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Texas Instruments LM78L05ITPX/NOPB
- Part No.:
- LM78L05ITPX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
LM78L05ITPX/NOPB.pdf
- Description:
- IC REG LINEAR 5V 100MA 8USMD
- Quantity:
- Payment:
- Shipping:
Inventory:9,146
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Product details
Overview
LM78L05ITPX/NOPB from Texas Instruments is a 100mA fixed-output linear voltage regulator delivering +5.0V with ±2.5% output tolerance over temperature, supporting input voltages up to 30V (legacy chip) and featuring internal thermal overload protection and current limiting. It operates across –40°C to 125°C junction temperature in the thin DSBGA (YPB) package and is used for local regulation in portable instrumentation and LED lighting.
For engineers reviewing the LM78L05ITPX/NOPB datasheet, LM78L05ITPX/NOPB pinout, LM78L05ITPX/NOPB application, or LM78L05ITPX/NOPB equivalent, this page provides verified specifications, package-confirmed pin functions, thermal performance data, and validated alternative options for low-power analog and digital subsystems requiring stable 5V biasing.
Technical Context
The LM78L05ITPX/NOPB belongs to the legacy/new dual-version LM78Lxx series and is explicitly confirmed as compatible with both legacy and new chip electrical characteristics per Section 5.6 of the datasheet. Its architecture integrates pass transistor, error amplifier, reference, and protection circuitry in a monolithic IC without requiring external compensation components.
This device implements fixed-output regulation using an internal bandgap reference and feedback loop that maintains output stability under load transients up to 100mA. Thermal shutdown activates when junction temperature exceeds 150°C (new chip) or 125°C (legacy), and current limiting caps peak output at 140mA (legacy) or 175mA (new chip) - both applicable to LM78L05ITPX/NOPB per datasheet Table 5.6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.0V ±2.5% (TJ = full range, IO = 1–70mA), enabling reliable logic-level supply for microcontrollers and sensors |
| Max Input Voltage | 30V (recommended operating), with 35V absolute maximum - supports wide-input industrial and battery-derived supplies |
| Output Current | 100mA continuous - sufficient for low-power analog circuits, display drivers, and sensor signal conditioning stages |
| Quiescent Current | 3–5mA (TJ = 25°C) - minimizes standby power loss in always-on embedded systems |
| Thermal Shutdown | Activates at TJ ≥ 125°C (legacy spec applies to LM78L05ITPX/NOPB per datasheet) - prevents permanent damage during overload or poor heatsinking |
| Ripple Rejection | 47–62dB at 120Hz (VIN = 8–16V) - suppresses AC line noise and switching supply ripple in mixed-signal designs |
| Dropout Voltage | 1.3–1.9V (IO = 1–70mA, TJ = 25°C) - defines minimum VIN–VOUT differential needed to sustain regulation |
Pinout & Package
LM78L05ITPX/NOPB uses the YPB (thin DSBGA, 8-pin) package measuring 1.30mm × 1.30mm. This ultra-compact wafer-level chip-scale package enables high-density PCB layouts in space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (A2, A3) | Regulated output voltage node | Delivers stable +5V to load; requires 0.1µF ceramic capacitor placed adjacent to VOUT and GND pins for transient response |
| GND (C2, C3) | Power ground reference | Common return path for input/output currents; must be low-impedance and thermally coupled to PCB plane for thermal management |
| VIN (A1, B1) | Unregulated input supply node | Accepts 5.1–30V DC input; requires 0.33µF capacitor near VIN/GND to suppress source inductance-induced ringing |
| NC (B3, C1) | No-connect terminal | Internally unconnected; must remain floating - no routing or soldering permitted |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitors required for stability | Eliminates need for compensation network - simplifies layout and reduces BOM count in cost-sensitive designs |
| Internal current limiting | Clamps peak output to 140mA (legacy spec), protecting downstream circuitry during short-circuit events |
| Thermal overload protection | Shuts down regulator when TJ reaches 125°C, then auto-recovers upon cooling - enhances system reliability |
| Wide operating junction temperature | –40°C to 125°C range supports deployment in automotive cabin modules and industrial controllers |
| Low output impedance vs Zener+resistor | Improves PSRR and load regulation by two orders of magnitude - critical for noise-sensitive analog front-ends |
Applications
| Portable Instrumentation | LED Lighting |
|---|---|
Use Scenario: Powering handheld multimeters, gas detectors, and portable oscilloscopes with battery or USB input. IC Role / Device Role / Timing Role: Local +5V LDO regulator providing clean bias for ADCs, op-amps, and microcontroller peripherals. Use Value: Stable 5V rail ensures measurement accuracy and eliminates need for external filtering components. |
Use Scenario: Driving indicator LEDs and status backlighting in smart home devices and industrial HMI panels. IC Role / Device Role / Timing Role: Constant-voltage source for current-limited LED strings via external resistors. Use Value: Low quiescent current extends battery life; thermal shutdown prevents LED driver failure during ambient overheating. |
| Servo & Stepper Drives | Appliances |
Use Scenario: Supplying logic-level control circuitry (e.g., gate drivers, position feedback ICs) in compact motor control modules. IC Role / Device Role / Timing Role: Isolated 5V rail decoupled from noisy high-current motor power paths. Use Value: High PSRR rejects switching noise from half-bridge drivers, preventing false triggering of digital inputs. |
Use Scenario: Providing regulated 5V for microcontroller-based control boards in washing machines, microwaves, and HVAC systems. IC Role / Device Role / Timing Role: Primary logic supply for MCU, display, and sensor interface subsystems. Use Value: Wide input range accommodates unregulated 12–24V appliance rails; thermal protection guards against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM78L05ACZ/LFT1 | TO-92 package (LP), 0°C to 125°C operating range, legacy chip specs only | Through-hole assembly; lower thermal resistance (158.7°C/W RθJA) but larger footprint | Select for manual assembly, prototyping, or legacy board refresh where TO-92 is already routed |
| TLV70550DBVR | 500mA output, 200mV dropout, SOT-23-5 package, 1.8–5.5V input range | Higher current, lower dropout, but requires external output capacitor and lacks built-in thermal shutdown | Select when >100mA load or <1V VIN–VOUT headroom is required; verify external capacitor stability |
Compared with LM78L05ACZ/LFT1, LM78L05ITPX/NOPB offers smaller size and wider temperature range; compared with TLV70550DBVR, it trades higher dropout and lower current for zero-external-component operation and integrated protection - making it optimal for ultra-low-BOM-count, thermally constrained 100mA applications.
Availability
LM78L05ITPX/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, LED lighting, and appliance control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM78L05ITPX/NOPB 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, embedded processing, and connectivity technologies, with decades of expertise in power management ICs.
The LM78Lxx series was designed for cost-effective, robust local regulation in space- and power-constrained systems - targeting portable, industrial, and consumer electronics needing simple, reliable fixed-voltage supplies.
FAQ
What is the maximum input voltage rating for LM78L05ITPX/NOPB?
The LM78L05ITPX/NOPB has a recommended maximum input voltage of 30V and an absolute maximum rating of 35V per the legacy chip specification confirmed in Section 5.1 of the datasheet. Exceeding 35V risks permanent damage, and operation above 30V may degrade long-term reliability even if within absolute limits.
Does LM78L05ITPX/NOPB require external capacitors for stability?
No, LM78L05ITPX/NOPB does not require external capacitors for stability - its internal design ensures unconditional stability. However, a 0.33µF input capacitor and 0.1µF output capacitor are recommended to improve transient response and suppress noise, as specified in Section 5.4 of the LM78L05ITPX/NOPB datasheet.
What is the operating junction temperature range for LM78L05ITPX/NOPB?
The LM78L05ITPX/NOPB is rated for an operating junction temperature range of –40°C to 125°C, consistent with the legacy chip specification for the YPB (DSBGA) package variant. This range is validated in Section 5.4's Recommended Operating Conditions table and supports use in automotive and industrial environments.
How does thermal shutdown work on LM78L05ITPX/NOPB?
LM78L05ITPX/NOPB incorporates internal thermal shutdown that disables the output when junction temperature reaches approximately 125°C. The device remains latched off until temperature falls below the hysteresis threshold (~110°C), then resumes normal regulation - protecting against sustained overload or inadequate PCB heatsinking.
Is LM78L05ITPX/NOPB pin-compatible with other LM78L05 variants?
No - LM78L05ITPX/NOPB uses the 8-pin YPB DSBGA package with non-standard pinout (VOUT/A2,A3; GND/C2,C3; VIN/A1,B1; NC/B3,C1), differing electrically and physically from SOIC (D), SOT-89 (PK), and TO-92 (LP) variants. Direct replacement requires PCB redesign due to footprint and soldering method incompatibility.
LM78L05ITPX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 3 mA
- Current - Supply (Max):
- -
- PSRR:
- 62dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA
LM78L05ITPX/NOPB FAQ
1.How can I place an order for LM78L05ITPX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM78L05ITPX/NOPB 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 LM78L05ITPX/NOPB reliable?
The price and inventory of LM78L05ITPX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM78L05ITPX/NOPB is usually 5 days.
3.What payment methods are accepted for LM78L05ITPX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM78L05ITPX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM78L05ITPX/NOPB?
LM78L05ITPX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM78L05ITPX/NOPB 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 LM78L05ITPX/NOPB?
For technical support, including LM78L05ITPX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM78L05ITPX/NOPB requirements.
6.How does Aetrix verify that LM78L05ITPX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM78L05ITPX/NOPB 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 LM78L05ITPX/NOPB meets industry standards.
7.What is the process for return or replacement of LM78L05ITPX/NOPB?
All LM78L05ITPX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM78L05ITPX/NOPB, 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 LM78L05ITPX/NOPB part is unused and in its original packaging.
Return procedure for LM78L05ITPX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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