LTC3709EUH#PBF

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Analog Devices

FAST 2-PHASE, NO RSENSE™, SYNCHRONOUS DC/DC CONTROLLER WITH TRACKING/SEQUENCING

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DocumentsR384 Reliability Data Datasheet

LTC3709EUH#PBF

Active

Analog Devices

FAST 2-PHASE, NO RSENSE™, SYNCHRONOUS DC/DC CONTROLLER WITH TRACKING/SEQUENCING

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DocumentsR384 Reliability Data Datasheet

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Technical Specifications

Parameters and characteristics for this part

Specification	LTC3709EUH#PBF

Clock Sync	False
Control Features	Power Good, Soft Start, Enable, Tracking
Duty Cycle (Max) [Max]	90 %
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Supplier Device Package	32-QFN (5x5)
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	37 V
Voltage - Supply (Vcc/Vdd) [Min]	3.9 V

LTC3709 Series

Fast 2-Phase, No RSENSE™, Synchronous DC/DC Controller with Tracking/Sequencing

Part	Supplier Device Package	Control Features	Output Configuration	Output Phases	Duty Cycle (Max) [Max]	Function	Topology	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Synchronous Rectifier	Mounting Type	Number of Outputs	Output Type	Clock Sync	Package / Case [x]	Package / Case
Analog Devices LTC3709EUH#PBF	32-QFN (5x5)	Enable Power Good Soft Start Tracking	Positive	2	90 %	Step-Down	Buck	3.9 V	37 V	85 °C	-40 °C		Surface Mount	1	Transistor Driver
Analog Devices LTC3709EG#TRPBF	36-SSOP	Enable Power Good Soft Start Tracking	Positive	2	90 %	Step-Down	Buck	3.9 V	37 V	85 °C	-40 °C		Surface Mount	1	Transistor Driver		0.209 " 5.3 mm	36-SSOP

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 10.66
		10	$ 7.61
		25	$ 7.36

Description

General part information

LTC3709 Series

The LTC3709 is a single output, dual phase, synchronous step-down switching regulator. The controller uses a constant on-time, valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in input supply voltage. An internal phase-locked loop allows the LTC3709 to be synchronized to an external clock.A TRACK pin is provided for tracking or sequencing the output voltage among several LTC3709 chips or an LTC3709 and other DC/DC regulators. Soft-start is accomplished using an external timing capacitor.Fault protection is provided by an output overvoltage comparator and an optional short-circuit shutdown timer. The current limit level is user programmable. A wide supply range allows voltages as high as 31V to step down to 0.6V.Protected by U.S. Patents, including 5481178, 6476589, 6144194, 5847554, 6177678, 6304066, 6580258, 6674274, 6462525, 6593724.ApplicationsNotebook ComputersPower Supply for DSP, ASIC, Graphic Processors