LM4120

精密微功耗低压降电压基准

The 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 for full specifications over the extended temperature range. The LM4120 is available in a standard 5-pin SOT-23 package.

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Small SOT23-5 Package

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Low Dropout Voltage: 120 mV Typical at 1 mA

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High Output Voltage Accuracy: 0.2%

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Source and Sink Current Output: ±5 mA

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Supply Current: 160 µA Typical

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Low Temperature Coefficient: 50 ppm/°C

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Enable Pin

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Fixed Output Voltages: 1.8, 2.048, 2.5, 3, 3.3,

4.096, and 5 V

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Industrial Temperature Range: −40°C to 85°C

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For Extended Temperature Range, −40°C to

125°C, Contact TI