参数资料
| 型号： | LT3050MPMSE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .1A 12MSOP |
| 产品培训模块： | LT3050 - 100mA, Low Noise Linear Regulator With Precision Current Limit And Diagnostic Functions |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.6 V ~ 44.5 V |
| 输入电压： | 1.6 V ~ 45 V |
| 电压 - 压降（标准）： | 0.34V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 100mA |
| 电流 - 限制（最小）： | 110mA |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-TSSOP （0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 12-MSOP，裸露焊盘 |
| 包装： | 带卷 (TR) |
LT3050 Series
100mA, Linear Regulator
with Precision Current Limit
and Diagnostic Outputs
FEATURES
DESCRIPTION
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Output Current Monitor: 1/100 th of I OUT
Fault Indicator: Current Limit, Minimum I OUT or
Thermal Limit
Output Current: 100mA
Dropout Voltage: 340mV
Input Voltage Range: 1.6V to 45V
Programmable Precision Current Limit: ±5%
Programmable Minimum I OUT Monitor
Low Noise: 30μV RMS (10Hz to 100kHz)
Adjustable Output (V REF = V OUT(MIN) = 0.6V)
Fixed Output Voltages: 3.3V, 5V
Output Tolerance: ±2% Over Line, Load and Temperature
Stable with Low ESR, Ceramic Output Capacitors
(2.2μF minimum)
Shutdown Current: <1μA
Reverse-Battery, Reverse-Output and
Reverse-Current Protection
Thermal Limit Protection
12-Lead 3mm × 2mm DFN and MSOP Packages
The LT ? 3050 series are micro-power, low noise, low
dropout voltage (LDO) linear regulators. The devices
supply 100mA of output current with a dropout voltage of
340mV. A 10nF bypass capacitor reduces output noise to
30μV RMS in a 10Hz to 100kHz bandwidth and soft-starts
the reference. The LT3050’s ±45V input voltage rating
combined with its precision current limit and diagnostic
functions make the IC an ideal choice for robust, high
reliability applications.
A single resistor programs the LT3050’s current limit, accurate
to ±5% over a wide input voltage and temperature range.
A single resistor programs the LT3050’s minimum output
current monitor, useful for detecting open-circuit conditions.
The current monitor function sources a current equal to
1/100th of output current. A logic FAULT pin asserts low if
the LT3050 is in current limit, operating below its minimum
output current (open-circuit) or is in thermal shutdown.
The LT3050 optimizes stability and transient response
with low ESR ceramic capacitors, requiring a minimum of
APPLICATIONS
2.2μF. The LT3050 is available in ?xed output voltages of
3.3V and 5V, and as an adjustable version with an output
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Protected Antenna Supplies
Automotive Telematics
Industrial Applications (Trucks, Forklifts, etc.)
High Reliability Applications
voltage range down to the 0.6V reference.The LT3050 is
available in the thermally-enhanced 12-Lead 3mm × 2mm
DFN and MSOP packages.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
External Current Limit R IMAX = 1.15k
5V Supply with 100mA Precision Current Limit, 10mA I MIN
105
104
V OUT = 5V
IN
OUT
5V
103
12V
V IN
1μF
120k
SHDN
2.2μF
102
V IN = 15V
FAULT
101
LT3050-5
100
V IN = 12V
10nF
1.15k
(THRESHOLD = 100mA)
I MAX
I MON
3k
(ADC FULL SCALE = 3V)
TO μP ADC
0.1μF
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V IN = 5.6V
0.1μF
11.3k
(THRESHOLD = 10mA)
I MIN
REF/BYP
GND
10nF
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–75 –50 –25 0 –25 50 75 100 125 150 175
3050 TA01
TEMPERATURE (°C)
3050 TA01a
3050fa
1
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