The LT3050EDDB-5 series are micro-power, low noise, low dropout voltage (LDO) linear regulators. The devices supply 100mA of output current with a dropout voltage of 340mV. A 10nF bypass capacitor reduces output noise to 30μVRMS in a 10Hz to 100kHz bandwidth and soft-starts the reference. The LT3050’s ±45V input voltage rating combined with its precision current limit and diagnostic functions make the IC an ideal choice for robust, high reliability applications.
A single resistor programs the LT3050’s current limit, accurate to ±5% over a wide input voltage and temperature range. A single resistor programs the LT3050’s minimum output current monitor, useful for detecting open-circuit conditions. The current monitor function sources a current equal to 1/100th of output current. A logic FAULT pin asserts low if the LT3050EDDB-5 is in current limit, operating below its minimum output current (open-circuit) or is in thermal shutdown.
The LT3050EDDB-5 optimizes stability and transient response with low ESR ceramic capacitors, requiring a minimum of 2.2μF. The LT3050EDDB-5 is available in fixed output voltages of 3.3V and 5V, and as an adjustable version with an output voltage range down to the 0.6V reference.The LT3050EDDB-5 is available in the thermally-enhanced 12-Lead 3mm × 2mm DFN and MSOP packages.
Feature
- Output Current Monitor: 1/100th of IOUT
- Fault Indicator: Current Limit, Minimum IOUT or Thermal Limit
- Output Current: 100mA
- Dropout Voltage: 340mV
- Input Voltage Range: 1.6V to 45V
- Programmable Precision Current Limit: ±5%
- Programmable Minimum IOUT Monitor
- Low Noise: 30μVRMS (10Hz to 100kHz)
- Adjustable Output (VREF = VOUT(MIN) = 0.6V)
- Fixed Output Voltages: 3.3V, 5V
- Output Tolerance: ±2% Over Line, Load and Temperature
- Stable with Low ESR, Ceramic Output Capacitors (2.2μF minimum)
- Shutdown Current: <1μA
- Reverse-Battery, Reverse-Output and Reverse-Current Protection
- Thermal Limit Protection
- 12-Lead 3mm × 2mm DFN and MSOP Packages
Applications
- Protected Antenna Supplies
- Automotive Telematics
- Industrial Applications (Trucks, Forklifts, etc.)
- High Reliability Applications
(Picture: Pinout)
