LT8640 datasheet(32/32 Pages) AD

32 / 32 page

LT8640S/LT8643S/

LT8640SA/LT8643SA

Rev. D

For more information www.analog.com

 ANALOG DEVICES, INC. 2017-2024

08/24

www.analog.com

 ANALOG DEVICES, INC. 2017-2024

08/24

www.analog.com

RELATED PARTS

TYPICAL APPLICATIONS

2MHz 1.8V, 6A Step-Down Converter

PART

DESCRIPTION

COMMENTS

LT8640/

LT8640-1

42V, 5A, 96% Efficiency, 3MHz Synchronous MicroPower Step-Down

DC/DC Converter with IQ = 2.5μA

VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.99V, IQ = 2.5µA,

ISD < 1µA, 3mm × 4mm QFN-18

LT8645S

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

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

ISD < 1µA, 4mm × 6mm LQFN-32

LT8641

65V, 3.5A, 95% Efficiency, 3MHz Synchronous MicroPower Step-Down

DC/DC Converter with IQ = 2.5μA

VIN(MIN) = 3V, VIN(MAX) = 65V, VOUT(MIN) = 0.81V, IQ = 2.5µA,

ISD < 1µA, 3mm × 4mm QFN-18

LT8609

42V, 2A, 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

LT8610A/

LT8610AB

42V, 3.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-

Down DC/DC Converter with IQ = 2.5µA

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

ISD < 1µA, MSOP-16E

LT8610AC

42V, 3.5A, 96% 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-16E

LT8610

42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-

Down DC/DC Converter with IQ = 2.5µA

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

ISD < 1µA, MSOP-16E

LT8611

42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-

Down DC/DC Converter with IQ = 2.5µA and Input/Output Current

Limit/Monitor

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

ISD < 1µA, 3mm × 5mm QFN-24

LT8616

42V, Dual 2.5A + 1.5A, 95% Efficiency, 2.2MHz Synchronous

MicroPower Step-Down DC/DC Converter with IQ = 5µA

VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.8V, IQ = 5µA,

ISD < 1µA, TSSOP-28E, 3mm × 6mm QFN-28

LT8620

65V, 2.5A, 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

LT8614

42V, 4A, 96% Efficiency, 2.2MHz Synchronous Silent Switcher Step-

Down DC/DC Converter with IQ = 2.5µA

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

ISD < 1µA, 3mm × 4mm QFN18

LT8612

42V, 6A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-Down

DC/DC Converter with IQ = 2.5µA

VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 3.0µA,

ISD < 1µA, 3mm × 6mm QFN-28

LT8613

42V, 6A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-Down

DC/DC Converter with Current Limiting

VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 3.0µA,

ISD < 1µA, 3mm × 6mm QFN-28

LT8602

42V, Quad Output (2.5A + 1.5A + 1.5A + 1.5A) 95% Efficiency, 2.2MHz

Synchronous MicroPower Step-Down DC/DC Converter with IQ = 25µA

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

ISD < 1µA, 6mm × 6mm QFN-40

1µF

EXTERNAL

SOURCE >3.1V

OR GND

LT8640S/

LT8640SA

8640S TA02

VIN

EN/UV

BIAS

GND

10pF

100µF

1210

X5R/X7R

866k

VOUT

1.8V

4.7µF

VIN

3.4V TO 22V

(42V TRANSIENT)

17.8k

1µH

fSW = 2MHz

L: XEL6030

PINS NOT USED IN THIS CIRCUIT:

BST, CLKOUT, INTVCC,

PG, SYNC/MODE, TR/SS

LT8640 Datasheet(PDF) 32 Page - Analog Devices

LT8640 Datasheet(HTML) 32 Page - Analog Devices

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