LTC3619BEDD(RevA) 查看數據表（PDF） - Linear Technology

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LTC3619BEDD
(Rev.:RevA)

400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit

Linear Technology 

LTC3619B

Typical Applications

Dual 400mA/800mA Buck Converter, ILIM = 500mA

VIN

3.3V TO 5.5V

C1

10µF

RUN2 VIN RUN1

VOUT2

3.3V AT

800mA

+

L2

PGOOD2 PGOOD1

L1

1.5µH

LTC3619B

3.3µH

SW2

SW1

CF1, 22pF

R4

1150k

COUT2

2.2mF

s2

SuperCap

VFB2

R3 RLIM

255k

RLIM

110k

VFB1

GND

R1 R2

255k 511k

CLIM

1000pF

VOUT1

1.8V AT

400mA

COUT1

10µF

3619B TA02

C1, COUT1: AVX 08056D106KAT2A

COUT2: VISHAY 592D228X96R3X2T20H

L1: COILCRAFT LPS4012-332ML

L2: COILCRAFT LPS4012-152ML

Dual 400mA/800mA Buck Converter, ILIM = 475mA or Disabled

VIN

3.3V TO 5.5V

C1

10µF

RUN2 VIN RUN1

VOUT2

3.3V AT

800mA

+

L2

PGOOD2 PGOOD1

L1

1.5µH

LTC3619B

3.3µH

SW2

SW1

CF1, 22pF

R4

1150k

COUT2

2.2mF

s2

SuperCap

ILIM

DISABLE

VFB2

R3 RLIM

255k

RLIM

116k

VFB1

GND

R1 R2

255k 511k

CLIM

2200pF

VOUT1

1.8V AT

400mA

COUT1

10µF

3619B TA03

C1, COUT1: AVX 08056D106KAT2A

COUT2: VISHAY 592D228X96R3X2T20H

L1: COILCRAFT LPS4012-332ML

L2: COILCRAFT LPS4012-152ML

Related Parts

PART NUMBER

LTC3619

LTC3127

LTC3125

LTC3417A/

LTC3417A-2

LTC3407A/

LTC3407A-2

LTC3548/LTC3548-1/

LTC3548-2

LTC3546

DESCRIPTION

COMMENTS

Dual 400mA and 800mA IOUT, 2.25MHz,

Synchronous Step-Down DC/DC Converter

95% Efficiency, VIN(MIN) = 2.5V, VIN(MAX) = 5.5V, VOUT(MIN) = 0.6V,

IQ = 50µA, ISD < 1µA, MS10E, 3mm × 3mm DFN-10

1.2A IOUT, 1.6MHz, Synchronous Buck-Boost DC/DC 94% Efficiency, VIN(MIN) = 1.8V, VIN(MAX) = 5.5V, VOUT(MAX) = 5.25V,

Converter with Adjustable Input Current Limit

IQ = 18µA, ISD < 1µA, 3mm × 3mm DFN-MSOP10E

1.2A IOUT, 1.6MHz, Synchronous Boost DC/DC

Converter with Adjustable Input Current Limit

94% Efficiency, VIN(MIN) = 1.8V, VIN(MAX) = 5.5V, VOUT(MAX) = 5.25V,

IQ = 15µA, ISD < 1µA, 2mm × 3mm DFN-8

Dual 1.5A/1A, 4MHz, Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN(MIN) = 2.3V, VIN(MAX) = 5.5V, VOUT(MIN) = 0.8V,

IQ = 125µA, ISD = <1µA, TSSOP-16E, 3mm × 5mm DFN-16

Dual 600mA/600mA, 1.5MHz, Synchronous

Step-Down DC/DC Converter

95% Efficiency, VIN(MIN) = 2.5V, VIN(MAX) = 5.5V, VOUT(MIN) = 0.6V,

IQ = 40µA, ISD = <1µA, MS10E, 3mm × 3mm DFN-10

Dual 400mA and 800mA IOUT, 2.25MHz,

Synchronous Step-Down DC/DC Converter

95% Efficiency, VIN(MIN) = 2.5V, VIN(MAX) = 5.5V, VOUT(MIN) = 0.6V,

IQ = 40µA, ISD = <1µA, MS10E, 3mm × 3mm DFN-10

Dual 3A/1A, 4MHz, Synchronous Step-Down

DC/DC Converter

95% Efficiency, VIN(MIN) = 2.3V, VIN(MAX) = 5.5V, VOUT(MIN) = 0.6V,

IQ = 160µA, ISD = <1µA, 4mm × 5mm QFN-28

3619bfa

20 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

LT 0410 REV A • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2009

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