LT8619 - 60V, 1.2A Synchronous Monolithic Buck Regulator with 6μA Quiescent Current
Datasheet Documentation


Typical Application

LT8619 Typical Application
LT8619 Typical Application


The LT®8619 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 6μA of quiescent current. The LT8619 can deliver 1.2A of continuous current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode® operation enables high efficiency down to very low output currents while keeping the output ripple to 10mVP-P. A SYNC pin allows forced continuous mode operation synchronized to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8619, reducing the input supply current to below 0.6μA. The PG flag signals when VOUT is within ±7.5% of the programmed output voltage. The LT8619 is available in a small 16-lead MSOP and 10-lead 3mm × 3mm DFN packages with exposed pad for low thermal resistance.


3x3 DFN-10,MS-16E

LT8619 Package Drawing
LT8619 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
LT8619EMSE#TRPBF MSOP 16 E $3.98 $2.81
LT8619IDD#TRPBF DFN 10 I $4.23 $2.98
LT8619EMSE-5#PBF MSOP 16 E $3.92 $2.75
LT8619IDD#PBF DFN 10 I $4.17 $2.92
LT8619EMSE-5#TRPBF MSOP 16 E $3.98 $2.81
LT8619EMSE#PBF MSOP 16 E $3.92 $2.75
LT8619IMSE#PBF MSOP 16 I $4.33 $3.03
LT8619EDD#PBF DFN 10 E $3.79 $2.65
LT8619IMSE-5#PBF MSOP 16 I $4.33 $3.03
LT8619IMSE-5#TRPBF MSOP 16 I $4.39 $3.09
LT8619EDD#TRPBF DFN 10 E $3.85 $2.71
LT8619IMSE#TRPBF MSOP 16 I $4.39 $3.09
* 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.