BR431

BR431 Rev.E Jan.-2022 DATA SHEET 描述 / Descriptions TO-92 塑封封装精密可调基准电源。 Precision adjustable shunt regulator in a TO-92 Plastic Package. 特征 / Features 精确参照电压 2.500V;允许电压误差为 0.4%,0.8%;阴极电流能力为 1.0mA～100mA;快速导通;可调节 输出电压为 VO=Vref～37V;阴极工作电流低(典型值:400μA);动态输出阻抗低(典型值:0.15Ω)。 Precise reference voltage to 2.500V;guaranteed 0.4%,0.8% reference voltage Tolerance; sink current capability,1.0mA～100mA;quick turn-on; adjustable Output voltage, VO=Vref～37V;low operational cathode current,400μA typical; 0.15Ω typical output impedance. 用途 / Applications 用于线性调整器，可调节电源和开关电源。 Linear regulators, adjustable power supply, switching power supply. 内部等效电路 / Equivalent Circuit 引脚排列 / Pinning 12 3 PIN1：K PIN 2：A PIN 3：R 印章代码 / Marking 见印章说明。See Marking Instructions http://www.fsbrec.com 1/7 BR431 Rev.E Jan.-2022 极限参数 / DATA SHEET Absolute Maximum Ratings(Ta=25℃) 参数 Parameter 符号 Symbol 数值 Rating 单位 Unit VKA 37 V IK -100～+100 mA Reference Input Current Range, Continuous IREF 0.05～+10 mA Power Dissipation PD 770 mW Tamb -40～125 ℃ Tj 160 ℃ Tstg -65～150 ℃ Cathode to Anode Voltage Cathode Current Range, Continuous Operating Ambient Temperature Junction Temperature Storage Temperature Range 电性能参数 / Electrical Characteristics(Ta=25℃) 参数 Parameter Reference Input voltage Deviation of Reference Input Voltage OverTemperature Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage Reference Input current Deviation of Reference Input Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-state cathode current Dynamic impedance http://www.fsbrec.com 符号 Symbol VREF △VREF /T △VREF /△VKA IREF △IREF/T 测试条件 Test Conditions VKA=VREF IK=10mA(A=0.4%) VKA=VREF IK=10mA(B=0.8%) VKA=VREF IK=10mA TA=-25～85℃ IK=10mA △VKA =10V to VREF IK=10mA △VKA =36V to 10V IK=10mA R1=10KΩ R2=open IK=10mA R1=10KΩ, R2=open TA=-40～125℃ 最小值 Min 典型值 Typ 最大值 Max 单位 Unit 2.490 2.500 2.510 V 2.480 2.500 2.520 V 4.5 17 mV -1 -2.7 mV/V -0.45 -2.0 mV/V 1.0 4.0 μA 0.4 1.2 μA IK(min) VKA=VREF 0.4 1.0 mA IK(off) VKA=36V VREF=0V VKA=VREF f≤1.0KHz IK=1mA to 100mA 0.05 1.0 μA 0.15 0.5 Ω |ZKA| 2/7 BR431 Rev.E Jan.-2022 DATA SHEET 测试电路图&典型应用图 Test circuits&Typical Application BLOCK DIAGRAM: BR431 TEST CIRCUITS: BR431 BR431 BR431 Test Circuit For VKA=VREF Test Circuit for VKA≥VREF Test Circuit For IKA(OFF) TYPICAL APPLICATION: Shutdown Regulator IN Io=VREF/RCL+IKA Higher-current Shunt RCL OUT BR431 Constant Current Source http://www.fsbrec.com Series Pass Regulator 3/7 BR431 Rev.E Jan.-2022 DATA SHEET 电参数曲线图 / Electrical Characteristic Curve http://www.fsbrec.com 4/7 BR431 Rev.E Jan.-2022 DATA SHEET 外形尺寸图 / Package Dimensions http://www.fsbrec.com 5/7 BR431 Rev.E Jan.-2022 DATA SHEET 印章说明 / Marking Instructions BR 431 A **** 说明： BR： 为公司代码 431： 为型号代码 A: 为 VREF 分档代码 ****： 为生产批号代码，随生产批号变化 Note: BR: Company Code. 431: Product Type Code. A: VREF Classifications Symbol ****: Lot No. Code, code change with Lot No http://www.fsbrec.com 6/7 BR431 Rev.E Jan.-2022 DATA SHEET 波峰焊温度曲线图(无铅) / Temperature Profile for Dip Soldering(Pb-Free) 说明： Note: 1、预热温度 25～150℃，时间 60～90sec; 1.Preheating:25~150℃, Time:60~90sec. 2、峰值温度 255±5℃，时间持续为 5±0.5sec; 2.Peak Temp.:255±5℃, Duration:5±0.5sec. 3、焊接制程冷却速度为 2～10℃/sec. 3. Cooling Speed: 2~10℃/sec. 耐焊接热试验条件 / 温度：270±5℃ Resistance to Soldering Heat Test Conditions 时间：10±1 sec. Temp:270±5℃ Time:10±1 sec 包装规格 / Packaging SPEC. 散件包装 / BULK Package Type 封装形式 TO-92 Units 包装数量 Dimension 包装尺寸 Inner Boxes/Outer Box 盒/箱 (unit：mm3) Units/Bag 只/袋 Bags/Inner Box 袋/盒 Units/Inner Box 只/盒 Units/Outer Box 只/箱 Bag 袋 Inner Box 盒 Outer Box 箱 1,000 10 10,000 1,000 10 10,000 5 50,000 135×190 237×172×102 560×245×195 10 100,000 135×190 237×172×102 560×245×375 Dimension 包装尺寸 (unit：mm3) Units/tape 只/纸带 Tape/Inner Box 纸带/盒 Rows/Inner Box 纸带层/盒 Inner Boxes/Outer Box 盒/箱 Units/Outer Box 只/箱 Inner Box 盒 Outer Box 箱 3,000 1 120 10 30,000 328×230×42 小箱 480×346×235， 大箱 547×407×268 编带包装 / AMMO Package Type 封装形式 TO-92 Units 包装数量 使用说明 / Notices http://www.fsbrec.com 7/7