LP87524J-Q1 (ACTIVE)

4-A + 2.5-A + Two 1.5-A Buck Converters With Integrated Switches

4-A + 2.5-A + Two 1.5-A Buck Converters With Integrated Switches - LP87524J-Q1


The LP87524B/J-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-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-Q1 device supports load-current measurement without the addition of external current-sense resistors. In addition, the LP87524B/J-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.


  • 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)

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Regulated Outputs (#)
Processor Supplier
Processor Name
Vin (Min) (V)
Vin (Max) (V)
Step-Up DC/DC Converter
Step-Down DC/DC Converter
Iout (Max) (A)
Iq (Typ) (mA)
Operating Temperature Range (C)
LP87524J-Q1 LP87524B-Q1 LP87702-Q1
4    4    3   
Texas Instruments    Texas Instruments    TI   
AWR12/14/16    AWR1x    AWR14x, AWR16x   
2.8    2.8    2.8   
5.5    5.5    5.5   
0      0   
4    4    2   
10    10    3.5   
Dynamic Voltage Scaling
Enable Pin
I2C Control
Over Current Protection
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable   
I2C Control
Power Good
UVLO Fixed   
Dynamic Voltage Scaling
Enable Pin
I2C Control
Over Current Protection
Power Good
Power Sequencing
Power Supply and System Monitoring
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable   
Automotive    Automotive    Automotive   
-40 to 125    -40 to 125    -40 to 125   
26VQFN-HR    26VQFN-HR    32VQFN