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參數(shù)資料
| 型號： | LTC3549EDCB#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.6 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-229, DFN-6 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 352K |
| 代理商： | LTC3549EDCB#TRM |
LTC3549
16
3549f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2005
LT 0706 PRINTED IN USA
PART NUMBER
DESCRIPTION
COMMENTS
LTC1878
600mA (IOUT), 550kHz, Synchronous
Step-Down DC/DC Converter
96% Efciency, VIN: 2.7V to 6V, VOUT(MIN) = 0.8V, IQ = 10A, ISD < 1A,
MS8 Package
LTC1879
1.20A (IOUT), 550kHz, Synchronous
Step-Down DC/DC Converter
95% Efciency, VIN: 2.7V to 10V, VOUT(MIN) = 0.8V, IQ = 15A, ISD < 1A,
16-Lead TSSOP
LT3020
100mA, Low Voltage VLDO
VIN: 0.9V to 10V, VOUT(MIN) = 0.20V, Dropout Voltage = 0.15V, IQ = 120A,
ISD < 3A, VOUT = ADJ, DFN/MS8 Packages
LTC3025
100mA, Low Voltage VLDO
VIN: 0.9V to 5.5V, VOUT(MIN) = 0.40V, Dropout Voltage = 0.05V, IQ = 54A,
ISD < 1A, VOUT = ADJ, DFN Package
LTC3404
600mA (IOUT), 1.4MHz, Synchronous
Step-Down DC/DC Converter
96% Efciency, VIN: 2.7V to 6V, VOUT(MIN) = 0.8V, IQ = 10A, ISD < 1A,
MS8 Package
LTC3405/LTC3405A
300mA (IOUT), 1.5MHz, Synchronous
Step-Down DC/DC Converter
95% Efciency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 20A, ISD < 1A,
ThinSOT Package
LTC3406/LTC3406B
600mA (IOUT), 1.5MHz, Synchronous
Step-Down DC/DC Converter
96% Efciency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 20A, ISD < 1A,
ThinSOT Package
LTC3407/LTC3407-2
Dual, 800mA (IOUT), 2.25MHz, Synchronous
Step-Down DC/DC Converter
95% Efciency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40A, ISD < 1A,
10-Lead MSE Package
LTC3409
600mA, 2.6MHz Low VIN, Synchronous
Step-Down DC/DC Converter
95% Efciency, VIN: 1.6V to 5.5V, VOUT(MIN) = 0.6V, IQ = 65A, ISD < 1A,
DFN Package
LTC3410/LTC3410B
300mA, 2.25MHz, Synchronous Step-Down
DC/DC Converter
96% Efciency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 26A/200A, ISD < 1A,
SC70 Package
LTC3411
1.25A (IOUT), 4MHz, Synchronous
Step-Down DC/DC Converter
95% Efciency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.8V, IQ = 60A, ISD < 1A,
10-Lead MS Package
VLDO and ThinSOT are trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
U
RELATED PARTS
Efciency vs Load Current
RUN
CIN
4.7
F
CERAMIC
VIN
2.5V TO
4.2V
LTC3549
VIN
MODE
L1, 4.7
H*
CL, 22pF
R1, 267k
R2
137k
3549 TA03a
SW
VFB
GND
COUT
4.7
F
CERAMIC
VOUT
1.8V
*TDK VLF3012AT-4R7MR74
LOAD CURRENT (mA)
30
EFFICIENCY
(%)
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3549 TA03b
0
1
VIN = 2.5V
VOUT = 1.8V
VIN = 4.2V
VIN = 3.6V
20
s/DIV
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
3549 TA03c
VIN = 3.6V
VOUT = 1.8V
ILOAD = 100mA to 250mA
Load Step Response
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