LP875701-Q1 Texas instruments

LP875701-Q1

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LP875701-Q1

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Описание

The LP875701-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 in forced-PWM mode. The device is controlled by an I2C-compatible serial interface and by enable signals. The LP875701-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) which improves 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 LP875701-Q1 device supports load-current measurement without the addition of external current-sense resistors. The LP875701-Q1 device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches, and processor reset. During start-up , the device controls the output slew rate to minimize output-voltage overshoot and in-rush current.

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
Input Voltage: 2.8 V to 5.5 V
Output Voltage: 1.0 V
Four High-Efficiency Step-Down DC/DC Converter Cores:
- Maximum Output Current: 10 A (2.5 A per Phase)
Switching Frequency: 3 MHz
Spread-Spectrum Mode and Phase Interleaving
Configurable 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) Modes
Interrupt Function With Programmable Masking
Programmable Power-Good Signal (PGOOD)
Output Short-Circuit and Overload Protection
Overtemperature Warning and Protection
Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)

Regulated outputs (#)	1
Vin (min) (V)	2.8
Vin (max) (V)	5.5
Iout (max) (A)	10
Rating	Automotive
Step-down DC/DC controller	0
Step-down DC/DC converter	1
Step-up DC/DC controller	0
Step-up DC/DC converter	0
LDO	0
Iq (typ) (mA)	0.0067
Switching frequency (max) (kHz)	3300
Features	Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed
Operating temperature range (°C)	-40 to 125
Processor name	EyeQ4 Mid
Processor supplier	Mobileye
Shutdown current (ISD) (typ) (µA)	1.4
Switching frequency (typ) (kHz)	3000
Configurability	Factory programmable, Software configurable