LTC3882CIUJ#PBF Switching Voltage Regulators Integrated Circuits ICs

Description

The LTC@3882 is a dual, PolyPhase DC/DC synchronous
step-down switching regulator controller with PMBus
compliant serial interface. It uses a constant frequency,
leading-edge modulation, voltage mode architecture for
excellent transient response and output regulation. Each
PWM channel can produce output voltages from 0.5V to
5.25V usingawide range of3.3V compatible power stages,
including power blocks, DrMOS or discrete FET drivers.
Up to four LTC3882s can operate in parallel for2-, 3-, 4-,
6- or 8-phase operation.
LTC3882 system configuration and monitoring is sup-
ported by the LTpowerPlay software tool. The device's
serial interface can be used to read back input voltage,
output voltage and current, temperature and fault status.
A wide range of operating parameters can be set via the
digital interface or stored in internal EEPROM for use at
power up. Switching frequency and phase, output volt-
age and device address can also be programmed using
external configuration resistors.

FEATURES
■PMBus/2C Compliant Serial Intertace
■Monitor Voltage, Current, Temperature and Faults
■Digitally Programmable Voltage, Current Limit,
 Soft-Start/Stop, Sequencing, Margining, AVP and
 UV/OV Thresholds
■3V≤VINSNS S 38V, 0.5V≤Vouτ≤5.25V
■+0.5% Output Voltage Accuracy
■Programmable PWM Frequency or External Clock
 Synchronization from 250kHz to 1.25MHz
■Accurate PolyPhaseo Current Sharing
■Internal EEPROM with Fault Logging and ECC
■IC Supply Range: 3V to 13.2V
■Resistor or Inductor DCR Current Sensing
■Optional Resistor Programming for Key Parameters
■40-Pin (6mm x 6mm) QFN Package
■AEC-Q100 Qualified for Automotive Applications

APPLICATIONS
■High Current Distributed Power Systems
■Servers, Network and Storage Equipment
■Inelligent Energy Eficient Power Regulation
■Industrial/Telecom/ATE Systems

1. Switching Voltage Regulator: The LTC3882CIUJ#PBF is a DC/DC synchronous step-down switching regulator,

capable of converting a higher input voltage to a lower output voltage with high efficiency.

1. Wide Input Voltage Range: It typically operates with an input voltage range of 4.5V to 38V, allowing it to handle

a wide variety of power supply sources.

1. Output Voltage Range: The LTC3882CIUJ#PBF can provide an adjustable output voltage in the range of 0.5V

to 5.5V, which makes it suitable for a wide range of applications.

1. High Efficiency: The IC incorporates advanced control techniques and power MOSFETs to achieve high

conversion efficiency, reducing power dissipation and maximizing battery life in portable applications.

1. Current Monitoring and Protection: The LTC3882CIUJ#PBF offers current monitoring and protection features,

including overcurrent protection (OCP) and overvoltage protection (OVP), to safeguard the system and

connected components.

1. Control and Monitoring Interfaces: The IC provides a variety of control and monitoring interfaces such as

I2C or PMBus, enabling communication with external devices for configuration, voltage monitoring, and

fault reporting.

1. Package: The LTC3882CIUJ#PBF is available in a 40-lead 5mm x 7mm QFN (Quad Flat No-Lead) package,

which offers good thermal performance and compact size.