LTC1265CS-3.3#PBF

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Analog Devices Inc./Maxim Integrated

1.2A, HIGH EFFICIENCY STEP-DOWN DC/DC CONVERTER

LTC1265CS-3.3#PBF

Active

Analog Devices Inc./Maxim Integrated

1.2A, HIGH EFFICIENCY STEP-DOWN DC/DC CONVERTER

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC1265 Series

The LTC1265 is a monolithic step-down current mode DC/DC converter featuring Burst Mode™ operation at low output current. The LTC1265 incorporates a 0.3Ω switch (VIN=10V) allowing up to 1.2A of output current.Under no load condition, the converter draws only 160µA. In shutdown it typically draws a mere 5µA making this converter ideal for current sensitive applications. In dropout the internal P-channel MOSFET switch is turned on continuously maximizing the life of the battery source. The LTC1265 incorporates automatic power saving Burst Mode operation to reduce gate charge losses when the load currents drop below the level required for continuous operation.The inductor current is user-programmable via an external current sense resistor. Operation up to 700kHz permits the use of small surface mount inductors and capacitors.Applications5V to 3.3V ConversionDistributed Power SystemsStep-Down ConvertersInverting ConvertersMemory Backup SupplyPortable InstrumentsBattery-Powered EquipmentCellular Telephones

Technical Specifications

Parameters and characteristics for this part

Specification	LTC1265CS-3.3#PBF

Current - Output	1.2 A
Frequency - Switching (Max)	700 kHz
Function	Step-Up/Step-Down, Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	70 °C
Operating Temperature (Min)	0 °C
Output Configuration	Positive or Negative, Positive, Negative
Output Type	Fixed
Package Length	0.154 in
Package Name	14-SO, 14-SOIC
Package Width	3.9 mm
Synchronous Rectifier	No
Topology	Buck-Boost, Buck, SEPIC
Voltage - Input (Max)	13 V
Voltage - Input (Min)	4 V
Voltage - Output (Min/Fixed)	3.3 V

LTC1265 Series

Part	Package Name	Synchronous Rectifier	Voltage - Input (Min)	Frequency - Switching (Max)	Package Width	Package Length	Output Configuration	Voltage - Input (Max)	Topology	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Current - Output	Output Type	Number of Outputs	Voltage - Output (Min/Fixed)	Function	Voltage - Output (Max)
Analog Devices Inc./Maxim Integrated LTC1265CS-5#PBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Fixed	1	5 V	Step-Down Step-Up/Step-Down
Analog Devices Inc./Maxim Integrated LTC1265CS#TRPBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Adjustable	1	1.25 V	Step-Down Step-Up/Step-Down	13 V
Analog Devices Inc./Maxim Integrated LTC1265CS-5#TRPBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Fixed	1	5 V	Step-Down Step-Up/Step-Down
Analog Devices Inc./Maxim Integrated LTC1265IS#TRPBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	-40 °C	85 °C	1.2 A	Adjustable	1	1.25 V	Step-Down Step-Up/Step-Down	13 V
Analog Devices Inc./Maxim Integrated LTC1265IS#PBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	-40 °C	85 °C	1.2 A	Adjustable	1	1.25 V	Step-Down Step-Up/Step-Down	13 V
Analog Devices Inc./Maxim Integrated LTC1265CS-3.3#PBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Fixed	1	3.3 V	Step-Down Step-Up/Step-Down
Analog Devices Inc./Maxim Integrated LTC1265CS#PBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Adjustable	1	1.25 V	Step-Down Step-Up/Step-Down	13 V
Analog Devices Inc./Maxim Integrated LTC1265CS-3.3#TRPBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Fixed	1	3.3 V	Step-Down Step-Up/Step-Down
Analog Devices Inc./Maxim Integrated LTC1265IS#PBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	-40 °C	85 °C	1.2 A	Adjustable	1	1.25 V	Step-Down Step-Up/Step-Down	13 V
Analog Devices Inc./Maxim Integrated LTC1265CS-3.3#PBF	14-SO 14-SOIC	No	4 V	700 kHz	3.9 mm	0.154 in	Negative Positive Positive or Negative	13 V	Buck Buck-Boost SEPIC	Surface Mount	0 °C	70 °C	1.2 A	Fixed	1	3.3 V	Step-Down Step-Up/Step-Down

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC1265CS-3.3#PBF | Datasheet

R245 Reliability Data