The MAX16999 linear regulator operates from a 2.5V to 5.5V input voltage and delivers 100mA continuous load current with a low quiescent current typically around 13µA. The output voltage is preset to internally trimmed voltages in the 0.5V to 3.3V range (see the Selector Guide). An active-low, open-drain reset output remains low for a programmable timeout delay after the output voltage reaches regulation. The reset timeout is pro- grammed by an external capacitor connected to CRES. This device also features logic-controlled shutdown, and short-circuit and thermal-overload protection. The typical applications are multimedia, telematics, and motor control microcontrollers (µCs) with always-on requirements. The MAX16999 is used as a parallel, low- quiescent supply to power the core or interrupt section of µCs during sleep mode. It can also be used to sup- ply a timer or memory during µC shutoff. The adjustable POR delay assists with power-supply sequencing. Applications include industrial SDRAM power supplies, keep-alive timers, and handheld/portable devices.
The MAX16999 linear regulator operates from a 2.5 V to 5.5 V input and provides preset output voltages from 0.5 V to 3.3 V with a typical quiescent current of about 13 µA. It includes logic‑controlled enable, an active‑low reset output, adjustable power‑on‑reset timing, and protection features such as short‑circuit and thermal‑overload protection.
Typical applications include SDRAM power supplies, keep‑alive timers, and portable devices that require always‑on low‑power operation. The device can be used in parallel with a higher‑current supply to improve efficiency during sleep modes.
| Input Voltage Range | 2.5 V to 5.5 V |
|---|---|
| Output Voltage Range | 0.5 V to 3.3 V (preset) |
| Maximum Output Current | 100 mA |
| Quiescent Current (typical) | 13 µA |
| Operating Temperature Range | -40 °C to +125 °C |
| Thermal‑Shutdown Temperature | +165 °C |
The typical quiescent current is about 13 µA.
It provides preset output voltages from 0.5 V to 3.3 V.
The POR timeout is programmed by an external capacitor connected to the CRES pin.
The absolute maximum rating for the input is 5.5 V.