The MAX6129 micropower, low-dropout bandgap voltage reference combines ultra-low supply current and low drift in a miniature 5-pin SOT23 surface-mount package that uses 70% less board space than comparable devices in an SO package. This series-mode voltage reference sources up to 4mA and sinks up to 1mA of load current. A wide 2.5V to 12.6V supply range, ultra-low 5.25µA (max) supply current, and a low 200mV dropout voltage make these devices ideal for battery-operated systems. An initial accuracy of 0.4% and a 40ppm/°C (max) tem- perature coefficient make the MAX6129 suitable for precision applications. Additionally, an internal com- pensation capacitor eliminates the need for an external compensation capacitor and ensures stability with load capacitances up to 10µF. The MAX6129 provides six output voltages of 2.048V, 2.5V, 3V, 3.3V, 4.096V, and 5V. The MAX6129 is avail- able in a 5-pin SOT23 package and in die form.
The MAX6129 is a micropower, low‑dropout bandgap voltage reference in a 5‑pin SOT23 package. It provides six fixed output voltages (2.048 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 V) and operates from 2.5 V to 12.6 V while drawing only 5.25 µA (max) supply current.
Key specifications include a 200 mV dropout voltage, ±0.4 % initial accuracy, 40 ppm/°C temperature coefficient, 4 mA source and 1 mA sink capability, and an operating temperature range of –40 °C to +85 °C. The device is stable driving capacitive loads up to 10 µF and requires no external compensation capacitor, making it ideal for battery‑powered and space‑constrained applications such as handheld instruments and precision power supplies.
| Supply Voltage Range | 2.5 V – 12.6 V |
|---|---|
| Quiescent Supply Current | 5.25 µA (max) |
| Output Voltages | 2.048 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 V |
| Temperature Coefficient | 40 ppm/°C (max) |
| Dropout Voltage | 200 mV (max) |
| Output Source Current | 4 mA (max) |
| Output Sink Current | 1 mA (max) |
| Package | 5‑pin SOT23 |
| Operating Temperature Range | -40 °C to +85 °C |
The MAX6129 draws a maximum of 5.25 µA supply current.
It provides six fixed outputs: 2.048 V, 2.5 V, 3 V, 3.3 V, 4.096 V, and 5 V.
The dropout voltage is specified as 200 mV.
The temperature coefficient is 40 ppm/°C (max).