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Texas Instruments LP2950CZ-5.0/T1
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- Part No.:
- LP2950CZ-5.0/T1
- Manufacturer:
- Texas Instruments
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LP2950CZ-5.0/T1.pdf
- Description:
- IC REG LINEAR 5V 100MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,845
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Product details
Overview
LP2950CZ-5.0/T1 from Texas Instruments is a fixed-output 5.0 V micropower low-dropout (LDO) linear voltage regulator in TO-92 package, delivering up to 100 mA output current with 75 µA typical quiescent current, 40 mV typical dropout at light load, and ±0.5% initial output voltage tolerance - designed for battery-powered instrumentation and portable sensing systems.
For engineers reviewing the LP2950CZ-5.0/T1 datasheet, LP2950CZ-5.0/T1 pinout, LP2950CZ-5.0/T1 application, or LP2950CZ-5.0/T1 equivalent, key selection criteria include dropout performance at 100 mA, thermal behavior in TO-92, stability with 1 µF input/2.2 µF output capacitors, and compatibility with legacy 5-V regulator footprints.
Technical Context
The LP2950CZ-5.0/T1 implements a PNP-based pass transistor architecture enabling ultra-low quiescent current that increases only slightly in dropout - critical for extending battery runtime. It uses an internal 1.235 V precision bandgap reference and feedback amplifier to maintain tight regulation without external components.
No shutdown or error flag functionality is present; this is a 3-pin fixed-voltage variant distinct from the 8-pin LP2951-N family. Its design prioritizes simplicity, footprint compatibility with legacy TO-92 regulators, and minimal external BOM (only CIN and COUT required).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±0.5% (typical initial tolerance), stable across −40°C to +125°C junction temperature |
| Max Output Current | 100 mA - fully specified and production-tested; supports moderate-power microcontrollers and analog sensors |
| Dropout Voltage | 380 mV @ 100 mA - enables operation down to VIN = 5.38 V while maintaining regulation |
| Quiescent Current | 75 µA typical - remains near-constant across load and input voltage, minimizing standby power loss |
| Line Regulation | 0.03% typical - ensures <±1.5 mV output shift over 6–30 V input range at fixed load |
| Load Regulation | 0.04% typical - guarantees <±2 mV output shift from 100 µA to 100 mA load |
| Temp Coefficient | 20 ppm/°C - contributes ≤±2.5 mV drift over full operating temperature range |
Pinout & Package
LP2950CZ-5.0/T1 is housed in a 3-pin TO-92 plastic package (4.30 mm × 4.30 mm body), pin-compatible with legacy 5-V linear regulators. The package features vertical lead form and is optimized for through-hole PCB assembly with standard wave-solder profiles.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output terminal | Delivers stable 5.0 V; requires 2.2 µF ceramic or tantalum output capacitor for stability |
| 2 (GND) | Ground reference | Common return path for input, output, and internal circuitry; must be low-impedance |
| 3 (IN) | Unregulated input supply | Accepts 2.3 V to 30 V; minimum headroom defined by dropout voltage at target load |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 380 mV @ 100 mA enables operation from single Li-ion or 6-V lead-acid batteries without derating |
| High accuracy output | ±0.5% initial tolerance and 0.05% line/load regulation support precision analog front-ends |
| Micropower operation | 75 µA quiescent current extends shelf life and runtime in always-on sensor nodes |
| Stable with low-ESR caps | Validated with 10 mΩ to 6 Ω output capacitor ESR - compatible with cost-effective ceramic and polymer types |
| Internal protection | Thermal shutdown and foldback current limiting prevent damage during overload or short-circuit events |
Applications
| Portable Medical Sensors | Industrial Process Transmitters |
|---|---|
|
Use Scenario: Battery-powered wearable ECG monitor with analog signal chain and BLE radio. IC Role / Device Role: Primary 5-V supply for op-amps, ADC, and microcontroller core logic. Use Value: 75 µA quiescent current minimizes battery drain during sleep mode; 380-mV dropout allows >20% longer runtime from 3.7-V Li-ion cell. |
Use Scenario: 4–20 mA loop-powered pressure transmitter in hazardous area. IC Role / Device Role: Local 5-V rail for signal conditioning ICs and digital isolator side. Use Value: ±0.5% output accuracy ensures measurement integrity; TO-92 package fits constrained space behind DIN-rail housing. |
| Smart Utility Meters | Automotive Body Control Modules |
|
Use Scenario: AMI electricity meter with real-time clock, metrology ASIC, and RF sub-GHz PHY. IC Role / Device Role: Secondary regulated supply derived from main 3.3-V rail or backup coin cell. Use Value: Stable 5-V output supports legacy optocouplers and level-shifting interfaces; −40°C to +125°C rating covers outdoor deployment. |
Use Scenario: Door module with window lift motor driver, LED status indicators, and LIN transceiver. IC Role / Device Role: Dedicated 5-V rail for microcontroller I/O and peripheral logic. Use Value: 157.4°C/W RθJA (TO-92) enables conduction cooling via PCB copper; no external shutdown control needed for simple on/off sequencing. |
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 |
|---|---|---|---|
| TLV70550DBVR | 200-mA rated, 25-µA IQ, SOT-23-5 package; includes enable pin but no thermal shutdown flag | Requires PCB redesign (5-pin SOT-23); better for space-constrained designs needing higher current | Select when board area is limited and 200-mA headroom is required; verify layout thermal relief for 125°C operation |
| LM2931AZ-5.0 | 100-mA rated, 1.5-mA IQ, TO-92 package; higher dropout (600 mV @ 100 mA) and looser tolerance (±3%) | Compatible footprint; used where ultra-low IQ is not critical and input voltage margin is ample | Choose for cost-sensitive industrial controls where 5-V accuracy and battery life are secondary to procurement simplicity |
Compared with TLV70550DBVR and LM2931AZ-5.0, the LP2950CZ-5.0/T1 delivers superior output accuracy and lowest quiescent current in a drop-in TO-92 footprint - making it optimal for legacy-replacement and long-life battery applications where regulation stability is non-negotiable.
Availability
LP2950CZ-5.0/T1 is available at Aetrix Electronics and suitable for portable medical devices, industrial process transmitters, smart utility meters, and automotive body control modules requiring stable component supply with long lifecycle assurance.
Supply support for LP2950CZ-5.0/T1 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The LP2950-N series was developed specifically for micropower, low-dropout regulation in battery-critical systems - emphasizing accuracy, thermal robustness, and minimal external component count for high-reliability portable electronics.
FAQ
What is the maximum input voltage rating for LP2950CZ-5.0/T1?
The absolute maximum input voltage for LP2950CZ-5.0/T1 is 30 V, per TI's SNVS764Q datasheet. Operation above 30 V risks permanent damage. For reliable long-term use, the recommended maximum is 30 V under all conditions, including transient spikes - designers should implement input clamping or filtering if system rails exceed 24 V.
Does LP2950CZ-5.0/T1 support ceramic output capacitors?
Yes, LP2950CZ-5.0/T1 is explicitly characterized for stability with ceramic output capacitors ranging from 10 mΩ to 6 Ω ESR, including standard X7R and X5R types. A 2.2 µF ceramic capacitor is sufficient for full-load stability - no series resistor or tantalum substitution is required.
What is the thermal resistance (RθJA) of LP2950CZ-5.0/T1 in its TO-92 package?
The junction-to-ambient thermal resistance (RθJA) for LP2950CZ-5.0/T1 in the TO-92 (LP) package is 157.4°C/W, measured on a JEDEC High-K test board. This value assumes standard PCB copper area; actual thermal performance improves with added copper pour and thermal vias under the leads.
Can LP2950CZ-5.0/T1 be used as a precision voltage reference?
Yes, LP2950CZ-5.0/T1 is suitable as a 5-V precision reference due to its 0.5% initial tolerance, 20 ppm/°C temperature coefficient, and 0.05% line/load regulation. Its 75 µA quiescent current also minimizes self-heating error - confirmed in TI's detailed description section for reference-grade applications.
Is there a shutdown pin on LP2950CZ-5.0/T1?
No, LP2950CZ-5.0/T1 has no shutdown pin. It is a 3-pin fixed-output device (IN, GND, OUT) without enable or logic control. Shutdown capability is exclusive to the 8-pin LP2951-N family. To disable LP2950CZ-5.0/T1, the input supply must be interrupted externally.
LP2950CZ-5.0/T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Box
- Product Status:
- Obsolete
- 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
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LP2950CZ-5.0/T1 FAQ
1.How can I place an order for LP2950CZ-5.0/T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2950CZ-5.0/T1 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/T1 reliable?
The price and inventory of LP2950CZ-5.0/T1 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/T1 is usually 5 days.
3.What payment methods are accepted for LP2950CZ-5.0/T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2950CZ-5.0/T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2950CZ-5.0/T1?
LP2950CZ-5.0/T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2950CZ-5.0/T1 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/T1?
For technical support, including LP2950CZ-5.0/T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2950CZ-5.0/T1 requirements.
6.How does Aetrix verify that LP2950CZ-5.0/T1 is sourced from the original manufacturer or authorized distributors?
All LP2950CZ-5.0/T1 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/T1 meets industry standards.
7.What is the process for return or replacement of LP2950CZ-5.0/T1?
All LP2950CZ-5.0/T1 units undergo pre-shipment inspection (PSI). If there is an issue with LP2950CZ-5.0/T1, 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/T1 part is unused and in its original packaging.
Return procedure for LP2950CZ-5.0/T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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