LTC3860EUH#PBF

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Analog Devices

DUAL, MULTIPHASE STEP-DOWN VOLTAGE MODE DC/DC CONTROLLER WITH CURRENT SHARING

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LTC3860EUH#PBF

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Analog Devices

DUAL, MULTIPHASE STEP-DOWN VOLTAGE MODE DC/DC CONTROLLER WITH CURRENT SHARING

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Technical Specifications

Parameters and characteristics for this part

Specification	LTC3860EUH#PBF

Clock Sync	False
Control Features	Tracking, Soft Start, Current Limit, Enable, Phase Control, Power Good, Frequency Control
Duty Cycle (Max) [Max]	91.5 %
Frequency - Switching [Max]	1.25 MHz
Frequency - Switching [Min]	250 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	PWM Signal
Supplier Device Package	32-QFN (5x5)
Synchronous Rectifier	False
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	5.5 V
Voltage - Supply (Vcc/Vdd) [Min]	3 V

LTC3860 Series

Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing

Part	Output Type	Mounting Type	Frequency - Switching [Max]	Frequency - Switching [Min]	Number of Outputs	Supplier Device Package	Duty Cycle (Max) [Max]	Control Features	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Output Configuration	Function	Topology	Output Phases	Operating Temperature [Min]	Operating Temperature [Max]
Analog Devices LTC3860EUH#TRPBF	PWM Signal	Surface Mount	1.25 MHz	250 kHz	2	32-QFN (5x5)	91.5 %	Current Limit Enable Frequency Control Phase Control Power Good Soft Start Tracking	5.5 V	3 V	Positive	Step-Down	Buck	2	-40 °C	125 ¯C
Analog Devices LTC3860EUH#PBF	PWM Signal	Surface Mount	1.25 MHz	250 kHz	2	32-QFN (5x5)	91.5 %	Current Limit Enable Frequency Control Phase Control Power Good Soft Start Tracking	5.5 V	3 V	Positive	Step-Down	Buck	2	-40 °C	125 ¯C
Analog Devices LTC3860EUH#TRPBF	PWM Signal	Surface Mount	1.25 MHz	250 kHz	2	32-QFN (5x5)	91.5 %	Current Limit Enable Frequency Control Phase Control Power Good Soft Start Tracking	5.5 V	3 V	Positive	Step-Down	Buck	2	-40 °C	125 ¯C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	67	$ 4.50

Description

General part information

LTC3860 Series

The LTC3860 is a dual, PolyPhase®synchronous stepdown switching regulator controller for high current distributed power systems, digital signal processors, and other telecom and industrial DC/DC power supplies. It uses a constant frequency voltage mode architecture combined with very low offset, high bandwidth error amplifiers and a remote output sense differential amplifier for excellent transient response and output regulation.The controller incorporates lossless inductor DCR current sensing to maintain current balance between phases and to provide overcurrent protection. The chip operates from a VCCsupply between 3V and 5.5V and is designed for stepdown conversion from VINbetween 3V and 24V to output voltages between 0.6V and VCC– 0.5V.The TRACK/SS pins provide programmable soft-start or tracking functions. Inductor current reversal is disabled during soft-start to safely power prebiased loads. The constant operating frequency can be synchronized to an external clock or linearly programmed from 250kHz to 1.25MHz. Up to six LTC3860 controllers can operate in parallel for 1-, 2-, 3-, 4-, 6- or 12-phase operation.The LTC3860 is available in a 32-pin 5mm × 5mm QFN package.ApplicationsHigh Current Distributed Power SystemsDigital Signal Processor and ASIC SuppliesTelecom SystemsIndustrial Power Supplies

Documents

Technical documentation and resources

R415 Reliability Data

Reliability Data