LTC3245EMSE#PBF

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Analog Devices Inc./Maxim Integrated

WIDE VINRANGE, LOW NOISE, 250MA BUCK-BOOST CHARGE PUMP

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LTC3245EMSE#PBF

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Analog Devices Inc./Maxim Integrated

WIDE VINRANGE, LOW NOISE, 250MA BUCK-BOOST CHARGE PUMP

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3245 Series

The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio to optimize efficiency as input voltage and load conditions vary. No inductors are required.The unique constant frequency architecture provides a lower noise output than conventional charge pump regulators. To optimize efficiency at the expense of slightly higher output ripple, the device has pin selectable Burst Mode operation.Low operating current (20μA with no load, 4μA in shutdown) and low external parts count (three small ceramic capacitors) make the LTC3245 ideally suited for low power, space constrained automotive/industrial applications. The device is short-circuit and overtemperature protected, and is available in thermally enhanced 12-pin MSOP and low profile 3mm × 4mm 12-pin DFN packages.APPLICATIONSAutomotive ECU/CAN Transceiver SuppliesIndustrial Housekeeping SuppliesLow Power 12V to 5V Conversion

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3245EMSE#PBF

Current - Output	250 mA
Frequency - Switching	450 kHz
Function	Step-Up, Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable (Programmable)
Package Features	Exposed Pad
Package Length	0.118 in
Package Name	12-MSOP-EP, 12-TSSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	Charge Pump
Voltage - Input (Max)	38 V
Voltage - Input (Min)	2.7 V
Voltage - Output (Fixed Options)	3.3V, 5V
Voltage - Output (Max)	5 V
Voltage - Output (Min)	2.5 V

LTC3245 Series

Part	Operating Temperature (Min)	Operating Temperature (Max)	Output Configuration	Package Length	Package Features	Package Name	Package Width	Synchronous Rectifier	Voltage - Input (Min)	Voltage - Input (Max)	Voltage - Output (Fixed Options)	Voltage - Output (Min)	Output Type	Topology	Function	Current - Output	Frequency - Switching	Mounting Type	Voltage - Output (Max)	Number of Outputs	Package / Case	Total Output Count	Non-Isolated Output Count	Supplied Contents	Board Type	Voltage - Input (Maximum)	Voltage - Input (Minimum)	Utilized IC / Part	Contents	Regulator Topology	Main Purpose	Voltage - Output
Analog Devices Inc./Maxim Integrated LTC3245HMSE#TRPBF	-40 °C	150 °C	Positive	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1
Analog Devices Inc./Maxim Integrated LTC3245EDE#PBF	-40 °C	125 °C	Positive	4 mm		12-DFN	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3245MPMSE#TRPBF	-55 °C	150 °C	Positive	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1
Analog Devices Inc./Maxim Integrated LTC3245IMSE#TRPBF	-40 °C	125 °C	Positive	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1
Analog Devices Inc./Maxim Integrated LTC3245EDE#TRPBF	-40 °C	125 °C	Positive	4 mm		12-DFN	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3245EMSE#PBF	-40 °C	125 °C	Positive	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1
Analog Devices Inc./Maxim Integrated LTC3245IDE#TRPBF	-40 °C	125 °C	Positive	4 mm		12-DFN	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1	12-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3245MPMSE#PBF	-55 °C	150 °C	Positive	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1
Analog Devices Inc./Maxim Integrated DC1802A													Non-Isolated			250 mA	450 kHz					2	2 count	Board(s)	Fully Populated	38 V	2.7 V	LTC3245	Board	Buck-Boost	DC/DC Step Up or Down	3.3 V 5 VDC
Analog Devices Inc./Maxim Integrated LTC3245IMSE#PBF	-40 °C	125 °C	Positive	0.118 in	Exposed Pad	12-MSOP-EP 12-TSSOP	3 mm	No	2.7 V	38 V	3.3V 5V	2.5 V	Adjustable (Programmable)	Charge Pump	Step-Down Step-Up	250 mA	450 kHz	Surface Mount	5 V	1

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3245EMSE#PBF | Datasheet

R526 Reliability Data