Specification	LTC1709EG#TRPBF

Clock Sync	False
Control Features	Soft Start, Enable
Duty Cycle (Max) [Max]	99.5 %
Frequency - Switching [Max]	310 kHz
Frequency - Switching [Min]	140 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	36-SSOP
Package / Case [x]	0.209 in
Package / Case [x]	5.3 mm
Supplier Device Package	36-SSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	36 V
Voltage - Supply (Vcc/Vdd) [Min]	4 V

LTC1709 Series

2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulators

Part	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Control Features	Number of Outputs	Function	Mounting Type	Output Configuration	Topology	Output Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Duty Cycle (Max) [Max]	Frequency - Switching [Min]	Frequency - Switching [Max]	Package / Case [x]	Package / Case [x]	Package / Case	Output Phases
Analog Devices Inc./Maxim Integrated LTC1709EG#TRPBF	36-SSOP	85 C	-40 ¯C	Enable Soft Start	2	Step-Down	Surface Mount	Positive	Buck	Transistor Driver	4 V	36 V	99.5 %	140 kHz	310 kHz	0.209 in	5.3 mm	36-SSOP	2
Analog Devices Inc./Maxim Integrated LTC1709EG-8#PBF	36-SSOP	85 C	-40 ¯C	Enable Power Good Soft Start	2	Step-Down	Surface Mount	Positive	Buck	Transistor Driver	4 V	36 V	99.5 %	140 kHz	320 kHz	0.209 in	5.3 mm	36-SSOP	2
Analog Devices Inc./Maxim Integrated LTC1709EG-9#PBF	36-SSOP	85 C	-40 ¯C	Enable Power Good Soft Start	2	Step-Down	Surface Mount	Positive	Buck	Transistor Driver	4 V	36 V	99.5 %	140 kHz	320 kHz	0.209 in	5.3 mm	36-SSOP	2
Analog Devices Inc./Maxim Integrated LTC1709EG#PBF	36-SSOP	85 C	-40 ¯C	Enable Soft Start	2	Step-Down	Surface Mount	Positive	Buck	Transistor Driver	4 V	36 V	99.5 %	140 kHz	310 kHz	0.209 in	5.3 mm	36-SSOP	2
Analog Devices Inc./Maxim Integrated LTC1709EG-85#TRPBF	36-SSOP	85 C	-40 ¯C	Enable Power Good Soft Start	2	Step-Down	Surface Mount	Positive	Buck	Transistor Driver	4 V	36 V	99.5 %	140 kHz	310 kHz	0.209 in	5.3 mm	36-SSOP	2

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 8.59	1m+

Description

General part information

LTC1709 Series

The LTC1709-8/LTC1709-9 are 2-phase, VID programmable, synchronous step-down switching regulator controllers that drive two all N-channel external power MOSFET stages in a fixed frequency architecture. The 2-phase controller drives its two output stages out of phase at frequencies from 150kHz to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The 2-phase technique effectively multiplies the fundamental frequency by two, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified.An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required for high current applications.The RUN/SS pin provides soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values. The LTC1709-8/LTC1709-9 implement two different VID tables compliant with VRM8.4 and VRM9.0 respectively.Vout RangeVRMLTC17091.3V to 3.5VVRM8.4LTC1709-70.925V to 2VMobileLTC1709-81.3V to 3.5VVRM8.4LTC1709-851.05V to 1.825VVRM8.5LTC1709-91.1V to 1.85VVRM9.0ApplicationsWorkstationsInternet ServersLarge Memory ArraysDC Power Distribution Systems

Documents

Technical documentation and resources

LTC1709EG#TRPBF | Datasheet

Datasheet

R384 Reliability Data

Reliability Data