- 5V, 3V and 3.3V versions
- The output voltage accuracy is high
- Guaranteed 100mA output current
- Very low quiescent current
- Low dropout voltage
- Very urgent load and line adjustments
- Very low temperature coefficient
- Use as a voltage regulator or reference
- A stable minimum capacitance is required
- Current and thermal limits
- Stable Low ESR Output Capacitors (10MΩ to 6Ω)
illustrate
The LP2950 and LP2951 are micropower voltage regulators with very low quiescent current (75μA typical) and very low dropout voltage (typical values less than 40mV at light load and 380mV difference). 100 milliamps). They are ideal for battery-powered systems. In addition, the LP2950/LP2951 dropout only slightly increases the quiescent current, extending battery life.
The LP2950-5.0 is available in a surface-mount D-Pak package and is compatible with the popular 3-pin TO-92-pin package for older 5V regulators. The 8-lead LP2951 is available in plastic, ceramic dual in-line, LLP, or metal can packages and provides additional system functionality.
One of the features is an error flag output, warning of low output voltage, usually caused by a drop in the input of the battery. It can be used for power-on reset. The second feature is the logic-compatible shutdown input, which turns the regulator on and off. In addition, some may be a 5V, 3V, or 3.3V output (depending on version), or programmed to resist the external from 1.24V to 29V pin-bound.
The well-designed LP2950/LP2951 minimizes all error budget contributions. This includes tight initial tolerances (0.5% typical), very good load and line regulation (0.05% typical) and very low output voltage temperature coefficients to make a portion of the low power voltage reference.
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