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参数资料
| 型号： | LTC3548IMSE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ DL 10MSOP |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.6 V ~ 5 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 2.25MHz |
| 电流 - 输出： | 400mA，800mA |
| 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 10-MSOP 裸露焊盘 |
LTC3548
TYPICAL APPLICATION
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
V IN = 2.8V
TO 4.2V
C1
R5
10μF
RUN2
V IN
RUN1
100k
MODE/SYNC
POR
POWER-ON
RESET
V OUT2 = 3.3V
AT 100mA
D1
M1
L2
15μH
C5, 22pF
SW2
LTC3548
SW1
L1
2.2μH
C4, 33pF
V OUT1 = 1.8V
AT 800mA
+
C6
22μF
C3
4.7μF
R4
887k
R3
196k
V FB2
GND
V FB1
R1
301k
R2
604k
C2
10μF
C1, C2: TAIYO YUDEN JMK316BJ106ML
C3: MURATA GRM21BR60J475KA11B
C6: KEMET C1206C226K9PAC
D1: PHILIPS PMEG2010
L1: MURATA LQH32CN2R2M33
L2: TOKO A914BYW-150M (D52LC SERIES)
M1: SILICONIX Si2302DS
3548 TA04
90
Ef?ciency vs Load Current
100
Ef?ciency vs Load Current
80
95
90
2.8V
70
60
4.2V
3.6V
2.8V
85
80
4.2V
3.6V
50
75
70
40 V OUT = 3.3V
Burst Mode OPERATION
65
V OUT = 1.8V
Burst Mode OPERATION
30
NO LOAD ON OTHER CHANNEL
1 10 100
1000
60
1
NO LOAD ON OTHER CHANNEL
10 100
1000
LOAD CURRENT (mA)
RELATED PARTS
3548 TA05
LOAD CURRENT (mA)
3548 TA06
PART NUMBER
LTC1878
LT1940
LTC3252
LTC3405/LTC3405A
LTC3406/LTC3406B
LT3407/LT3407-2
LTC3411
LTC3412
LTC3414
LTC3440
DESCRIPTION
600mA (I OUT ), 550kHz,
Synchronous Step-Down DC/DC Converter
Dual Output 1.4A (I OUT) , Constant 1.1MHz,
High Ef?ciency Step-Down DC/DC Converter
Dual 250mA (I OUT ), 1MHz, Spread Spectrum
Inductorless Step-Down DC/DC Converter
300mA (I OUT ), 1.5MHz,
Synchronous Step-Down DC/DC Converters
600mA (I OUT ), 1.5MHz,
Synchronous Step-Down DC/DC Converters
600mA/1.5MHz, 800mA/2.25MHz
Dual Synchronous Step-Down DC/DC Converter
1.25A (I OUT ), 4MHz,
Synchronous Step Down DC/DC Converter
2.5A (I OUT ), 4MHz,
Synchronous Step Down DC/DC Converter
4A (I OUT ), 4MHz,
Synchronous Step Down DC/DC Converter
600mA (I OUT ), 2MHz,
Synchronous Buck-Boost DC/DC Converter
COMMENTS
95% Ef?ciency, V IN : 2.7V to 6V, V OUT(MIN) = 0.8V, I Q = 10μA,
I SD < 1μA, MSOP-8 Package
V IN : 3V to 25V, V OUT(MIN) = 1.2V, I Q = 2.5mA, I SD = < 1μA,
TSSOP-16E Package
88% Ef?ciency, V IN : 2.7V to 5.5V, V OUT(MIN) = 0.9V to 1.6V,
I Q = 60μA, I SD < 1μA, DFN-12 Package
96% 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
96% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.6V, I Q = 40μA,
I SD < 1μA, MSE, DFN Package
95% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.8V, I Q = 60μA,
I SD < 1μA, MSOP-10 Package
95% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 0.8V, I Q = 60μA,
I SD < 1μA, TSSOP-16E Package
95% Ef?ciency, V IN : 2.25V to 5.5V, V OUT(MIN) = 0.8V, I Q = 64μA,
I SD < 1μA, TSSOP-28E Package
95% Ef?ciency, V IN : 2.5V to 5.5V, V OUT(MIN) = 2.5V, I Q = 25μA,
I SD < 1μA, MSOP-10 Package
3548fc
16 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 0709 REV C ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2005
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