精密微功耗低压降电压基准 - LM4120

LM4120 (正在供货)

精密微功耗低压降电压基准

 

备选器件推荐

  • LM4121  -  See LM4121 for a 1.25V alternative
  • LM4050-N  -  Lower Current Shunt Reference
  • LM4050-N-Q1  -  Lower Current Shunt Reference

描述

The LM4120 device is a precision low-power, low dropout bandgap voltage reference with up to 5-mA output current source and sink capability.

This series reference operates with input voltages as low as 2 V and up to 12 V, consuming 160-µA (typical) supply current. In power-down mode, device current drops to less than 2 µA.

The LM4120 comes in two grades (A and Standard) and seven voltage options for greater flexibility. The best grade devices (A) have an initial accuracy of 0.2%, while the standard have an initial accuracy of 0.5%, both with a temperature coefficient of 50 ppm/°C ensured from −40°C to 125°C.

The very low dropout voltage, low supply current, and power-down capability of the LM4120 make this product an ideal choice for battery-powered and portable applications.

The device performance is ensured over the industrial temperature range (−40°C to 85°C), while certain specifications are ensured over the extended temperature range (−40°C to 125°C). Contact TI for full specifications over the extended temperature range. The LM4120 is available in a standard 5-pin SOT-23 package.

特性

  • Small SOT23-5 Package
  • Low Dropout Voltage: 120 mV Typical at 1 mA
  • High Output Voltage Accuracy: 0.2%
  • Source and Sink Current Output: ±5 mA
  • Supply Current: 160 µA Typical
  • Low Temperature Coefficient: 50 ppm/°C
  • Enable Pin
  • Fixed Output Voltages: 1.8, 2.048, 2.5, 3, 3.3,
    4.096, and 5 V
  • Industrial Temperature Range: −40°C to 85°C
  • (For Extended Temperature Range, −40°C to
    125°C, Contact TI)

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参数 与其它产品相比 串联电压基准

 
VO (V)
Initial Accuracy (Max) (%)
Temp Coeff (Max) (ppm/ degree C)
Rating
Operating Temperature Range (C)
Iout/Iz (Max) (mA)
Iq (Typ) (uA)
Shutdown Current (Typ) (uA)
Iq (Max) (uA)
Features
Package Group
Vin (Min) (V)
Vin (Max) (V)
LM4120 LM4128 LM4128-Q1 LM4132 LM4132-Q1 LM4140
1.8
2.048
2.5
3
3.3
4.096
5   
1.8
2.048
2.5
3
3.3
4.096   
1.8
2.048
2.5
3
3.3
4.096   
1.8
2.048
2.5
3
3.3
4.096   
2.5
3
3.3   
1.024
1.25
2.048
2.5
4.096   
0.2
0.5   
0.1
0.2
0.5
1   
0.1
0.2
0.5
1   
0.05
0.1
0.2
0.4   
0.05
0.1
0.2
0.4   
0.1   
50    100
75   
100
75   
10
20
30   
10
20
30   
3
6
10   
Catalog    Catalog    Automotive    Catalog    Automotive    Catalog   
-40 to 85    -40 to 125    -40 to 125    -40 to 125    -40 to 125    0 to 70   
5    20    20    20    20    8   
160    60    60    60    60    230
265   
2    3    3    3    3    0.1   
275    100    100    100    100    320
375
350
400   
Enable pin    Enable pin    Enable pin    Enable pin    Enable pin    Enable pin   
SOT-23    SOT-23    SOT-23    SOT-23    SOT-23    SOIC   
2    2.2    2.2    2.2    2.2    1.8   
12    5.5    5.5    5.5    5.5    5.5