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LP87524JRNFTQ1

Multiphase 4MHz, 4A/1.0V + 2.5A/1.8V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LP87524JRNFTQ1
Datasheet:

LP87524JRNFTQ1 Datasheet (PDF)
Regulated outputs (#):

4
Vin (min) (V):

2.8
Vin (max) (V):

5.5
Iout (max) (A):

4
EDA/CAD Models:

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LP87524JRNFTQ1 General Description

The LP87524B/J/P-Q1 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 4 single phase outputs. The device is controlled by an I²C-compatible serial interface and by enable signals.

The automatic PFM/PWM (AUTO mode) operation maximizes efficiency over a wide output-current range. The LP87524B/J/P-Q1 supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL) thus improving the accuracy of the output voltage. In addition the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP87524B/J/P-Q1 device supports load-current measurement without the addition of external current-sense resistors. In addition, the LP87524B/J/P-Q1 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 and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.

Key Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
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:
- Total Output Current Up To 10 A
- Output Voltage Slew-Rate 3.8 mV/µs
4-MHz Switching Frequency
Spread-Spectrum Mode and Phase Interleaving
Configurable General Purpose I/O (GPIOs)
I²C-Compatible Interface which 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)

Specifications

Regulated outputs (#)	4	Vin (min) (V)	2.8
Vin (max) (V)	5.5	Iout (max) (A)	4
Configurability	Factory programmable, Software configurable	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)	4400	Features	Diagnostics, Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed
Operating temperature range (°C)	-40 to 125	Processor name	mmWave AWR
Processor supplier	Texas Instruments	Shutdown current (ISD) (typ) (µA)	1.4
Switching frequency (typ) (kHz)	4000	feature-function	Buck Converter
feature-switching-frequency-khz	4000(Typ)	feature-process-technology
feature-input-voltage-v	2.8 to 5.5	feature-minimum-operating-supply-voltage-v
feature-maximum-operating-supply-voltage-v		feature-maximum-power-dissipation-mw
feature-packaging	Tape and Reel	feature-rad-hard
feature-pin-count	26	feature-cecc-qualified
feature-esd-protection		feature-military	No
feature-aec-qualified	Yes	feature-aec-qualified-number	AEC-Q100
feature-auto-motive	Yes	feature-p-pap	Yes
feature-eccn-code	EAR99	feature-svhc	Yes
feature-svhc-exceeds-threshold	Yes