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LT3570 Datasheet(PDF) 20 Page - Linear Technology

Part No. LT3570
Description  1.5A Buck Converter, 1.5A Boost Converter and LDO Controller
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT3570 Datasheet(HTML) 20 Page - Linear Technology

 
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LT3570
20
3570fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0309 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PDA Core
PART NUMBER
DESCRIPTION
COMMENTS
LT1767
1.5A, 1.25MHz Step-Down Switching Regulator
3V to 25V Input, VREF = 1.2V, Synchronizable Up to 2MHz,
MSOP Package
LT1930/LT1930A
1A (ISW), 1.2MHz/2.2MHz, High Efficiency Step-Up DC/DC
Converter
VIN: 2.6V to 16V, VOUT(MAX) = 34V, IQ = 4.2mA/5.5mA,
ISD < 1μA, ThinSOT™ Package
LT1939
25V, 2.4MHz Step-Down DC/DC Converter and LDO Controller
VIN: 3V to 40V, VOUT(MIN) = 0.8V, IQ = 2mA, ISD < 1μA,
3mm
× 3mm DFN
LT1943
Quad Output, 2.6A Buck, 2.6A Boost, 0.3A Boost, 0.4A Inverter
1.2MHz TFT DC/DC Converter
VIN: 4.5V to 22V, VOUT(MAX) = 40V, IQ = 10mA, ISD < 35μA,
TSSOP28E Package
LT1945
Dual Output Pos/Neg 350mA (ISW), Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN: 1.2V to 15V, VOUT(MAX) = ±34V, IQ = 20μA, ISD < 1μA,
10-Pin MS Package
LT3463
Dual Output Pos/Neg 250mA (ISW), Constant Off-Time, High
Efficiency Step-Up DC/DC Converter with Integrated Schottkys
VIN: 2.4V to 15V, VOUT(MAX) = ±40V, IQ = 40μA, ISD < 1μA,
3mm
× 3mm DFN10 Package
LT3467
1.1A, 1.3MHz Step Up DC/DC Converter with Integrated Soft-Start
VIN: 2.4V to 16V, VOUT(MAX) = 40V, ISD < 1 μA, Low profile
(1mm) SOT-23 Package
LT3500
40V, 2A, 2.4MHz Step-Down DC/DC Converter and LDO Controller
VIN: 3V to 40V, VOUT(MIN) = 0.8V, IQ = 2mA, ISD < 1μA,
3mm
× 3mm DFN
LT3507
36V, 2.5MHz Triple (2.4A, 1.5A, 1.5A) Step-Down DC/DC Converter
and LDO Controller
VIN: 4V to 36V, VOUT(MIN) = 0.8V, IQ = 7mA, ISD < 1μA,
5mm
× 7mm QFN38 Package
ThinSOT is a trademark of Linear Technology Corporation.
VIN1
SHDN1
SHDN2
SHDN3
SHDN1
SHDN2
SHDN3
SW1
FB1
C8
100nF
C7
1nF
C5
10nF
C2
22μF
C3
4.7μF
VOUT3
1.8V
500mA
R3
34k
VOUT2
3.3V
500mA
R8
25k
R1
191k
VOUT1
15V
200mA
VIN
4V TO 12V
R7
25k
R2
10.7k
R4
10.7k
R5
13.7k
R6
10.7k
3570 TA04
R9
20k
C9
10μF
C1
10μF
C6
1nF
C4
10nF
L2
8.2μH
L1
12μH
D2
D3
D1
BOOST
SW2
FB2
SS2
NPN_DRV
FB3
VC2
SS1
VC1
VIN2 VIN3 BIAS
RT
SYNC
LT3570
GND
Q1


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