LM2991S/NOPB Texas Instruments Integrated Circuit (TO-XXX (Inc. DPAK)) In Stock
LM2991S/NOPB is a negative low dropout adjustable linear voltage regulator from Texas Instruments. It features a 0.6V typical dropout voltage, supports input voltages up to 26V, and delivers adjustable negative output voltages. Available from $2.76 with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- TO-XXX (Inc. DPAK)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LM2991S/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7600(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Negative adjustable output voltage regulator with wide input range up to 26V
- Low dropout voltage of 0.6V typical, 1V maximum for efficient regulation
- Excellent line regulation of 0.04%/V for stable output under varying conditions
- RoHS compliant (Pb-free, JESD-609 e3) in compact TO-DPAK package
- 34 parametric specifications for precise application design
Applications
The LM2991S/NOPB is well suited for powering negative supply rails in analog signal processing circuits, audio amplifiers, and op-amp biasing applications. It is commonly used in industrial control systems and test equipment where a stable, adjustable negative voltage is required. Its low dropout characteristic makes it ideal for battery-powered portable equipment demanding high efficiency.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 1V |
| Dropout Voltage1-Nom | 0.6V |
| Input Voltage-Max | 0.3V |
| Input Voltage-Min | 26V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max (%/V) | 0.04 |
| Load Regulation-Max(%) | 0.4% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 24V |
| Output Voltage1-Min | 3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP5H,.6,67TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Regulator Type | ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 5% |
| Package | TO-XXX (Inc. DPAK) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM2991S/NOPB:
Regulator, 3V Min, 24V Max, 1V Dropout, BIPolar, PSSO5
Frequently Asked Questions
What is the dropout voltage of the LM2991S/NOPB?
The LM2991S/NOPB has a typical dropout voltage of 0.6V and a maximum of 1V. This low dropout characteristic allows the device to maintain regulation even when the input-to-output voltage differential is small, making it suitable for efficient power designs.
What is the maximum input voltage supported by the LM2991S/NOPB?
The LM2991S/NOPB supports a maximum input voltage of 26V, giving designers flexibility across a wide range of negative supply applications including industrial and bench-top equipment operating from higher voltage rails.
What package does the LM2991S/NOPB come in, and is it RoHS compliant?
The LM2991S/NOPB is available in a TO-DPAK (PSSO-5) surface-mount package. It is fully RoHS compliant and Pb-free, meeting JESD-609 e3 requirements, making it suitable for modern lead-free manufacturing processes.
What are typical applications for the LM2991S/NOPB?
Typical applications include negative rail generation for op-amp circuits, analog front-end supplies, audio equipment, industrial control systems, and any design requiring a stable adjustable negative output voltage with low dropout from a Texas Instruments component priced from $2.76.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.4844 | $4.48 |
| 8+ | $3.2886 | $26.31 |
| 24+ | $2.9896 | $71.75 |
| 25+ | $2.9300 | $73.25 |
| 45+ | $2.7800 | $125.10 |
| 90+ | $2.7600 | $248.40 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”