Dual Buck Converters and Dual Linear Regulators for TDA3x Processors - LP87322E-Q1

LP87322E-Q1 (ACTIVE)

Dual Buck Converters and Dual Linear Regulators for TDA3x Processors

 

Description

The LP87322B/D/E/F-Q1 is designed to meet the power management requirements of the latest processors and platforms in automotive camera and radar applications. The device contains two step-down DC-DC converters and two linear regulators and general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output-current range. The LP87322B/D/E/F-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 LP87322B/D/E/F-Q1 device also supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.

Features

  • 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
  • Two High-Efficiency Step-Down DC-DC Converters:
    • Output Voltage: 0.7 V to 3.36 V
    • Maximum Output Current 2 A
    • Programmable Output-Voltage Slew Rate from 0.5 mV/µs to 10 mV/µs
    • 2-MHz Switching Frequency
    • Spread-Spectrum Mode and Phase Interleaving for EMI Reduction
  • Two Linear Regulators:
    • Input Voltage: 2.5 V to 5.5 V
    • Output Voltage: 0.8 V to 3.3 V
    • Maximum Output Current 300 mA
  • Configurable General-Purpose Output Signals (GPO, GPO2)
  • 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)
  • 28-pin, 5-mm × 5-mm VQFN Package with Wettable Flanks

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Parametrics Compare all products in Power Management Multi-Channel IC (PMIC) Solutions

 
Regulated Outputs (#)
Processor Supplier
Processor Name
Vin (Min) (V)
Vin (Max) (V)
LDO
Step-Down DC/DC Converter
Iout (Max) (A)
Features
Rating
Operating Temperature Range (C)
Pin/Package
LP87322E-Q1 LP87322F-Q1
4    4   
Texas Instruments    Texas Instruments   
TDA3x    TDA3x   
2.8    2.8   
5.5    5.5   
2     
2    2   
2    2   
Enable Pin
I2C Control
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable   
Enable Pin
I2C Control
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable   
Automotive    Automotive   
-40 to 125    -40 to 125   
28VQFN    28VQFN