LT3050EMSE-PBF

LT3050EMSE-PBF

  • 厂商:

    LINER

  • 封装:

  • 描述:

    LT3050EMSE-PBF - 100mA, Linear Regulator with Precision Current Limit and Diagnostic Outputs - Linea...

  • 详情介绍
  • 数据手册
  • 价格&库存
LT3050EMSE-PBF 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:
LT3050EMSE-PBF
1. 物料型号: - LT3050系列有多种型号,包括可调输出版本以及固定输出电压版本,如3.3V和5V。还有不同封装形式的版本,例如DFN和MSOP。

2. 器件简介: - LT3050系列是一种微功耗、低噪声、低 dropout 电压(LDO)线性调节器。这些设备提供高达100mA的输出电流,典型dropout电压为340mV,输入电压范围从1.6V至45V。具备微功耗关闭功能、可编程电流限制和诊断功能。

3. 引脚分配: - LT3050有12个引脚,具体功能包括: - REF/BYP(引脚1):旁路/软启动。 - IN(引脚5、6):输入电源。 - OUT(引脚7、8):输出电源。 - IMON(引脚9):输出电流监测。 - ADJ(引脚10):调节。 - FAULT(引脚3):故障引脚。 - GND(引脚10及暴露的垫片引脚13):地。 - IMIN(引脚2):最小输出电流编程引脚。 - IMAX(引脚11):精确电流限制编程引脚。 - SHDN(引脚4):关闭引脚。

4. 参数特性: - 输出电流监测:1/100th的IOUT故障指示。 - 可编程最小IOUT监测:用于检测开路条件。 - 低噪声:30μVRMS(10Hz至100kHz带宽)。 - 可调输出范围:0.6V至44.5V。 - 固定输出电压:3.3V和5V。 - 输出公差:±2%。 - 关闭电流:<1μA。

5. 功能详解: - LT3050系列优化了低ESR陶瓷电容器的稳定性和瞬态响应,最小需要2.2μF。 - 设备在关闭时电流小于1μA,并且参考软启动电容器被重置。 - 设备包括反电池保护、反输出保护、反电流保护、电流限制(带反折叠)和热关闭等保护功能。

6. 应用信息: - LT3050适用于电池供电、汽车和工业系统。 - 在电池备份应用中,当输出由备份电池维持,输入被拉至地时,LT3050可以防止反向电流流动。

7. 封装信息: - LT3050系列提供12引脚塑料DFN(3mm×2mm)和MSOP封装,具有暴露的垫片,以改善热性能和地面连接。
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