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3692

Monolithic Dual Tracking 3.5A Step-Down Switching Regulator

Linear Technology 

LT3692

TYPICAL APPLICATION

1.2MHz, 12V to 3.3V at 3A, 5V at 3A

VIN

12V

4.7µF

VOUT1

3.3V 3A

1.2MHz

100k

PG1

0.22µF

2.2µH

47µF

8.06k

100pF 24.9k

0.1µF

330pF

33pF

VIN1

SHDN1

BST1

VIN2

SHDN2

BST2

SW1

SW2

IND1

IND2

LT3692

VOUT1

VOUT2

FB1

FB2

CMPI1

CMPI2

CMPO1 CMPO2

SS1

SS2

ILIM1

ILIM2

VC1

VC2

RT/SYNC CLKOUT

DIV

TJ

GND

4.7µF

2.2µH

42.2k

0.22µF

100pF

8.06k

CLOCKOUT

1.2MHz

33pF

330pF

120k

24.9k

42.2k

0.1µF

49.9k 30.1k

22µF

VOUT2

5V 3A

1.2MHz

100k

PG

0.1µF

120k

3692 TA09

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DESCRIPTION

COMMENTS

36V, Triple 2.4A, 1.4A and 1.4A (IOUT), 2.5MHz, High Efficiency Step-Down VIN: 4V to 36V, VOUT(MIN) = 0.8V, IQ = 7mA, ISD = 1µA,

DC/DC Converter with LDO Controller

(5mm × 7mm) QFN-38

36V with Transient Protection to 40V, Dual 1.4A (IOUT), 3MHz, High Efficiency VIN: 3.7V to 37V, VOUT(MIN) = 0.8V, IQ = 4.6mA, ISD = 1µA,

Step-Down DC/DC Converter

(4mm × 4mm) QFN-24, TSSOP-16E

36V, 3A, 2.4MHz High Efficiency Micropower Step-Down DC/DC Converter

VIN: 3.6V to 36V, VOUT(MIN) = 0.8V, IQ = 75µA, ISD < 1µA,

(3mm × 3mm) DFN-10, MSOP-10E

36V, 3A, 2.4MHz High Efficiency Step-Down DC/DC Converter

VIN: 3.6V to 36V, VOUT(MIN) = 0.8V, IQ = 1.3mA, ISD < 1µA,

(3mm × 3mm) DFN-10, MSOP-10E

36V with Transient Protection to 60V, 2A (IOUT), 2.4MHz, High Efficiency

Step-Down DC/DC Converter with Burst Mode® Operation

58V with Transient Protection to 80V, 2A (IOUT), 2.4MHz, High Efficiency

Step-Down DC/DC Converter with Burst Mode Operation

38V, 1.2A (IOUT), 2MHz, High Efficiency Step-Down DC/DC Converter with

Only 2.8µA of Quiescent Current

VIN: 3.6V to 38V, Transients to 60V, VOUT(MIN) = 0.78V,

IQ = 70µA, ISD < 1µA, (3mm × 3mm) DFN-10, MSOP-10E

VIN: 3.6V to 58V, Transients to 80V, VOUT(MIN) = 0.79V,

IQ = 75µA, ISD < 1µA, (3mm × 4mm) DFN-16, MSOP-16E

VIN: 4.2V to 38V, VOUT(MIN) = 1.2V, IQ = 2.8µA, ISD < 1µA,

(3mm × 3mm) DFN-10, MSOP-10E

55V, 1.2A (IOUT), 2MHz, High Efficiency Step-Down DC/DC Converter with

Only 2.8µA of Quiescent Current

VIN: 4.2V to 55V, VOUT(MIN) = 1.2V, IQ = 2.8µA, ISD < 1µA,

(3mm × 3mm) DFN-10, MSOP-10E

36 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

3692f

LT 0111 • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2011

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