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1 Features

1? 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)

2 Applications

? Smart Phones, eBooks, and Tablets

? Network Processor Cards (NPCs), Wireless and

DSL Modems

? Solid State Drives

? Gaming Devices

3 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 DCDC

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.