LP8754 Multiphase 6-Core Step-Down Converter | TI.com

LP8754
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Multiphase 6-Core Step-Down Converter

 

Description

The LP8754 is designed to meet the power management requirements of the latest applications processors in mobile phones and similar portable applications. The device contains six step-down DC/DC converter cores, which are bundled together in a 6-phase buck converter. The device is fully controlled by a Dynamic Voltage Scaling (DVS) interface or an I2C-compatible serial interface.

The automatic PWM/PFM operation together with the automatic phase adding/shedding maximizes efficiency over a wide output current range. The LP8754 supports remote differential voltage sensing to compensate IR drop between the regulator output and the point-of-load thus improving the accuracy of the output voltage.

The protection features include short-circuit protection, current limits, input OVP, UVLO, temperature warning, and shutdown functions. Several error flags are provided for status information of the IC. In addition, I2C read-back includes total load current and load current for each buck core: The LP8754 has the ability to sense current being delivered to the load without the addition of current sense resistors. During start-up, the device controls the output voltage slew rate to minimize overshoot and the inrush current.

For all available packages, see the orderable addendum at the end of the datasheet.

Features

  • Six High-Efficiency Step-Down DC/DC Converter Cores:
    • Max Output Current 10 A
    • Cores Bundled to a 6-Phase Converter
    • Load Current Reporting
    • Programmable Overcurrent Protection (OCP)
    • Auto PWM/PFM and Forced-PWM Operations and
      Automatic Low Power-Mode Setting
    • Automatic Phase Adding/Shedding
    • Remote Differential Feedback Voltage Sensing
    • Output Voltage Ramp Control
    • VOUT Range = 0.6 V to 1.67 V
  • I2C-Compatible Interface which Supports
    Standard (100 kHz), Fast (400 kHz), and High-Speed
    (3.4 MHz) Modes
  • Four Selectable I2C Addresses
  • Interrupt Function with Programmable Masking
  • Output Short-Circuit and Input Overvoltage
    Protection (OVP)
  • Spread Spectrum and Phase Control for EMI
    Reduction
  • Overtemperature Protection (OTP)
  • Undervoltage Lock-out (UVLO)

Parametrics

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Part number Order Regulated outputs (#) Vin (Min) (V) Vin (Max) (V) Step-up DC/DC controller Step-down DC/DC controller LDO Step-up DC/DC converter Step-down DC/DC converter Iout (Max) (A) Iq (Typ) (mA) Features Rating Operating temperature range (C) Configurability Package Group Package size: mm2:W x L (PKG)
LP8754 Order now 6     2.5     5     0     0     0     0     6     10     0.08     Adjustable Current Limit
Dynamic Voltage Scaling
I2C
Light Load Efficiency
Multiple Outputs
Phase Interleaving
Power Good
Remote Sense
Synchronous Rectification    
Catalog     -40 to 85       DSBGA | 49     See datasheet (DSBGA)    
LP8758-B0 Order now 1     2.5     5.5     0     0     0     0     1     16     0.006     Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Multiple Outputs
Output Discharge
Phase Interleaving
Power Good
Remote Sense
Synchronous Rectification    
Catalog     -40 to 85     Factory programmable
Software configurable    
DSBGA | 35     See datasheet (DSBGA)    
LP8758-E0 Order now 4     2.5     5.5     0     0     0     0     4     4     0.006     Adjustable Current Limit
Dynamic Voltage Scaling
Enable
I2C
Light Load Efficiency
Multiple Outputs
Output Discharge
Phase Interleaving
Power Good
Remote Sense
Synchronous Rectification    
Catalog     -40 to 85     Factory programmable
Software configurable    
DSBGA | 35     See datasheet (DSBGA)