Product Descriptions
The LP2950 and LP2951 are micropower voltage regulators that are specifically designed to maintain proper regulation with an extremely low input−to−output voltage differential. These devices feature a very low quiescent bias current of 75 A and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided.
The LP2951 has three additional features. The first is the Error Output that can be used to signal external circuitry of an out of regulation condition, or as a microprocessor power−on reset. The second feature allows the output voltage to be preset to 5.0 V, 3.3 V or 3.0 V output (depending on the version) or programmed from 1.25 V to 29 V. It consists of a pinned out resistor divider along with direct access to the Error Amplifier feedback input. The third feature is a Shutdown input that allows a logic level signal to turn−off or turn−on the regulator output.
Due to the low input−to−output voltage differential and bias current specifications, these devices are ideally suited for battery powered computer, consumer, and industrial equipment where an extension of useful battery life is desirable. The LP2950 is available in the three pin case 29 and DPAK packages, and the LP2951 is available in the eight pin dual−in−line, SOIC−8 and Micro8 surface mount packages. The ‘A’ suffix devices feature an initial output voltage tolerance ±0.5 percent.
Product Features
• Pb−Free Packages are Available
• Low Quiescent Bias Current of 75 A
• Low Input−to−Output Voltage Differential of 50 mV at 100 A and 380 mV at 100 mA
• 5.0 V, 3.3 V or 3.0 V ±0.5 percent Allows Use as a Regulator or Reference
• Extremely Tight Line and Load Regulation
• Requires Only a 1.0 F Output Capacitor for Stability
• Internal Current and Thermal Limiting
• NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
Product Specification
| Attribute | Attribute value |
| ANSM-Part# | ANSM-LP2950ACZ-5.0G |
| Category | Integrated Circuits (ICs) |
| Power Management (PMIC) | |
| Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | |
| Mfr | - |
| Packaging | Bulk |
| Part Status | Active |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage Dropout (Max) | 0.45V @ 100mA |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 120 µA |
| Current - Supply (Max) | 12 mA |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Through Hole |
| Package / Case | TO-226-3, TO-92-3 Long Body |
| Supplier Device Package | TO-92 (TO-226) |
| Base Product Number | LP2950 |
Product Photos
For more product information, please download the PDF
