LTC3773 Series

Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking

Catalog

Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking

Part	Output Configuration	Number of Outputs	Output Type	Output Phases	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Function	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Control Features	Mounting Type	Package / Case [x]	Package / Case	Duty Cycle (Max) [Max]	Supplier Device Package	Frequency - Switching [Min]	Frequency - Switching [Max]
Analog Devices LTC3773EG#TRPBF	Positive	3	Transistor Driver	3	85 °C	-40 °C	Buck	Step-Down	3.3 V	36 V	Enable Power Good Tracking	Surface Mount	0.209 " 5.3 mm	36-SSOP	98.5 %	36-SSOP	220 kHz	560 kHz
Analog Devices LTC3773EUHF#PBF	Positive	3	Transistor Driver	3	85 °C	-40 °C	Buck	Step-Down	3.3 V	36 V	Enable Power Good Tracking	Surface Mount		38-WFQFN Exposed Pad	98.5 %		220 kHz	560 kHz
Analog Devices LTC3773EUHF	Positive	3	Transistor Driver	3	85 °C	-40 °C	Buck	Step-Down	3.3 V	36 V	Enable Power Good Tracking	Surface Mount		38-WFQFN Exposed Pad	98.5 %		220 kHz	560 kHz
Analog Devices LTC3773EUHF#TRPBF	Positive	3	Transistor Driver	3	85 °C	-40 °C	Buck	Step-Down	3.3 V	36 V	Enable Power Good Tracking	Surface Mount		38-WFQFN Exposed Pad	98.5 %		220 kHz	560 kHz

Catalog

Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking

Key Features

• Current Mode Controller with On-board MOSFET Drivers

• Programmable Power Up/Down Tracking

• Wide VINRange: 3.3V to 36V (VCC= 5V)

• ±1% 0.6V VFBAccuracy Over Temperature

• Power Good Output Voltage Monitor

• Phase-Lockable or Adjustable Frequency: 160kHz to 700kHz

• OPTI-LOOP®Compensation Minimizes COUT

• Current Foldback and Overvoltage Protection

• Selectable Continuous, Discontinuous or Burst Mode®Operation at Light Load

• Programmable Phase Operation

• Available in 5mm × 7mm QFN and 36-Lead

• SSOP Packages

Description

The LTC3773 is a high performance, 3-phase, triple output synchronous step-down switching regulator controller with output voltage power up/down tracking capability. The controller allows for sequential, coincident or ratiometric tracking.This 3-phase controller drives its output stages with 120° phase separation at frequencies of up to 700kHz per phase minimizing the RMS input current. Light load efficiency can be maximized by using selectable Burst Mode operation. The 0.6V precision reference supports output voltages from 0.6V to 5V.Fault protection features include output overvoltage, input undervoltage lockout plus current foldback under short-circuit or overload conditions.ApplicationsServers, Telecom, Industrial Power SuppliesGeneral Purpose Multiple Rail DC/DCFPGA and DSP Requirements