LTC1981

PRODUCTION

LTC1981

Single and Dual Micropower High Side Switch Controllers in SOT-23

PRODUCTION

Single High Side Switch Controller slide

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1ku List Price Starting From $1.51

Features

No External Components Required
Internal Voltage Triplers Produce High Side Gate Drive for Logic Level FETs
Ultralow Power:
- 10µA Per Driver ON Current (LTC1982)
- 20µA ON Current (LTC1981)
- <1µA Shutdown Current
V_CC Range: 1.8V to 5V
Gate Drive Outputs Driven to Ground During Shutdown
Gate Drive Outputs Internally Clamped to 7.5V Max
“Gate Drive Ready” Output (LTC1981)
Ultrasmall Application Circuit
5-Pin SOT-23 Package (LTC1981)
6-Pin SOT-23 Package (LTC1982)

Additional Details

The LTC1981/LTC1982 are low-power, self-contained N-channel MOSFET drivers. An internal voltage tripler allows gates to be driven without the use of any external components. Internal regulation circuitry allows quiescent current to drop to 10µA per driver (20µA for LTC1981) once the gates are charged.

Low quiescent current and low shutdown current (under 1µA) make these parts ideal for battery and other power constrained systems. The wide input voltage range accommodates a variety of battery/input configurations.

Gate drive is internally clamped to 7.5V providing protection to the external MOSFET gate. The MOSFETs can be driven in either high side or low side mode.

The LTC1981 single driver version also includes a gate drive ready pin and twice the drive current capacity of the dual driver LTC1982.

The LTC1981 is available in a 5-pin SOT-23. The LTC1982 is available in a 6-pin SOT-23.

Applications

Cellular Telephones
Portable POS Terminal
Handheld Battery Powered Equipment

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

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FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $1.51

Technical Documents 2

LTC1981/LTC1982: Single and Dual Micropower High Side Switch Controllers in SOT-23 Data Sheet 10/03/2017

R421 Reliability Data 03/23/2018

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC1981ES5#TRMPBF	5-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC1981ES5#TRPBF	5-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC1981ES5#TRMPBF
Pin/Package Drawing
5-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC1981ES5#TRPBF
Pin/Package Drawing
5-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTspice 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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.