Texas Instruments LP8758-EA Handleiding

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LP8758-EA Four 4-A Output Synchronous Step-Down DCDC Converters

1 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

–V

OUT

range: 0.5 V to 3.36 V with DVS

•Programmable start-up and shutdown sequencing

with enable signal

•I

2

C-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

•Optical modules

•Drone systems

•Smart phones, eBooks, and tablets

•Solid state drives

3 Description

The LP8758-EA 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 I

2

C-compatible

serial interface.

The automatic PWM-PFM (AUTO mode) operation

maximizes efficiency over a wide output-current

range.

The LP8758-EA 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-EA 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.

Device Information

PART NUMBER

(1)

DEFAULT OUTPUT VOLTAGE

LP8758-EA

V

OUT0

800 mV

V

OUT1

800 mV

V

OUT2

800 mV

V

OUT3

800 mV

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

SW_B0

SW_B1

SW_B2

SW_B3

VIN_B0

VIN_B1

VIN_B2

VIN_B3

VANA

V

IN

FB_B0

FB_B1

V

OUT3

LP8758

FB_B2

FB_B3

NRST

SDA

SCL

nINT

EN1

EN2

GNDs

V

OUT2

V

OUT1

V

OUT0

Simplified Schematic

Output Current (A)

Efficiency (%)

0.0010.010.1155

70

75

80

85

90

95

100

D038

V

IN

= 3.3 V

2.5 V

1.8 V

V

OUT

settings = 1.8 V and 2.5 V

Efficiency vs Output Current

LP8758-EA

SNVSC24A – APRIL 2021 – REVISED NOVEMBER 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product specificaties