LTC1773EMS データシートの表示（PDF） - Linear Technology
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LTC1773EMS Datasheet PDF : 20 Pages
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LTC1773
TYPICAL APPLICATIO
33pF
30k
200pF
1
ITH
LTC1773
SW
10
2 RUN/SS SENSE– 9
0.1µF
VIN
3
SYNC/FCB
4
VFB
5
GND
8
VIN
7
TG
6
BG
40.2k
1%
169k
1% 249k
1%
RSENSE
0.050Ω
L1
10µH
3:1
Si2302DS
Si6801DY
47k
0.1µF
4.5V ≤ VIN ≤ 5.5V
+ VOUT2
CIN
3.3V
150µF
500mA
6.3V
+ COUT2
150µF
6.3V
VOUT1
2.5V
1A
D1
+ COUT1
150µF
6.3V
CIN, COUT1, COUT2: SANYO POSCAP 6TPA150M
RSENSE: IRC LR1206-01-R050-F
D1: BAS16
Figure 16. Dual Output Synchronous Buck Converter
1773 TA04
RELATED PARTS
PART NUMBER DESCRIPTION
LTC1622
Low Voltage Current Mode Step-Down DC/DC Controller
LTC1627/LTC1707 Low Voltage, Monolithic Synchronous Step-Down Regulator
LTC1735
High Efficiency Synchronous Step-Down Switching Controller
LTC1735-1
High Efficiency Synchronous Step-Down Switching Controller
LTC1771
LTC1772/B
LTC1778
LTC1779
LTC1877
LTC1878
LTC3404
Low Quiescent Current Step-Down DC/DC Controller
SOT-23 Low Voltage Step-Down Controller
Wide Operating Range/Step-Down Controller, No RSENSE
SOT-23 Current Mode Step-Down Converter
High Efficiency Monolithic Synchronous Step-Down Regulator
High Efficiency Monolithic Synchronous Step-Down Regulator
1.4MHz Monolithic Synchronous Step-Down Regulator
COMMENTS
VIN: 2V to 10V, 550kHz, Burst Mode Operation, Synchronizable
Low Supply Voltage Range: 2.65V to 8V, IOUT to 0.5A
Burst Mode Operation, 16-Pin Narrow SO, Fault Protection
Output Fault Protection 16-Pin GN, Burst Mode Operation,
Power Good
VIN: 2.8V to 18V, 10µA IQ, MS8 Package
6-Pin SOT-23, 2V ≤ VIN ≤ 10V, 550kHz
VIN up to 36V, Current Mode, Power Good
250mA Output Current, 2.5V ≤ VIN ≤ 9.8V, Up to 94% Efficiency
VIN from 2.65V to 10V, 10µA IQ, 550kHz, IOUT to 600mA,MS8
VIN from 2.65V to 7V, 10µA IQ, 550kHz, IOUT to 600mA,MS8
Up to 95% Efficiency, IOUT = 600mA at VIN = 3.3V
No Schottky Diode Required, 8-Lead MSOP
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
1773fb
LT 1106 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2006
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