LTC3246EMSE#PBF

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Analog Devices Inc./Maxim Integrated

WIDE VINRANGE BUCK-BOOST CHARGE PUMP WITH WATCHDOG TIMER

LTC3246EMSE#PBF

Active

Analog Devices Inc./Maxim Integrated

WIDE VINRANGE BUCK-BOOST CHARGE PUMP WITH WATCHDOG TIMER

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3246 Series

The LTC3246 is a switched capacitor buck-boost DC/DC converter with integrated watchdog timer. The device produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. Switched capacitor fractional conversion is used 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 LTC3246’s reset time and watchdog timeout may be set without external components, or adjusted using external capacitors. A windowed watchdog function is used for high reliability applications. The reset input can be used for additional supply monitoring or be configured as a pushbutton reset.Low operating current (20μA without load, 1.5μA in shutdown) and low external parts count make the LTC3246 ideally suited for low power, space constrained automotive/ industrial applications. The device is short-circuit and overtemperature protected and is available in a thermally enhanced 16-pin MSOP package.ApplicationsAutomotive ECU/CAN Transceiver SuppliesIndustrial/Telecom Housekeeping SuppliesLow Power 12V to 5V Conversion

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3246EMSE#PBF

Current - Output	500 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	16-TFSOP, 16-MSOP-EP
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

LTC3246 Series

Part	Number of Outputs	Voltage - Output (Fixed Options)	Voltage - Output (Min)	Package Name	Package Width	Package Features	Package Length	Output Configuration	Output Type	Voltage - Output (Max)	Voltage - Input (Min)	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Function	Topology	Current - Output	Synchronous Rectifier	Frequency - Switching	Voltage - Input (Max)
Analog Devices Inc./Maxim Integrated LTC3246MPMSE#TRPBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-55 °C	125 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246HMSE#PBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-40 °C	150 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246EMSE#TRPBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-40 °C	125 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246IMSE#TRPBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-40 °C	125 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246MPMSE#PBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-55 °C	125 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246HMSE#TRPBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-40 °C	150 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246IMSE#PBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-40 °C	125 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V
Analog Devices Inc./Maxim Integrated LTC3246EMSE#PBF	1	3.3V 5V	2.5 V	16-MSOP-EP 16-TFSOP	3 mm	Exposed Pad	0.118 in	Positive	Adjustable (Programmable)	5 V	2.7 V	Surface Mount	-40 °C	125 °C	Step-Down Step-Up	Charge Pump	500 mA	No	450 kHz	38 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3246EMSE#PBF | Datasheet