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| 型号： | LTC3104IMSE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 339K |
| 描述： | IC REG DL BCK/LINEAR SYNC 16MSOP |
| 标准包装： | 2,500 |
| 拓扑： | 降压（降压）同步（1），线性（LDO）（1） |
| 功能： | 任何功能 |
| 输出数： | 2 |
| 频率 - 开关： | 1.2MHz |
| 电压/电流 - 输出 1： | 0.6 V ~ 13.8 V，300mA |
| 电压/电流 - 输出 2： | 0.6 V ~ 14.5 V，10mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 2.5 V ~ 15 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TFSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 16-MSOP，裸露焊盘 |
| 包装： | 带卷 (TR) |
LTC3104
1
3104f
TYPICAL APPLICATION
FEATURES
DESCRIPTION
2.6礎 Quiescent Current,
15V, 300mA Synchronous
Step-Down DC/DC
Converter and 10mA LDO
The LTC
?/DIV>
3104 is a high efficiency, monolithic synchronous
step-down converter using a current mode architecture
capable of supplying 300mA of output current. The LTC3104
includes an integrated, adjustable 10mA LDO to power
noise sensitive functions.
The LTC3104 offers two operational modes: automatic
Burst Mode operation and forced continuous mode allow-
ing the user to optimize output voltage ripple, noise and
light load efficiency. With Burst Mode operation enabled,
the typical DC input supply current at no load drops to
2.6礎, maximizing the efficiency for light loads. Selec-
tion of forced continuous mode provides very low noise
constant frequency, 1.2MHz operation.
Additionally, the LTC3104 includes an accurate RUN com-
parator, thermal overload protection, a power good output
and an integrated soft-start feature to guarantee that the
power system start-up is well controlled.
Efficiency vs Output Current
APPLICATIONS
n
Ultralow Quiescent Current: 2.6礎
n
Synchronous Rectification Efficiency Up to 95%
n
Wide V
IN
Range: 2.5V to 15V
n
Wide V
OUT
Range: 0.6V to 13.8V
n
300mA Output Current
n
User-Selectable Automatic Burst Mode
?/DIV>
or Forced
Continuous Operation
n
Accurate and Programmable RUN Pin Threshold
n
1.2MHz Fixed Frequency PWM
n
Internal Compensation
n
Power Good Status Output for V
OUT
n
10mA Adjustable LDO
n
Available in Thermally Enhanced 3mm ?4mm ?
0.75mm, 14-Pin DFN and 16-Pin MSOP Packages
n
Remote Sensor Networks
n
Distributed Power Systems
n
Multicell Battery or SuperCap Regulator
n
Energy Harvesters
n
Portable Instruments
n
Low Power Wireless Systems
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
V
IN
22nF
BST
3V TO 15V
ON
OFF
RUN
SW
RUNLDO
MODE
V
CC
PGOOD
FBLDO
V
INLDO
V
LDO
FB
LTC3104
GND
412k
10礖
2.2V
300mA
1.8V
10mA
3104 TA01a
12pF
47礔
4.7礔
1礔
10礔
825k
1.78M
665k
ON
OFF
OUTPUT CURRENT (A)
65
95
100
60
55
90
75
85
80
70
0.0001
0.01
0.1
1
3104 TA01b
50
0.1
1
10
100
0.001
V
IN
= 3V
V
IN
= 5V
V
IN
= 10V
V
IN
= 15V
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