LP87523-Q1 Texas instruments

LP87523-Q1

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LP87523-Q1

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Описание

The LP8752x-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 LP8752x-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 LP8752x-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.

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: 0.6 V to 3.36 V
Four High-Efficiency Step-Down DC/DC Converter Cores:
- Maximum Output Current: 10 A
Switching Frequency: 2 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 (#)	3
Vin (min) (V)	2.8
Vin (max) (V)	5.5
Iout (max) (A)	2
Rating	Automotive
Step-down DC/DC controller	0
Step-down DC/DC converter	4
Step-up DC/DC controller	0
Step-up DC/DC converter	0
LDO	0
Iq (typ) (mA)	0.0067
Switching frequency (max) (kHz)	2200
Features	Diagnostics, 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	Generic
Processor supplier	Generic
Shutdown current (ISD) (typ) (µA)	1.4
Switching frequency (typ) (kHz)	2000
Configurability	Factory programmable, Software configurable