The LT3011 is a high voltage, micropower, low dropout linear regulator. The device is capable of supplying 50mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered high voltage systems, the low quiescent current (46μA operating and 1μA in shutdown) is well controlled in dropout, making the LT3011 an ideal choice. The LT3011 includes a PWRGD flag to indicate output regulation. The delay between regulated output level and flag indication is programmable with a single capacitor. The LT3011 also has the ability to operate with very small output capacitors; it is stable with only 1μF on the output. Small ceramic capacitors can be used without the addition of any series resistance (ESR) as is common with other products.
The LT3011 linear regulator is designed for battery‑powered high‑voltage systems. It offers a wide input range of 3 V to 80 V, low quiescent current (46 pA) and a low dropout of 300 mV, making it suitable for low‑power applications. The device includes a programmable Power‑Good (PWRGD) flag, reverse‑battery protection, and can operate with very small output capacitors (as low as 1 pF).
Pin functions are detailed for each package option, with the ADJ pin providing a 1.24 V reference and an adjustable output range of 1.24 V to 60 V. The exposed pad and ground pins must be soldered directly to the PCB for optimal thermal performance. Package options include a 12‑lead MSOP and a 10‑lead DFN, both thermally enhanced.
| Input voltage range | 3 V to 80 V |
|---|---|
| Maximum output current | 50 mA |
| Dropout voltage (typical at 1 mA) | 150 mV |
| Quiescent current (operating) | 46 pA |
| Adjustable output range | 1.24 V to 60 V |
| Power‑Good (PWRGD) flag | Programmable delay, open‑collector |
| Reverse‑battery protection | Enabled |
| Package options | 12‑lead MSOP and 10‑lead DFN (3 mm × 3 mm) |
The typical dropout voltage at a 1 mA load is 150 mV.
In shutdown the LT3011 draws about 5 pA of quiescent current.
The PWRGD signal is available on Pin 5/Pin 6.