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LT3667 Datasheet(PDF) 34 Page - Linear Technology

Part # LT3667
Description  40V 400mA Step-Down Switching Regulator with Dual Fault Protected LDOs
PDF  34 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3667 Datasheet(HTML) 34 Page - Linear Technology

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LT3667
34
3667fb
For more information www.linear.com/LT3667
LINEAR TECHNOLOGY CORPORATION 2014
LT 1114 REV B • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LT3667
EN2/ILIM2
EN3/ILIM3
GND
IN3
LT3667
BOOST
SW
DA
FB1
BD
OUT3
FB3
3667 TA07
EN
IN1
UVLO1
RT
OUT2
f = 600kHz
FB2
*DERATE OUTPUT CURRENT AT HIGHER AMBIENT TEMPERATURES
AND INPUT VOLTAGES TO MAINTAIN JUNCTION TEMPERATURE
BELOW THE ABSOLUTE MAXIMUM
51mA*
IN2
C1
2.2µF
C2
0.22µF
D1
DFLS160
C8
22pF
L1
22µH
R1
931k
5V
400mA
3.3V*
200mA
R2
249k
R5
6.19k
C1-C7: X5R OR X7R
L1: CDRH4D22/HP
R3
499k
R4
158k
RT
174k
VIN*
6V TO 40V
C7
1µF
C6
1µF
C3
22µF
C9
47nF
C5
10µF
C4
10µF
5V, 3.3V and 51mA Regulator
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER
DESCRIPTION
COMMENTS
LT3500
36V (40VMAX), 2A (IOUT), 2.2MHz Step-Down Switching Regulator
with LDO Controller
VIN: 3V to 36V, VOUT(MIN) = 0.8V, IQ = 2.5mA, ISD < 12µA,
3mm × 3mm DFN-10, MSOP-16E
LT1939
25V, 2A (IOUT), 2.2MHz Step-Down Switching Regulator with LDO
Controller
VIN: 3V to 25V, VOUT(MIN) = 0.8V, IQ = 2.5mA, ISD < 12µA,
3mm × 3mm DFN-10, MSOP-16E
LT3694
36V (70VMAX), 2.6A (IOUT), 2.5MHz Step-Down Switching
Regulator with Dual LDO Controller
VIN: 4V to 36V, VOUT(MIN) = 0.8V, IQ = 1mA, ISD < 1µA,
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LT3507/LT3507A 36V, 2.5MHz, Triple (2.4A + 1.5A + 1.5A (IOUT) with LDO
Controller High Efficiency Step-Down DC/DC Converter
VIN: 4V to 36V, VOUT(MIN) = 0.8V, IQ = 7mA, ISD = 1µA,
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LT3970
40V, 350mA (IOUT), 2.2MHz Step-Down Switching Regulator with
IQ = 2.5µA
VIN: 4.2V to 40V, VOUT(MIN) = 1.2V, IQ = 2.5µA, ISD < 1µA,
3mm × 2mm DFN, MSOP-10
LT3502/LT3502A 40V, 500mA (IOUT), 1.1MHz/2.2MHz Step-Down Switching
Regulator
VIN: 3V to 40V, VOUT(MIN) = 0.8V, IQ = 1.5mA, ISD < 1µA,
2mm × 2mm DFN-8, MSOP-10E



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