LTC3883LTC3883-1 Series

Single Phase Step-Down DC/DC Controller with Digital Power System Management

Catalog

Single Phase Step-Down DC/DC Controller with Digital Power System Management

Part	Output Configuration	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Phases	Number of Outputs	Function	Serial Interfaces	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Output Type	Control Features	Supplier Device Package	Mounting Type	Frequency - Switching [Max]	Frequency - Switching [Min]
Analog Devices LTC3883IUH#TRPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	125 ¯C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount
Analog Devices LTC3883IUH#WTRPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	125 ¯C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount	1 MHz	250 kHz
Analog Devices LTC3883IUH-1#WTRPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	125 ¯C	Transistor Driver	Current Limit Enable Frequency Control Phase Control Power Good Soft Start	32-QFN (5x5)	Surface Mount	1 MHz	250 kHz
Analog Devices LTC3883EUH-1#PBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	105 °C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount
Analog Devices LTC3883EUH	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	105 °C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount
Analog Devices LTC3883IUH-1#TRPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	125 ¯C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount
Analog Devices LTC3883IUH#PBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	125 ¯C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount
Analog Devices LTC3883IUH#WPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	125 °C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount	1 MHz	250 kHz
Analog Devices LTC3883EUH#TRPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	105 °C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount
Analog Devices LTC3883EUH-1#TRPBF	Positive	4.5 V	24 V	1	1	Step-Down	I2C PMBus	Buck	-40 °C	105 °C	Transistor Driver	Enable Frequency Control Phase Control Power Good	32-QFN (5x5)	Surface Mount

Catalog

Single Phase Step-Down DC/DC Controller with Digital Power System Management

Key Features

• PMBus/I2C Compliant Serial InterfaceTelemetry Read-Back Includes VIN, IIN, VOUT, IOUT, Temperature and FaultsProgrammable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC and Frequency Synchronization (250kHz to 1MHz)

• Telemetry Read-Back Includes VIN, IIN, VOUT, IOUT, Temperature and Faults

• Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC and Frequency Synchronization (250kHz to 1MHz)

• ±0.5% Output Voltage Accuracy over Temperature

• Integrated 16-Bit ADC and 12-Bit DAC

• Integrated High Side Current Sense Amplifier

• Internal EEPROM with ECC and Fault Logging

• Integrated N-Channel MOSFET Gate Drivers

• Wide VINRange: 4.5V to 24V

• VOUTRange: 0.5V to 5.4V

• Analog Current Mode Control Loop

• Accurate PolyPhase®Current Sharing for Up to 6 Phases

• Auto Calibration of Inductor DCR

• Minimum On Time 45ns

• Available in a 32-Lead (5mm × 5mm) QFN Package

• AEC-Q100 Qualified for Automotive Applications

Description

The LTC3883/LTC3883-1 are PolyPhase capable DC/DC synchronous step-down switching regulator controllers with a PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by the LTPowerPlay™software development tool with graphical user interface (GUI).Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Additionally, parameters can be set via the digital interface or stored in on-chip EEPROM.The LTC3883/LTC3883-1 can be configured for Burst Mode®operation, discontinuous (pulse-skipping) mode or continuous inductor current mode. The LTC3883 incorporates an internal 5V linear regulator while the LTC3883-1 uses an external 5V supply for minimum power loss.The LTC3883/LTC3883-1 are available in a 32-lead 5mm × 5mm QFN package.ApplicationsHigh Current Distributed Power SystemsTelecom SystemsIntelligent Energy Efficient Power Regulation