LP8758-E0 Four-phase, quad 4A output DC-DC step-down converter | TI.com

LP8758-E0
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Four-phase, quad 4A output DC-DC step-down converter

 

Description

The LP8758-E0 device is designed to meet power management requirements for low-power processors in mobile phones, network cards, and similar applications. The device contains four step-down DC-DC converter cores, providing four output voltage rails. The device is controlled by an I2C-compatible serial interface.

The automatic PWM-PFM (AUTO mode) operation maximizes efficiency over a wide output-current range.

The LP8758-E0 supports programmable start-up and shutdown sequencing synchronized to hardware Enable input signal.

The protection features include short-circuit protection, current limits, input supply UVLO, and temperature warning and shutdown functions. Several error flags are provided for status information of the device. In addition, the LP8758-E0 device supports load current measurement without the addition of external current sense resistors. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the inrush current.

Features

  • Fully Integrated Quad Buck, up to 4-A Programmable Maximum Output Current Per Buck
    • Auto PWM-PFM and Forced-PWM Operations
    • Programmable Output Voltage Slew Rate From 30 mV/µs to 0.5 mV/µs
    • Input Voltage Range: 2.5 V to 5.5 V
    • VOUT Range: 0.5 V to 3.36 V with DVS
  • Programmable Start-Up and Shutdown Sequencing With Enable Signal
  • 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
  • Load Current Measurement
  • Output Short-Circuit and Overload Protection
  • Spread-Spectrum Mode for EMI Reduction
  • The Four Buck Cores Operate 90° out of Phase Thereby Reducing Input Ripple Current
  • Overtemperature Warning and Protection
  • Undervoltage Lockout (UVLO)

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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)
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)    
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)