Data Sheet

LT8641A

analog.com

Rev 0

34 of 35

ORDERING GUIDE

Table 5. Ordering Guide

LEAD FREE FINISH

TAPE AND REEL

PART

MARKING*

PACKAGE DESCRIPTION

TEMPERATURE

RANGE

LT8641ARUDCM#PBF

LT8641ARUDCM#TRPBF

LHTC

18-Lead (3mm × 4mm)

Plastic QFN

–40°C to 150°C

AUTOMOTIVE PRODUCTS**

LT8641ARUDCM#WPBF LT8641ARUDCM#WTRPBF

LHTC

18-Lead (3mm × 4mm)

Plastic QFN

–40°C to 150°C

Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified

by a label on the shipping container.

Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with

#TRMPBF suffix.

**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements

of automotive applications. These models are designated with a #W suffix. Only the automotive grade products

shown are available for use in automotive applications. Contact your local Analog Devices account representative

for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.

RELATED PARTS

Table 6. Related Parts

PART

DESCRIPTION

COMMENTS

LT8641

65V, 3.5A Synchronous Step-Down Silent Switcher with 2.5μA Quiescent

Current

VIN(MIN)= 3V, VIN(MAX)= 65V, VOUT(MIN)= 0.8V, IQ= 2.5μA, ISD < 1μA,

3mm × 4mm QFN-18

LT8640A 42V, 5A/8A Peak Synchronous Step-Down Silent Switcher with 2.5μA

Quiescent Current

VIN(MIN)=3.4V,VIN(MAX)=42V,VOUT(MIN)=0.97V, IQ=2.5μA, ISD <

1μA, 3mm × 4mm QFN-18

LT8645S/

LT8646S

65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5μA Quiescent

Current

VIN(MIN)=3.4V,VIN(MAX)=65V,VOUT(MIN)=0.97V, IQ=2.5μA, ISD <

1μA, 6mm × 4mm LQFN-32

LT8618

High Efficiency 65V/100mA Synchronous Bucks

VIN(MIN)=3.4V,VIN(MAX)=65V,VOUT(MIN)=0.778V, IQ=2.5μA, ISD =

1μA, 2mm × 2mm LQFN-12, 3mm × 2mm DFN-10

LT8620

65V, 2A, 94% Efficiency, 2.2MHz Synchronous MicroPower Step-Down

DC/DC Converter with IQ = 2.5µA

VIN(MIN)=3.4V,VIN(MAX)=65V,VOUT(MIN)=0.97V,IQ =2.5μA, ISD <

1μA, MSOP-16E, 3mm × 5mm QFN-24

LT8608/

LT8608B

42V, 1.5A Synchronous Step-Down Regulator with 2.5μA Quiescent

Current

VIN(MIN)=3.2V,VIN(MAX)=42V,VOUT(MIN)=0.778V, IQ=2.5μA, ISD =

1μA, MSOP-10E, 2mm × 2mm DFN-8

LT8609/

LT8609A

42V, 3A, 94% Efficiency, 2.2MHz Synchronous MicroPower Step-Down

DC/DC Converter with IQ = 2.5µA

VIN(MIN)= 3V, VIN(MAX)= 42V, VOUT(MIN)= 0.8V, IQ = 2.5μA, ISD < 1μA,

MSOP-10E, 3mm x 3mm DFN-10