LTC3246 - Wide VIN Range Buck-Boost Charge Pump with Watchdog Timer
Datasheet Documentation
Press Release


Typical Application

LTC3246 Typical Application
LTC3246 Typical Application


The LTC®3246 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.



LTC3246 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
LTC3246MPMSE#PBF MSOP 16 MP $8.86 $6.20
LTC3246IMSE#PBF MSOP 16 I $5.36 $3.75
LTC3246EMSE#PBF MSOP 16 E $4.64 $3.25
LTC3246HMSE#PBF MSOP 16 H $5.79 $4.05
LTC3246EMSE#TRPBF MSOP 16 E $4.70 $3.31
LTC3246HMSE#TRPBF MSOP 16 H $5.85 $4.11
LTC3246MPMSE#TRPBF MSOP 16 MP $8.92 $6.26
LTC3246IMSE#TRPBF MSOP 16 I $5.42 $3.81
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2466A LTC3246 Demo Board | Wide VIN Range Buck-Boost Charge Pump with Watchdog Timer Contact Factory