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参数资料
| 型号： | LTC3549EDCB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.25A 6DFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.61 V ~ 5.5 V |
| 输入电压： | 1.6 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 2.25MHz |
| 电流 - 输出： | 250mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-DFN-EP（2x3） |
LTC3549
TYPICAL APPLICATIO
V IN
2.5V TO
4.2V
C IN
4.7 μ F
CERAMIC
RUN SW
LTC3549
V IN
V FB
MODE
L1, 4.7 μ H*
CL, 22pF
R1, 267k
V OUT
1.8V
C OUT
4.7 μ F
CERAMIC
100
*TDK VLF3012AT-4R7MR74
Ef?ciency vs Load Current
GND
3549 TA03a
R2
137k
Load Step Response
90
80
70
60
50
40
30
V IN = 2.5V
V IN = 3.6V
V IN = 4.2V
V OUT
100mV/DIV
AC COUPLED
I LOAD
200mA/DIV
I L
200mA/DIV
20
10
0
V OUT = 1.8V
0.1 1
10 100
1000
20 μ s/DIV
V IN = 3.6V
V OUT = 1.8V
I LOAD = 100mA to 250mA
3549 TA03c
LOAD CURRENT (mA)
RELATED PARTS
3549 TA03b
PART NUMBER
LTC1878
LTC1879
LT3020
LTC3025
LTC3404
LTC3405/LTC3405A
LTC3406/LTC3406B
DESCRIPTION
600mA (I OUT ), 550kHz, Synchronous
Step-Down DC/DC Converter
1.20A (I OUT ), 550kHz, Synchronous
Step-Down DC/DC Converter
100mA, Low Voltage VLDO ?
100mA, Low Voltage VLDO
600mA (I OUT ), 1.4MHz, Synchronous
Step-Down DC/DC Converter
300mA (I OUT ), 1.5MHz, Synchronous
Step-Down DC/DC Converter
600mA (I OUT ), 1.5MHz, Synchronous
Step-Down DC/DC Converter
COMMENTS
96% Ef?ciency, V IN : 2.7V to 6V, V OUT(MIN) = 0.8V, I Q = 10μA, I SD < 1μA,
MS8 Package
95% Ef?ciency, V IN : 2.7V to 10V, V OUT(MIN) = 0.8V, I Q = 15μA, I SD < 1μA,
16-Lead TSSOP
V IN : 0.9V to 10V, V OUT(MIN) = 0.20V, Dropout Voltage = 0.15V, I Q = 120μA,
I SD < 3μA, V OUT = ADJ, DFN/MS8 Packages
V IN : 0.9V to 5.5V, V OUT(MIN) = 0.40V, Dropout Voltage = 0.05V, I Q = 54μA,
I SD < 1μA, V OUT = ADJ, DFN Package
96% Ef?ciency, V IN : 2.7V to 6V, V OUT(MIN) = 0.8V, I Q = 10μA, I SD < 1μA,
MS8 Package
95% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.8V, I Q = 20μA, I SD < 1μA,
ThinSOT ? Package
96% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.6V, I Q = 20μA, I SD < 1μA,
ThinSOT Package
LTC3407/LTC3407-2
Dual, 800mA (I OUT ), 2.25MHz, Synchronous 95% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.6V, I Q = 40μA, I SD < 1μA,
Step-Down DC/DC Converter
10-Lead MSE Package
LTC3409
LTC3410/LTC3410B
LTC3411
600mA, 2.6MHz Low V IN , Synchronous
Step-Down DC/DC Converter
300mA, 2.25MHz, Synchronous Step-Down
DC/DC Converter
1.25A (I OUT ), 4MHz, Synchronous
Step-Down DC/DC Converter
95% Ef?ciency, V IN : 1.6V to 5.5V, V OUT(MIN) = 0.6V, I Q = 65μA, I SD < 1μA,
DFN Package
96% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.8V, I Q = 26μA/200μA, I SD < 1μA,
SC70 Package
95% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.8V, I Q = 60μA, I SD < 1μA,
10-Lead MS Package
VLDO and ThinSOT are trademarks of Linear Technology Corporation.
3549f
16 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 0706 ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2005
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| LTC3550EDHC#PBF | 功能描述:IC CHARGER BATT DUAL 16-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC3550EDHC#TRPBF | 功能描述:IC CHARGER BATT DUAL 16-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
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