Summary of A High Voltage LDO regulator
The LT3061 is a micropower, low-noise LDO regulator supporting 1.6V to 45V input with 100mA output. It features adjustable output via a 600mV reference, single-capacitor soft-start, and reverse battery protection. With low quiescent current (45μA) and shutdown current (<3μA), it offers high efficiency and noise performance in compact DFN or MSOP packages.
Parts used in the LT3061 Project:
- LT3061 LDO Regulator
- External Capacitor (minimum 3.3μF)
- Soft-Start Reference Capacitor
- 8-Lead 2mm × 3mm DFN Package
- MSOP Package
LT3061 – 45V VIN, Micropower, Low Noise, 100mA LDO with Output Discharge
Features
- Input Voltage Range: 1.6V to 45V
- Output Current: 100mA
- Output Discharge
- Quiescent Current: 45μA
- Dropout Voltage: 250mV
- Low Noise: 30μVRMS (10Hz to 100kHz)
- Adjustable Output (VREF = 600mV)
- Output Tolerance: ±2% Over Load, Line, and Temperature
- Single Capacitor Soft-Starts Reference and Lowers Output Noise
- Shutdown Current: < 3μA
- Reverse Battery Protection
- Current Limit Foldback and Thermal Limit Protection
- 8-Lead 2mm × 3mm DFN and MSOP Packages
Description
The LT®3061 is a micropower, low dropout (LDO) linear regulator that operates over a 1.6V to 45V supply range. The device supplies 100mA of output current with a typical dropout voltage of 250mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality. The LT3061’s quiescent current is merely 45μA and provides fast transient response with a minimum 3.3μF output capacitor. In shutdown, quiescent current is less than 3μA and the reference soft start capacitor is reset.
For more detail: A High Voltage LDO regulator
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What is the input voltage range of the LT3061?
The device operates over an input voltage range of 1.6V to 45V. -
How much output current does the LT3061 supply?
The LT3061 supplies 100mA of output current. -
Does the LT3061 require multiple capacitors for operation?
No, a single external capacitor provides programmable low noise reference performance and output soft-start functionality. -
What is the quiescent current during normal operation?
The quiescent current is merely 45μA. -
Can the output voltage be adjusted?
Yes, the output is adjustable with a VREF of 600mV. -
What is the shutdown current level?
In shutdown, the quiescent current is less than 3μA. -
Does the LT3061 offer reverse battery protection?
Yes, the device includes reverse battery protection. -
What package options are available for the LT3061?
The device comes in 8-Lead 2mm × 3mm DFN and MSOP packages.
