LTC3246
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3246

Wide VIN Range Buck-Boost Charge Pump with Watchdog Timer

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $3.89
Features
  • 2.7V – 38V Operating Range (42V Abs Max)
  • IQ = 20μA Operating, 1.5μA in Shutdown
  • Multi-Mode Buck-Boost Charge Pump (2:1, 1:1, 1:2) with Automatic Mode Switching
  • 12V to 5V Efficiency = 81%
  • IOUT Up to 500mA
  • VOUT: Fixed 3.3V, 5V or Adjustable (2.5V to 5V)
  • Ultralow EMI Emissions
  • Engineered for Diagnostic Coverage in ISO 26262 Systems
  • Overtemperature, Overvoltage and Short Circuit Protection
  • Operating Junction Temperature: 150°C Max
  • POR/Watchdog Controller w/External Timing Control
  • Thermally Enhanced 16-Pin MSOP Package
Additional Details
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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.

Applications

  • Automotive ECU/CAN Transceiver Supplies
  • Industrial/Telecom Housekeeping Supplies
  • Low Power 12V to 5V Conversion
Part Models 8
1ku List Price Starting From $3.89

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3246EMSE#PBF
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LTC3246EMSE#TRPBF
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LTC3246HMSE#PBf
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LTC3246HMSE#TRPBF
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LTC3246IMSE#PBF
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LTC3246IMSE#TRPBF
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LTC3246MPMSE#PBF
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LTC3246MPMSE#TRPBF
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Product Lifecycle

PCN

Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3246EMSE#PBF

PRODUCTION

LTC3246EMSE#TRPBF

PRODUCTION

LTC3246HMSE#PBf

PRODUCTION

LTC3246HMSE#TRPBF

PRODUCTION

LTC3246IMSE#PBF

PRODUCTION

LTC3246IMSE#TRPBF

PRODUCTION

LTC3246MPMSE#PBF

PRODUCTION

LTC3246MPMSE#TRPBF

PRODUCTION

Apr 11, 2019

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

LTC3246EMSE#PBF

PRODUCTION

LTC3246EMSE#TRPBF

PRODUCTION

LTC3246HMSE#PBf

PRODUCTION

LTC3246HMSE#TRPBF

PRODUCTION

LTC3246IMSE#PBF

PRODUCTION

LTC3246IMSE#TRPBF

PRODUCTION

LTC3246MPMSE#PBF

PRODUCTION

LTC3246MPMSE#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0132

arrow down

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3246EMSE#PBF

PRODUCTION

LTC3246EMSE#TRPBF

PRODUCTION

LTC3246HMSE#PBf

PRODUCTION

LTC3246HMSE#TRPBF

PRODUCTION

LTC3246IMSE#PBF

PRODUCTION

LTC3246IMSE#TRPBF

PRODUCTION

LTC3246MPMSE#PBF

PRODUCTION

LTC3246MPMSE#TRPBF

PRODUCTION

Apr 11, 2019

- 19_0067

arrow down

Notification of Wafer Fab Location Change for 0.35 BCD Process

LTC3246EMSE#PBF

PRODUCTION

LTC3246EMSE#TRPBF

PRODUCTION

LTC3246HMSE#PBf

PRODUCTION

LTC3246HMSE#TRPBF

PRODUCTION

LTC3246IMSE#PBF

PRODUCTION

LTC3246IMSE#TRPBF

PRODUCTION

LTC3246MPMSE#PBF

PRODUCTION

LTC3246MPMSE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2466A

LTC3246 Demo Board | Wide VIN Range Buck-Boost Charge Pump with Watchdog Timer

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DC2466A

LTC3246 Demo Board | Wide VIN Range Buck-Boost Charge Pump with Watchdog Timer

LTC3246 Demo Board | Wide VIN Range Buck-Boost Charge Pump with Watchdog Timer

Product Detail

Demonstration circuit 2466A is a buck-boost 500mA charge pump with pin selectable output voltages and includes a watchdog timer featuring the LTC3246EMSE. The LTC3246 operates with a wide input voltage range from 2.7V to 38V and is engineered for diagnostic coverage for ISO 262262 compliant systems. The wide VIN operating range will allow the LTC3246 to provide up to 500mA sufficiently during an automotive cold crank.

 

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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