Ideal for space critical applications, the LM4051 precision voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SOT-23 surface-mount package. The LM4051’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4051 easy to use. Further reducing design effort is the availability of a fixed (1.225V) and adjustable reverse breakdown voltage. The minimum operating current is 60 µA for the LM4051-1.2 and the LM4051-ADJ. Both versions have a maximum operating current of 12 mA. The LM4051 comes in three grades (A, B, and C). The best grade devices (A) have an initial accuracy of 0.1%, while the B-grade have 0.2% and the C-grade 0.5%, all with a tempco of 50 ppm/˚C guaranteed from −40˚C to 125˚C. The LM4051 utilizes fuse and zener-zap trim of reference voltage during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) at 25˚C.
The LM4051 precision voltage reference is offered in a sub‑miniature 8 mm × 1.3 mm SOT‑23 surface‑mount package. It eliminates the need for an external stabilizing capacitor and tolerates capacitive loads, making it easy to integrate. Two versions are available: a fixed 1.225 V output and an adjustable output, with a minimum operating current of 60 pA and a maximum of 12 mA.
The device provides grades A, B, and C with initial accuracy of 0.1 %, 0.2 % and 0.5 % respectively, a temperature coefficient of 50 ppm/°C, and low output noise of 20 µV rms (10 Hz‑10 kHz). It is suited for portable battery‑powered equipment, data acquisition, instrumentation, automotive, medical and other applications.
| Fixed output voltage | 1.225 V |
|---|---|
| Minimum operating current | 60 pA |
| Maximum operating current | 12 mA |
| Temperature coefficient | 50 ppm/°C |
| Package | SOT‑23 |
The fixed reverse breakdown voltage option is 1.225 V.
The industrial temperature range is –40 °C to +85 °C.
No, the LM4051 operates without an output capacitor.
The device can source up to 12 mA of output current.