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Texas Instruments LP2950CZ-5.0/LFT7
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- Part No.:
- LP2950CZ-5.0/LFT7
- Manufacturer:
- Texas Instruments
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LP2950CZ-5.0/LFT7.pdf
- Description:
- IC REG LINEAR 5V 100MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,697
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Product details
Overview
LP2950CZ-5.0/LFT7 from Texas Instruments is a fixed-output 5.0 V micropower low-dropout (LDO) linear voltage regulator in TO-252 (NDP) package, delivering up to 100 mA output current with 40 mV typical dropout at light load and ±1% output voltage accuracy over temperature. It operates from 2.3 V to 30 V input and targets battery-powered instrumentation, portable sensors, and low-power microcontroller power rails.
For engineers reviewing the LP2950CZ-5.0/LFT7 datasheet, LP2950CZ-5.0/LFT7 pinout, LP2950CZ-5.0/LFT7 application, or LP2950CZ-5.0/LFT7 equivalent, key selection criteria include guaranteed 100-mA output under 380-mV max dropout at full load, 75 µA typical quiescent current, ±1% output tolerance across –40°C to +125°C, and stability with 2.2 µF low-ESR output capacitors.
Technical Context
The LP2950CZ-5.0/LFT7 implements a PNP-based LDO architecture with internal 1.235 V reference and precision error amplifier, enabling tight line regulation (0.03% typical) and load regulation (0.04% typical). Its quiescent current remains stable in dropout-rising only to 140 µA max at –40°C to +125°C-extending battery runtime in deep-discharge conditions.
No shutdown or error flag functionality is present; this is a 3-pin fixed-voltage variant distinct from the 8-pin LP2951-N family. It requires no external feedback network and uses only IN, OUT, and GND terminals for operation with minimal external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±1% over –40°C to +125°C - ensures stable MCU core logic supply without calibration. |
| Max Output Current | 100 mA - sufficient for ultra-low-power microcontrollers (e.g., MSP430, PIC12) and analog sensors. |
| Dropout Voltage | 380 mV max at 100 mA - enables operation down to 5.38 V input, critical for single-cell Li-ion or 2-cell alkaline systems. |
| Quiescent Current | 75 µA typical, 140 µA max over full temp range - minimizes standby power loss in always-on monitoring nodes. |
| Line Regulation | 0.03% typical - maintains output stability despite input ripple or battery sag during pulse loads. |
| Load Regulation | 0.04% typical - holds output within ±2 mV across 100 µA–100 mA load swing. |
| Output Capacitor | 2.2 µF low-ESR ceramic - enables compact, high-reliability layout without tantalum or electrolytic parts. |
Pinout & Package
LP2950CZ-5.0/LFT7 is housed in a surface-mount TO-252 (NDP) package measuring 9.91 mm × 6.58 mm with exposed thermal pad (DAP), rated for 51.3°C/W junction-to-ambient thermal resistance on high-K PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input supply connection | Accepts 2.3 V–30 V unregulated input; requires 1 µF ceramic bypass capacitor close to pin. |
| GND (Pin 2) | Power ground reference | Common return for input/output paths and thermal pad; must be connected to PCB ground plane. |
| OUT (Pin 3) | Regulated 5.0 V output | Delivers up to 100 mA; connects directly to load and 2.2 µF output capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 380 mV max dropout at 100 mA enables use with weak or aging batteries. |
| High accuracy over temperature | ±1% output tolerance from –40°C to +125°C eliminates need for post-manufacturing trimming. |
| Micropower operation | 75 µA typical quiescent current extends shelf life and runtime in battery-critical applications. |
| Stable with low-ESR ceramics | Validated with 2.2 µF X7R/X5R capacitors (10–6 Ω ESR), reducing BOM count and board area. |
| Integrated protection | Foldback current limiting and thermal shutdown prevent damage during short-circuit or overload events. |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor powered by coin cell battery with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Primary 5.0 V power rail for ultra-low-power ADC and BLE radio subsystem. Use Value: 75 µA quiescent current and 380 mV dropout allow operation down to 2.7 V input, maximizing usable battery capacity. | Use Scenario: Remote environmental sensor node logging temperature/humidity every 15 minutes using solar-charged LiFePO₄. IC Role / Device Role / Timing Role: Stable 5.0 V supply for microcontroller and serial flash memory during burst read/write cycles. Use Value: ±1% output accuracy ensures consistent ADC reference and flash programming voltage across wide temperature swings. |
| Smart Utility Meters | Automotive Body Control Modules |
Use Scenario: ANSI C12.22-compliant electricity meter requiring 15-year field lifetime and cold-temperature startup (–40°C). IC Role / Device Role / Timing Role: Regulated 5.0 V source for real-time clock, metrology ASIC, and optical port interface. Use Value: Guaranteed 100 mA output and 140 µA max IQ at –40°C ensure reliable cold-start and sustained pulse-load performance. | Use Scenario: Door module controlling window lift, mirror fold, and LED status indicators in 12 V automotive system. IC Role / Device Role / Timing Role: Secondary 5.0 V rail for microcontroller I/O and CAN transceiver biasing. Use Value: 30 V absolute max input rating and thermal shutdown protect against load-dump transients and ambient heat soak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70033DDCT | 3.3 V fixed output, 200 mA rated, 170 mV dropout at 200 mA, SOT-23-5 package | Not pin-compatible; requires different PCB layout and output voltage rework | Select when higher current or lower dropout is required and 3.3 V rail is acceptable. |
| TPS76350QDBVRQ1 | AEC-Q100 qualified, 5 V fixed, 150 mA, 350 mV dropout at 150 mA, SOT-23-5 | Automotive-grade qualification adds cost and lead time; not drop-in due to 5-pin vs 3-pin footprint | Choose for automotive body electronics where qualification and extended temperature range are mandatory. |
Compared with TLV70033DDCT and TPS76350QDBVRQ1, LP2950CZ-5.0/LFT7 offers proven industrial reliability in TO-252 with minimal external components, lower cost per unit, and simpler layout-ideal for cost-sensitive, space-constrained non-automotive embedded systems requiring 5 V at ≤100 mA.
Availability
LP2950CZ-5.0/LFT7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, smart utility meters, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for LP2950CZ-5.0/LFT7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in power management IC design and manufacturing.
LP2950CZ-5.0/LFT7 belongs to TI's LP295x-N micropower LDO family, engineered specifically for battery longevity and precision regulation in portable, industrial, and instrumentation applications where low IQ and tight voltage tolerance are critical.
FAQ
What is the maximum input voltage rating for LP2950CZ-5.0/LFT7?
The LP2950CZ-5.0/LFT7 has an absolute maximum input voltage rating of 30 V, with recommended operating range from 2.3 V to 30 V. Exceeding 30 V risks permanent damage. This wide input range supports direct connection to unregulated 24 V industrial rails or multi-cell battery stacks while maintaining safe operation under transient overvoltage conditions.
Does LP2950CZ-5.0/LFT7 support shutdown or enable functionality?
No, LP2950CZ-5.0/LFT7 does not include shutdown or enable capability. It is a 3-pin fixed-output variant of the LP295x series. For logic-controlled ON/OFF operation, the 8-pin LP2951-N family (e.g., LP2951ACZ-5.0) must be used instead. LP2950CZ-5.0/LFT7 remains active whenever valid input voltage is applied.
What output capacitor value and type are required for stable operation of LP2950CZ-5.0/LFT7?
LP2950CZ-5.0/LFT7 requires a minimum 2.2 µF ceramic capacitor (X7R or X5R dielectric) at the OUT pin, with ESR between 10 mΩ and 6 Ω. The datasheet validates stability with 2.2 µF-smaller values risk oscillation. Aluminum or tantalum capacitors are not recommended due to ESR and aging characteristics.
Is LP2950CZ-5.0/LFT7 suitable for automotive applications?
LP2950CZ-5.0/LFT7 is not AEC-Q200 qualified and lacks automotive-specific screening or temperature grade certification. While it operates from –40°C to +125°C (junction), it is intended for industrial and commercial use. For automotive body electronics, TI recommends the AEC-Q100 qualified TPS76350QDBVRQ1 as a functional alternative.
How does the thermal performance of LP2950CZ-5.0/LFT7 compare between TO-92 and TO-252 packages?
LP2950CZ-5.0/LFT7 in TO-252 (NDP) achieves 51.3°C/W junction-to-ambient thermal resistance on high-K PCBs-nearly 3× better than the TO-92 (LP) version at 157.4°C/W. This allows sustained 100 mA output at higher ambient temperatures or with reduced heatsinking, making TO-252 the preferred choice for thermally constrained designs.
LP2950CZ-5.0/LFT7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 120 µA
- Current - Supply (Max):
- 14 mA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LP2950CZ-5.0/LFT7 FAQ
1.How can I place an order for LP2950CZ-5.0/LFT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2950CZ-5.0/LFT7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LP2950CZ-5.0/LFT7 reliable?
The price and inventory of LP2950CZ-5.0/LFT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2950CZ-5.0/LFT7 is usually 5 days.
3.What payment methods are accepted for LP2950CZ-5.0/LFT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2950CZ-5.0/LFT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2950CZ-5.0/LFT7?
LP2950CZ-5.0/LFT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2950CZ-5.0/LFT7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LP2950CZ-5.0/LFT7?
For technical support, including LP2950CZ-5.0/LFT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2950CZ-5.0/LFT7 requirements.
6.How does Aetrix verify that LP2950CZ-5.0/LFT7 is sourced from the original manufacturer or authorized distributors?
All LP2950CZ-5.0/LFT7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP2950CZ-5.0/LFT7 meets industry standards.
7.What is the process for return or replacement of LP2950CZ-5.0/LFT7?
All LP2950CZ-5.0/LFT7 units undergo pre-shipment inspection (PSI). If there is an issue with LP2950CZ-5.0/LFT7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LP2950CZ-5.0/LFT7 part is unused and in its original packaging.
Return procedure for LP2950CZ-5.0/LFT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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