LTC1174CN8-5#PBF

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Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY STEP-DOWN AND INVERTING DC/DC CONVERTER

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LTC1174CN8-5#PBF

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Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY STEP-DOWN AND INVERTING DC/DC CONVERTER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC1174 Series

The LTC1174 is a simple current mode DC/DC converter ideally suited for 9V to 5V, 5V to 3.3V or 5V to –5V operation. With an internal 0.9Ω switch (at a supply voltage of 9V), the LTC1174 requires only four external components to construct a complete high efficiency DC/DC converter.Under a no load condition the LTC1174 draws only 130μA. In shutdown, it draws a mere 1μA making this converter ideal for current sensitive applications. In dropout, the internal P-channel MOSFET switch is turned on continuously allowing the user to maximize the life of the battery source.The maximum inductor current of the LTC1174 family is pin selectable to either 340mA or 600mA, optimizing efficiency for a wide range of applications. Operation up to 200kHz permits the use of small surface mount inductors and capacitors.For applications requiring higher output current or ultrahigh efficiency, see the LTC1148 data sheet.ApplicationsDistributed Power SystemsStep-Down ConvertersInverting ConvertersMemory Backup SupplyPortable InstrumentsBattery-Powered Equipment

Technical Specifications

Parameters and characteristics for this part

Specification	LTC1174CN8-5#PBF

Current - Output (Max)	600 mA
Current - Output (Min)	340 mA
Frequency - Switching	200 kHz
Function	Step-Up/Step-Down, Step-Down, Step-Up
Mounting Type	Through Hole
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	0.3 in
Package Name	8-DIP, 8-PDIP
Package Width	7.62 mm
Synchronous Rectifier	No
Topology	Buck, Buck-Boost
Voltage - Input (Max)	13.5 V
Voltage - Input (Min)	4 V
Voltage - Output (Min/Fixed)	5 V

LTC1174 Series

Part	Package Name	Frequency - Switching	Topology	Package Length	Package Width	Output Type	Operating Temperature (Max)	Mounting Type	Function	Voltage - Input (Min)	Number of Outputs	Current - Output (Max)	Current - Output (Min)	Synchronous Rectifier	Voltage - Output (Min/Fixed)	Output Configuration	Voltage - Input (Max)	Voltage - Output (Max)
Analog Devices Inc./Maxim Integrated LTC1174CS8-3.3#PBF	8-SO 8-SOIC	200 kHz	Buck Buck-Boost	0.154 in	3.9 mm	Fixed	70 °C	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	3.3 V	Negative Positive Positive or Negative	13.5 V
Analog Devices Inc./Maxim Integrated LTC1174HVCN8-5#PBF	8-DIP 8-PDIP	200 kHz	Buck Buck-Boost	0.3 in	7.62 mm	Fixed	70 °C	Through Hole	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	5 V	Negative Positive Positive or Negative	18.5 V
Analog Devices Inc./Maxim Integrated LTC1174HVCS8-3.3#PBF	8-SO 8-SOIC	200 kHz	Buck Buck-Boost	0.154 in	3.9 mm	Fixed	70 °C	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	3.3 V	Negative Positive Positive or Negative	18.5 V
Analog Devices Inc./Maxim Integrated LTC1174CN8-3.3#PBF	8-DIP 8-PDIP	200 kHz	Buck Buck-Boost	0.3 in	7.62 mm	Fixed	70 °C	Through Hole	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	3.3 V	Negative Positive Positive or Negative	13.5 V
Analog Devices Inc./Maxim Integrated LTC1174CN8-5#PBF	8-DIP 8-PDIP	200 kHz	Buck Buck-Boost	0.3 in	7.62 mm	Fixed	70 °C	Through Hole	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	5 V	Negative Positive Positive or Negative	13.5 V
Analog Devices Inc./Maxim Integrated LTC1174CS8#PBF	8-SO 8-SOIC	200 kHz	Buck Buck-Boost	0.154 in	3.9 mm	Adjustable	70 °C	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	1.25 V	Negative Positive Positive or Negative	13.5 V	13 V
Analog Devices Inc./Maxim Integrated LTC1174HVCN8#PBF	8-DIP 8-PDIP	200 kHz	Buck Buck-Boost	0.3 in	7.62 mm	Adjustable	70 °C	Through Hole	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	1.25 V	Negative Positive Positive or Negative	18.5 V	18 V
Analog Devices Inc./Maxim Integrated LTC1174HVCN8-5#PBF	8-DIP 8-PDIP	200 kHz	Buck Buck-Boost	0.3 in	7.62 mm	Fixed	70 °C	Through Hole	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	5 V	Negative Positive Positive or Negative	18.5 V
Analog Devices Inc./Maxim Integrated LTC1174HVCS8-3.3#TRPBF	8-SO 8-SOIC	200 kHz	Buck Buck-Boost	0.154 in	3.9 mm	Fixed	70 °C	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	3.3 V	Negative Positive Positive or Negative	18.5 V
Analog Devices Inc./Maxim Integrated LTC1174HVCS8-5#PBF	8-SO 8-SOIC	200 kHz	Buck Buck-Boost	0.154 in	3.9 mm	Fixed	70 °C	Surface Mount	Step-Down Step-Up Step-Up/Step-Down	4 V	1	600 mA	340 mA	No	5 V	Negative Positive Positive or Negative	18.5 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Package Drawing - 8-Lead PDIP (Narrow 0.3 Inch)

R245 Reliability Data

LTC1174CN8-5#PBF | Datasheet