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LTC1982 - Single and Dual Micropower High Side Switch Controllers in SOT-23

Datasheet

Documentation

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)

Typical Application

Description

The LTC®1981/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 10mA per driver (20mA for LTC1981) once the gates are charged.

Low quiescent current and low shutdown current (under 1mA) 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.

Packaging

SOT-23

Order Info

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)^*
LTC1982ES6#PBF	SOT	6	E	$2.14
LTC1982ES6#TRMPBF	SOT	6	E	$2.14	$1.55
LTC1982ES6#TRPBF	SOT	6	E	$2.14	$1.50
LTC1982ES6	SOT	6	E	$4.28
LTC1982ES6#TR	SOT	6	E	$4.28	$3.00
LTC1982ES6#TRM	SOT	6	E	$4.28	$3.10

^* 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.