ZHCSIU0D February   2000  – September 2018 LM4051-N

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     Device Images
      1. 1.2 VREF 简化原理图
      2.      可调基准简化原理图
  4. 修订历史记录
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 LM4051-1.2 Electrical Characteristics
    6. 6.6 LM4051-ADJ Electrical Characteristics
    7. 6.7 Typical Characteristics
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 LM4051-N - 1.2 V
      2. 8.4.2 LM4051-N - ADJ
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Shunt Regulator
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Adjustable Shunt Regulator
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
    3. 9.3 System Examples
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 接收文档更新通知
    2. 12.2 社区资源
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 术语表
  13. 13机械、封装和可订购信息

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DBZ|3
散热焊盘机械数据 (封装 | 引脚)

LM4051-ADJ Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VREF Reference Voltage IR = 100 μA, VOUT = 5 V 1.212 V
Reference Voltage Tolerance(2)(4) IR = 100 μA, VOUT =5 V LM4051AIM3(1) ±1.2 mV
LM4051BIM3(1) ±2.4
LM4051CIM3(1) ±6
Industrial Temp. Range
TA = TJ = TMIN to TMAX
LM4051AIM3(1) ±5.2
LM4051BIM3(1) ±6.4
LM4051CIM3(1) ±10.1
IRMIN Minimum Operating Current LM4051AIM3(1) 36 µA
LM4051BIM3(1) 36
LM4051CIM3(1) 36
Industrial Temp. Range
TA = TJ = TMIN to TMAX
LM4051AIM3(1) 60
LM4051BIM3(1) 60
LM4051CIM3 (1) 65
∆VREF/∆IR Reference Voltage Change with Operating Current Change IRMIN ≤ IR ≤ 1 mA
VOUT ≥ 1.6 V(3)
TJ = 25°C 0.3 mV
Industrial Temp. Range
TA = TJ = TMIN to TMAX
1.1(2)
1 mA ≤ IR ≤ 12 mA
VOUT ≥ 1.6 V(3)
TJ = 25°C 0.6
Industrial Temp. Range
TA = TJ = TMIN to TMAX
6(2)
∆VREF/∆VO Reference Voltage Change with Output Voltage Change IR = 0.1 mA TJ = 25°C –1.69 mV
Industrial Temp. Range
TA = TJ = TMIN to TMAX
–2.8(2)
IFB Feedback Current 70 130 nA
∆VREF/∆T Average Reference Voltage Temperature Coefficient (Note 8) VOUT = 2.5 V
∆T = −40 ̊C to +125 ̊C
IR = 10 mA TJ = 25°C 20 ppm/°C
Industrial Temp. Range
TA = TJ = TMIN to TMAX
±50(2)
IR = 1 mA TJ = 25°C 15
Industrial Temp. Range
TA = TJ = TMIN to TMAX
±50(2)
IR =100 μA TJ = 25°C 15
Industrial Temp. Range
TA = TJ = TMIN to TMAX
±50(2)
ZOUT Dynamic Output Impedance IR = 1 mA, f = 120 Hz, IAC = 0.1 IR VOUT = VREF 0.3 Ω
VOUT = 10 V 2
eN Wideband Noise IR = 100 μA, VOUT = VREF, 10 Hz ≤ f ≤ 10 kHz 20 µVrms
∆VREF Reference Voltage Long Term Stability(5) t = 1000 hrs, IR = 100 μA, T = 25 ̊C ± 0.1 ̊C 120 ppm
VHYST Thermal Hysteresis(6) ∆T = −40 ̊C to +125 ̊C 0.3 mV/V
Limits are 100% production tested at 25 ̊C. Limits over temperature are ensured through correlation using Statistical Quality Control (SQC) methods. The limits are used to calculate National’s AOQL.
This overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ± [(∆VR/∆T)(max∆T)(VR)]. Where, ∆VR/∆T is the VR temperature coefficient, max∆T is the maximum difference in temperature from the reference point of 25°̊C to TMAX or TMIN, and VR is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where max∆T = 65 ̊C is shown below:
  • A-grade: ± 0.425% = ± 0.1% ± 50 ppm/°̊C × 65°̊C
  • B-grade: ± 0.525% = ± 0.2% ± 50 ppm/°̊C × 65°̊C
  • C-grade: ± 0.825% = ± 0.5% ± 50 ppm/°̊C × 65°̊C
Therefore, as an example, the A-grade LM4051-1.2 has an overtemperature Reverse Breakdown Voltage tolerance of ± 1.2 V × 0.425% = ± 5.2 mV.
When VOUT ≤ 1.6 V, the LM4051-ADJ in the SOT-23 package must operate at reduced IR. This is caused by the series resistance of the die attach between the die (–) output and the package (–) output pin. See the Output Saturation curve in the Typical Characteristics section.
Reference voltage and temperature coefficient will change with output voltage. See Typical Characteristics curves.
Long-term stability is VR at 25°̊C measured during 1000 hrs.
Thermal hysteresis is defined as the difference in voltage measured at +25 ̊C after cycling to temperature –40 ̊C and the 25 ̊C measurement after cycling to temperature +125 ̊C.