Texas Instruments LM2991 MWC
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.67 | $2.67 |
| 15+ | $2.59 | $38.85 |
| 25+ | $2.53 | $63.25 |
| 50+ | $2.39 | $119.50 |
| 100+ | $2.11 | $211.00 |
| N+ | $0.42 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Active |
| Output Type | Negative |
| Number of Regulators | Adjustable |
| Voltage - Input (Max) | -26V |
| Voltage - Output (Min/Fixed) | -3V |
| Voltage - Output (Max) | -24V |
| Voltage Dropout (Max) | 1V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | - |
| Current - Supply (Max) | 5 mA |
| PSRR | 60dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | Die |
| Supplier Device Package | Wafersale |
| ROHS |  |
The Texas Instruments LM2991 MWC is an adjustable negative-output low dropout regulator capable of delivering up to 1A. It supports output voltages down to -24V with a dropout of just 1V at full load. With a PSRR of 60dB at 1kHz, it provides clean negative rails for analog and RF applications. This version is offered in a wafersale (bare die) format for hybrid and module integration.
- Adjustable Negative Output: Flexible output range down to -24V for various applications.
- Low Dropout: 1V dropout at 1A maximizes efficiency in negative rail designs.
- Good Ripple Rejection: 60dB PSRR at 1kHz ensures clean output for sensitive analog circuits.
- Wafer-Level Packaging: Ideal for custom hybrid circuits and space-constrained modules.
Negative Rail for Op-Amps
Generate a clean negative supply rail for operational amplifiers in audio and instrumentation circuits. The adjustable output down to -24V provides flexibility.
Biasing for RF Power Amplifiers
Provide a stable negative gate bias voltage for RF power amplifiers. The 60dB PSRR at 1kHz ensures minimal noise injection.
LCD Display Contrast Control
Supply a negative voltage for LCD display contrast adjustment. The adjustable output allows precise tuning for optimal display performance.
Telecom Line Drivers
Power negative supply rails in telecom line driver circuits. The 1A current capability supports moderate load requirements.
Industrial Sensor Interfaces
Provide a negative reference for industrial sensor signal conditioning. The low dropout of 1V ensures operation from a modest negative supply.
Battery-Powered Negative Supplies
Create a negative rail from a battery using a charge pump and this LDO. The low quiescent current helps extend battery life.
- Q: What is the output voltage of the LM2991 MWC?
- A: The output voltage is adjustable, with a range down to -24V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage is negative, with a minimum of -3V (i.e., more negative than -3V).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1V at a 1A load.
- Q: What is the PSRR?
- A: The PSRR is 60dB at 1kHz.
- Q: What package is available?
- A: This version is available in a Wafersale (die) form.
LM2991 MWC.pdf
- Q: What is the output voltage of the LM2991 MWC?
- A: The output voltage is adjustable, with a range down to -24V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage is negative, with a minimum of -3V (i.e., more negative than -3V).
- Q: What is the dropout voltage?
- A: The dropout voltage is 1V at a 1A load.
- Q: What is the PSRR?
- A: The PSRR is 60dB at 1kHz.
- Q: What package is available?
- A: This version is available in a Wafersale (die) form.
