The MAX6138 is a precision, two-terminal shunt mode, bandgap voltage reference available in fixed reverse breakdown voltages of 1.2205V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V. Ideal for space-critical applica- tions, the MAX6138 is offered in the subminiature 3-pin SC70 surface-mount package (1.8mm X 1.8mm), 50% smaller than comparable devices in SOT23 surface- mount packages. Laser-trimmed resistors ensure precise initial accuracy. With a 25ppm/°C temperature coefficient, the device is offered in three grades of initial accuracy ranging from 0.1% to 0.5%. The MAX6138 has a 60µA to 15mA shunt- current capability with low-dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. The MAX6138 does not require an external stabilizing capacitor while ensuring stability with capacitive loads. The MAX6138 is a higher precision device in a smaller package than the LM4040/LM4050.
The MAX6138 is a precision, two‑terminal shunt‑mode bandgap voltage reference offered in a sub‑miniature 3‑pin SC70 surface‑mount package (1.8 mm × 1.8 mm). It provides selectable fixed reverse breakdown voltages of 1.2205 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V and 5.0 V, making it suitable for portable, battery‑powered equipment, notebook computers, cell phones and industrial process control.
The device features ultra‑small size, 0.1 % (max) initial accuracy, 25 ppm/°C temperature coefficient, a wide operating current range of 60 pA to 15 mA, low output noise (28 µVRMS from 10 Hz to 10 kHz), and does not require an external output capacitor. Ordering information, pin configuration and detailed electrical characteristics are provided for design integration.
| Reverse Breakdown Voltage (options) | 1.2205 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, 5.0 V |
|---|---|
| Initial Accuracy (max) | 0.1 % |
| Temperature Coefficient (max) | 25 ppm/°C |
| Operating Current Range | 60 pA to 15 mA |
| Output Noise (10 Hz‑10 kHz) | 28 µVRMS |
No, the MAX6138 does not require an external stabilizing capacitor.
The device operates from –40 °C to +85 °C.
It is offered in a 3‑pin SC70 surface‑mount package measuring 1.8 mm × 1.8 mm.