LT3050EMSE-3.3-TRPBF

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LT3050EMSE-3.3-TRPBF - 100mA, Linear Regulator with Precision Current Limit and Diagnostic Outputs -...

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LT3050EMSE-3.3-TRPBF 数据手册

FEATURES n n n n n n n n n n n n n n n n LT3050 Series 100mA, Linear Regulator with Precision Current Limit and Diagnostic Outputs DESCRIPTION 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 30μVRMS 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 2.2μF. The LT3050 is available in ﬁxed output voltages of 3.3V and 5V, and as an adjustable version with an output 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. Output Current Monitor: 1/100th of IOUT Fault Indicator: Current Limit, Minimum IOUT or Thermal Limit Output Current: 100mA Dropout Voltage: 340mV Input Voltage Range: 1.6V to 45V Programmable Precision Current Limit: ±5% Programmable Minimum IOUT Monitor Low Noise: 30μVRMS (10Hz to 100kHz) Adjustable Output (VREF = VOUT(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:

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LT3050EMSE-3.3-TRPBF

1. 物料型号： - LT3050系列，包括LT3050EMSE#PBF、LT3050IMSE#PBF、LT3050MPMSE#PBF等多个型号，分别对应不同的封装和温度范围。

2. 器件简介： - LT3050系列是微功耗、低噪声、低 dropout 电压（LDO）线性调节器，提供100mA的输出电流，dropout电压为340mV。该系列调节器具有高精度电流限制和诊断功能，适用于高可靠性应用。

3. 引脚分配： - REF/BYP（引脚1）：旁路/软启动。 - IN（引脚5、6）：输入。 - OUT（引脚7、8）：输出。 - IMON（引脚12）：输出电流监控。 - FAULT（引脚3）：故障引脚。 - GND（引脚10，暴露的垫片引脚13）：地。 - SHDN（引脚4）：关闭。

4. 参数特性： - 输出电流监控：IOUT的1/100。 - 故障指示：电流限制、最小Iout或热限制。 - 低噪声：30μVRMS（10Hz至100kHz）。 - 可编程最小Iout监控：用于检测开路条件。 - 固定输出电压：3.3V和5V，可调版本输出电压范围低至0.6V参考。

5. 功能详解： - LT3050系列提供了包括电流限制、热限制和最小电流故障条件在内的多种保护功能。具有微功耗关闭功能，关闭时参考软启动电容被重置。

6. 应用信息： - 适用于保护天线电源、汽车远程信息处理、工业应用（卡车、叉车等）和高可靠性应用。

7. 封装信息： - 提供12引脚3mm×2mm DFN和MSOP封装。对于DFN和MSOP封装，暴露的垫片是GND，必须焊接到PCB上。

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