LTC3600 Series

15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down Regulator

Catalog

15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down Regulator

Part	Number of Outputs	Voltage - Input (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Output Type	Current - Output	Voltage - Output (Max) [Max]	Package / Case	Supplier Device Package	Function	Voltage - Input (Min) [Min]	Output Configuration	Mounting Type	Topology	Frequency - Switching	Package / Case
Analog Devices LTC3600IDD#TRPBF	1	15 V	-40 °C	125 ¯C	Programmable	1.5 A	14.5 V	12-WFDFN Exposed Pad	12-DFN (3x3)	Step-Down	4 V	Positive	Surface Mount	Buck	1 MHz
Analog Devices LTC3600EMSE#TRPBF	1	15 V	-40 °C	125 ¯C	Programmable	1.5 A	14.5 V	12-TSSOP Exposed Pad	12-MSOP-EP	Step-Down	4 V	Positive	Surface Mount	Buck	1 MHz	0.118 in 3 mm
Analog Devices LTC3600IMSE#TRPBF	1	15 V	-40 °C	125 ¯C	Programmable	1.5 A	14.5 V	12-TSSOP Exposed Pad	12-MSOP-EP	Step-Down	4 V	Positive	Surface Mount	Buck	1 MHz	0.118 in 3 mm

Catalog

15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down Regulator

Key Features

• Single Resistor Programmable VOUT

• ±1% ISETAccuracy

• Tight VOUTRegulation Independent of VOUTVoltage

• Easy to Parallel for Higher Current and Heat Spreading

• Wide VOUTRange 0V to VIN– 0.5V

• High Efficiency: Up to 96%

• 1.5A Output Current

• Adjustable Frequency: 200kHz to 4MHz

• 4V to 15V VINRange

• Current Mode Operation for Excellent Line and Load Transient Response

• Zero Supply Current in Shutdown

• Available in Thermally Enhanced 12-Pin (3mm × 3mm) DFN and MSOP Packages

Description

The LTC3600 is a high efficiency, monolithic synchronous buck regulator whose output is programmed with just one external resistor. The accurate internally generated 50μA current source on the ISETpin allows the use of a single external resistor to program an output voltage that ranges from 0V to 0.5V below VIN. The VOUTvoltage feeds directly back to the error amplifier in unity gain fashion and equals the ISETvoltage. The operating supply voltage range is 4V to 15V, making it suitable for dual lithium-ion battery and 5V or 12V input point-of-load power supply applications.The operating frequency is synchronizable to an external clock or programmable from 200kHz to 4MHz with an external resistor. High switching frequency allows the use of small surface mount inductors. The unique constant on-time architecture is ideal for operating at high frequency in high step-down ratio applications that also demand fast load transient response.ApplicationsVoltage Tracking SuppliesPoint-of-Load Power SuppliesPortable InstrumentsDistributed Power Systems