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IRU431ALCL3

IRU431ALCL3

  • 厂商:

    IRF

  • 封装:

  • 描述:

    IRU431ALCL3 - LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR - International Rectifier

  • 详情介绍
  • 数据手册
  • 价格&库存
IRU431ALCL3 数据手册
Data Sheet No. PD94118 IRU431L / IRU431AL LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR DESCRIPTION The IRU431L family are three-terminal adjustable shunt regulators that can also be used as precision voltage references. Its output voltage may be set to any value between VREF(1.24V) and 15V with two external resistors as shown in the typical application circuit. Other applications of this device include being used as a merged amplifier and reference in applications such as a linear regulator or as the secondary side controller in low voltage power supply applications. The IRU431L only requires 80m A maximum quiescent current before regulating, making it ideal as a voltage reference for battery type applications. The IRU431L has 61% initial accuracy while IRU431AL provides 60.5% initial accuracy. FEATURES SOT-23 Packages Voltage Reference Initial Accuracy (1% for IRU431L and 0.5% for IRU431AL) Low Operating Cathode Current (80m A max) Unconditionally Stable with only 1m F Adjustable Output from 1.24V to 15V 0.25V Typical Output Impedance Pin to Pin Compatible with TLV431 APPLICATIONS Precision Voltage Reference Linear Regulator Controller Secondary Side Controller for the low voltage power supply applications TYPICAL APPLICATION VIN RB R1 VOUT IRU431L Vo = VREF 3o 1 + R1 p R2 Co R2 Figure 1 - Typical application of the IRU431L as a shunt regulator / voltage reference. PACKAGE ORDER INFORMATION TA (°C) 0 To 70 0 To 70 5-PIN SOT-23 (L5) IRU431LCL5 IRU431ALCL5 3-PIN SOT-23 (L3) IRU431LCL3 IRU431ALCL3 Rev. 1.8 02/20/02 www.irf.com 1 IRU431L / IRU431AL ABSOLUTE MAXIMUM RATINGS Input Voltage (V IN) .................................................... Continuous Cathode Current Range .......................... Reference Current Range .......................................... Storage Temperature Range ...................................... Operating Junction Temperature Range ..................... 15V -15mA To +15mA -0.05mA To 1mA -658C To 1508C 08C To 1508C PACKAGE INFORMATION 5-PIN SOT-23 (L5) TOP VIEW 3-PIN SOT-23 (L3) TOP VIEW 2 Cathode NC 1 NC 2 Cathode 3 5 Anode Anode 3 4 Ref 1 Ref θJA=256°C/W θJA=336°C/W ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over TA=0 to 708C, Co = 1m F. Typical values refer to TA=258C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. PARAMETER SYM TEST CONDITION IK=10mA, V KA=VREF, TA=258C IK=10mA, VKA=VREF IK=10mA, V KA=VREF, TA=258C IK=10mA, VKA=VREF VKA=VREF, IK=10mA Note 1 IK=10mA, D VKA=VREF to 6V IK=10mA, R1=10K V, R2=open IK=10mA, R1=10K V, R2=open Note 1 VKA=VREF VKA=6V, VREF=0V VKA=10V, VREF=0V VKA=15V, VREF=0V VKA=VREF, f
IRU431ALCL3
1. 物料型号: - IRU431L/IRU431AL

2. 器件简介: - IRU431L系列是一种三端可调分流调节器,也可以作为精密电压参考使用。通过两个外部电阻可以在1.24V至15V之间设置输出电压。该器件还可用于线性调节器或作为低压电源应用中的次级侧控制器。IRU431L在调节前的最大静态电流仅为80µA,非常适合用作电池应用的电压参考。IRU431L的初始精度为±1%,而IRU431AL提供±0.5%的初始精度。

3. 引脚分配: - Ref(参考):从Ref引脚到阴极引脚和地的电阻形成分压器,设置输出电压。 - Cathode(阴极):分流调节器的输出。必须在此引脚和阳极引脚之间连接至少1µF的电容以确保无条件稳定。 - Anode(阳极):地引脚。此引脚必须连接到系统中最低的电位,所有其他引脚必须相对于此引脚具有更高的电位。 - 1,2(NC):这些引脚内部未连接。

4. 参数特性: - 初始电压参考精度:IRU431L为1%,IRU431AL为0.5%。 - 最大工作阴极电流:80µA。 - 可调节输出:1.24V至15V。 - 输出阻抗:典型值为0.25Ω。 - 引脚兼容:与TLV431引脚对引脚兼容。

5. 功能详解: - IRU431L可以通过外部电阻R1和R2在1.24V至15V范围内编程任何电压。 - IRU431L在Ref引脚和地之间保持1.240V的恒定电压,通过在这两个引脚之间放置电阻R2,恒定电流流过R2,加入到keF电流中,并进入R1电阻产生电压。

6. 应用信息: - 精密电压参考。 - 线性调节器控制器。 - 低压电源应用的次级侧控制器。

7. 封装信息: - SOT-23封装。 - SOT-23封装在25°C时最大功耗为150mW,每升高1°C功耗降低1.2mW。
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