LTC3621 datasheet(20/20 Pages) AD

20 / 20 page

LTC3644/LTC3644-2

Rev. 0

For more information www.analog.com

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ANALOG DEVICES, INC. 2021

03/21

www.analog.com

RELATED PARTS

TYPICAL APPLICATION

0.85A/2.5A Series Output 1MHz Step-Down Regulator

PART NUMBER

DESCRIPTION

COMMENTS

LTC3621/

LTC3621-2

1A, 17V, 1MHz/2.25MHz, Synchronous

Step-Down Regulator

95% Efficiency, VIN: 2.7V to 17V, VOUT(MIN) = 0.6V, IQ = 3.5µA, ISD < 1µA,

2mm × 3mm DFN-6, MSOP-8E Packages

LTC3600

1.5A, 15V, 4MHz Synchronous Rail-to-Rail Single

Resistor Step-Down Regulator

95% Efficiency, VIN: 4V to 15V, VOUT(MIN) = 0V, IQ = 700µA, ISD < 1µA,

3mm × 3mm DFN-12, MSOP-12E Packages

LTC3601

15V, 1.5A (IOUT) 4MHz Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN: 4.5V to 15V, VOUT(MIN) = 0.6V, IQ = 300µA, ISD < 1µA,

4mm × 4mm QFN-20, MSOP-16E Packages

LTC3603

15V, 2.5A (IOUT) 3MHz Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN: 4.5V to 15V, VOUT(MIN) = 0.6V, IQ = 75µA, ISD < 1µA,

4mm × 4mm QFN-20, MSOP-16E Packages

LTC3633A

20V, Dual 3A (IOUT) 4MHz Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN: 3.6V to 20V, VOUT(MIN) = 0.6V, IQ = 500µA, ISD < 15µA,

4mm × 5mm QFN-28, TSSOP-28E Packages. A Version Up to 20VIN

LTC3605A

20V, 5A (IOUT) 4MHz Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN: 4V to 20V, VOUT(MIN) = 0.6V, IQ = 2mA, ISD < 15µA,

4mm × 4mm QFN-24 Package. A Version Up to 20VIN

LTC3604

15V, 2.5A (IOUT) 4MHz Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN: 3.6V to 15V, VOUT(MIN) = 0.6V, IQ = 300µA, ISD < 14µA,

3mm × 3mm QFN-16, MSOP-16E Packages

LTC3624/

LTC3624-2

2A, 17V, 1MHz/2.25MHz Synchronous Step-Down

Regulator

95% Efficiency, VIN: 2.7V to 17V, VOUT(MIN) = 0.6V, IQ = 3.5µA, ISD < 1µA,

3mm × 3mm DFN-8, MSOP-12E Packages

LTC3622/

LTC3622-2/

LTC3622-23/5

Dual 1A, 17V 1MHz/2.25MHz Synchronous Step-Down

Regulator

95% Efficiency, VIN: 2.7V to 17V, VOUT(MIN) = 0.6V, IQ = 5µA, ISD ≤ 1µA,

3mm × 4mm DFN-14, MSOP-16E Packages

LTC7124

Dual Channel 3.5A, 17V Monolithic Synchronous

Step-Down Regulator

95% Efficiency, VIN: 3.1V to 17V, VOUT(MIN) = 0.6V, IQ < 8μA, ISD < 1μA,

3mm × 5mm QFN-24

CIN

22µF

×2

CVCC

4.7µF

CFF1

22pF

COUT1

47µF

×2

CFF2

22pF

COUT2

47µF

×2

619k

84.5k

619k

137k

3.3µH

2.2µH

10k

MODE/SYNC

GND

VIN

12V

LTC3644

VIN1

VIN2

SVIN

RUN3

RUN4

RUN1

RUN2

PGOOD2

PGOOD3

PGOOD4

PGOOD1

INTVCC

PHASE

FB3

SW1

SW2

SW3

SW4

VOUT4

3.3V AT 2.5A

VOUT1

5V AT 0.85A

+IVIN3-4

FB1

FB2

FB4

VIN3

VIN4

3644 TA02

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