HomedatasheetLP2951-33DR

LP2951-33DR Datasheet

Low Dropout Regulators - LDO
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Description

The LP2950 and LP2951-33DR devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951-33DR is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, theLP2951-33DR outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V. The 8-pin LP2951-33DR also offers additional functionality that makes it particularly suitable for battery-powered applications. For example, a logic-compatible shutdown feature allows the regulator to be put in standby mode for power savings. In addition, there is a built-in supervisor reset function in which the ERROR output goes low when VOUT drops by 6% of its nominal value for whatever reasons – due to a drop in VIN, current limiting, or thermal shutdown. The LP2950 and LP2951-33DR are designed to minimize all error contributions to the output voltage. With a tight output tolerance (0.5% at 25°C), a very low output voltage temperature coefficient (20 ppm typical), extremely good line and load regulation (0.3% and 0.4% typical), and remote sensing capability, the parts can be used as either low-power voltage references or 100-mA regulators. LP2951-33DR Features • Wide Input Range: Up to 30 V• Stable With Low ESR (>12 mΩ) Capacitors• Rated Output Current of 100 mA• Current- and Thermal-Limiting Features• Can Be Used as a Regulator or Reference
Features

Parameters

[{"Name":"Input Voltage MAX:","Value":"30 V"},{"Name":"Output Voltage:","Value":"1.235 V to 30 V, 3.3 V"},{"Name":"Dropout Voltage (Max):","Value":"0.08 V at 100 uA"},{"Name":" Output Current:","Value":"100 mA"},{"Name":"Number of Outputs:","Value":"1"},{"Name":"Maximum Operating Temperature:","Value":"+ 125 C"},{"Name":"Input Voltage MIN:","Value":"+ 2 V"},{"Name":"Input Bias Current (Max):","Value":"0.075 mA"},{"Name":"Minimum Operating Temperature:","Value":"- 40 C"},{"Name":"Reference Voltage:","Value":"1.252 V"}]

Manufacturer information

FAIRCHILD SEMICONDUCTOR

Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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