device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can include GPIO signals to control external regulators, load switches, and processor reset. During start-up and voltage change, the device controls the output slew rate to minimize output-voltage overshoot and in-rush current.