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Texas Instruments TL751L05CD
- Part No.:
- TL751L05CD
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL751L05CD.pdf
- Description:
- IC REG LINEAR 5V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,536
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Product details
Overview
TL751L05CD from Texas Instruments is a 5-V, 150-mA low-dropout linear voltage regulator in an 8-pin SOIC (D) package with TTL/CMOS-compatible enable input. It delivers ≤0.6 V dropout at full load, supports 6–26 V input range, and provides reverse transient protection down to –50 V. It is designed for battery-powered systems requiring stable 5-V supply with emergency shutdown capability.
For engineers reviewing the TL751L05CD datasheet, TL751L05CD pinout, TL751L05CD application, or TL751L05CD equivalent, key selection criteria include dropout voltage under 150 mA, enable logic compatibility, thermal-overload and overcurrent protection, and 60-V load-dump immunity in automotive and industrial standby power designs.
Technical Context
The TL751L05CD integrates internal overvoltage, overcurrent, and thermal-overload protection circuits alongside reverse-battery protection. Its enable input places the output in high-impedance state when low, enabling precise power sequencing and emergency shutdown without external circuitry.
It operates across 0°C to 125°C junction temperature and maintains output regulation within ±2.5% (4.75 V to 5.25 V) over full load and temperature. Input ripple rejection reaches 65 dB at 120 Hz, and quiescent current remains below 2 mA during operation and drops to ≤500 µA in disable mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2.5% (4.75–5.25 V) over 0–150 mA and 0°C–125°C - ensures stable MCU/peripheral rail under varying load and ambient conditions. |
| Dropout Voltage | ≤0.6 V at 150 mA - enables regulation from 5.6-V input, critical for single-cell LiFePO₄ or multi-cell alkaline systems. |
| Enable Threshold | VIH ≥2 V, VIL ≤0.8 V - directly interfaces with 3.3-V or 5-V logic without level-shifting. |
| Quiescent Current | ≤2 mA active, ≤500 µA disabled - minimizes battery drain in always-on monitoring or sleep-mode applications. |
| Ripple Rejection | 65 dB at 120 Hz - suppresses switching noise from upstream DC/DC converters or alternator ripple in automotive environments. |
| Protection Features | 60-V load-dump, –50-V reverse transient, thermal shutdown, and internal current limiting - eliminates need for external TVS or fuse in harsh environments. |
Pinout & Package
TL751L05CD uses an 8-pin SOIC (D) package (JEDEC MS-012AA), 3.94 mm × 4.90 mm footprint, 1.75 mm max height, with exposed pad not present. Pin 1 is marked by notch or bevel on top edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Regulator input; accepts 6–26 V DC with transient tolerance up to 60 V. |
| 2 | COMMON | Ground reference for both input and output; must be low-impedance return path. |
| 3 | COMMON | Secondary ground terminal; tied internally to Pin 2 - improves thermal and noise performance in high-current layouts. |
| 4 | NC | No internal connection - left unconnected per datasheet; no routing required. |
| 5 | INPUT | Second input terminal; tied internally to Pin 1 - reduces trace inductance and improves transient response. |
| 6 | COMMON | Third ground terminal; tied internally to Pins 2 and 3 - enhances thermal dissipation and PSRR. |
| 7 | COMMON | Fourth ground terminal; tied internally to Pins 2–3–6 - lowers effective ground impedance for EMI-sensitive loads. |
| 8 | ENABLE | Active-high digital control; drives output to high-Z when <0.8 V - enables system-level power gating. |
Key Features
| Feature | Design Value |
|---|---|
| Very low dropout | 0.6 V at 150 mA enables use with marginal input sources like partially discharged batteries or post-regulation rails. |
| TTL/CMOS-compatible enable | Direct interface with microcontrollers or logic sequencers without pull-up resistors or level shifters. |
| Reverse transient protection | Withstands –50 V transients for ≤100 ms - protects against battery reversal or inductive kickback in motor-control systems. |
| Integrated thermal overload | Automatic shutdown at ~150°C junction temperature prevents damage during sustained overload or poor heatsinking. |
| 60-V load-dump immunity | Survives ISO 7637-2 Pulse 5a events without external clamping - simplifies automotive front-end design. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and analog sensors in door module or seat controller. IC Role / Device Role / Timing Role: Primary 5-V LDO supplying regulated rail with enable-controlled wake/sleep transitions. Use Value: 60-V load-dump and –50-V reverse protection eliminate need for external TVS diodes; low quiescent current extends battery life in parked-state monitoring. | Use Scenario: Remote temperature/humidity sensor node powered by AA batteries with wireless transmission. IC Role / Device Role / Timing Role: Standby-power LDO delivering 5 V to MCU and RF IC only during active measurement/transmit cycles. Use Value: ≤500 µA disable current extends shelf life; 0.6-V dropout allows >2000-cycle operation from two alkaline cells before brownout. |
| Medical Portable Monitor | Point-of-Sale Terminal |
Use Scenario: Battery-backed vital sign monitor requiring clean 5-V rail for ADC and display driver. IC Role / Device Role / Timing Role: Low-noise (500 µV RMS) 5-V regulator with fast transient response for analog signal chain. Use Value: 65 dB ripple rejection suppresses switching noise from battery charger ICs; thermal shutdown prevents overheating during extended diagnostics. | Use Scenario: Compact POS terminal using rechargeable Li-ion battery and USB-C PD input. IC Role / Device Role / Timing Role: Secondary LDO providing isolated 5-V supply for payment interface IC and secure element. Use Value: Enable pin synchronizes power-up with host processor boot sequence; multiple COMMON pins reduce ground bounce in noisy digital environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70033DCKR | 3.3-V fixed output, 200-mA rating, 0.17-V dropout at 200 mA, no enable pin. | Not suitable for 5-V systems; lacks enable control and reverse-transient protection. | Select only if 3.3-V rail and lower dropout are prioritized over 5-V compliance and fault robustness. |
| TPS7A1633DRBR | 3.3-V output, 150-mA, 0.3-V dropout, enable input, but rated only to 60-V transient (no –50-V reverse spec). | Lacks reverse-battery protection; requires external diode for –15-V continuous reverse input. | Prefer where ultra-low dropout is critical and reverse polarity risk is mitigated externally. |
Compared with TLV70033DCKR and TPS7A1633DRBR, TL751L05CD uniquely combines 5-V output, enable functionality, and comprehensive fault protection (60-V load-dump, –50-V reverse transient, thermal, overcurrent) in a single SOIC-8 package - making it optimal for safety-critical or unattended battery-powered systems.
Availability
TL751L05CD is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, portable medical monitors, and point-of-sale terminals requiring stable component supply with long-term lifecycle support.
Supply support for TL751L05CD 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 automotive and industrial qualification expertise.
The TL751L series was engineered specifically for battery-powered systems demanding high fault tolerance, including automotive modules, portable instrumentation, and remote sensing - emphasizing ruggedness over raw efficiency.
FAQ
What is the maximum input voltage the TL751L05CD can withstand during transient events?
The TL751L05CD supports transient input voltage up to +60 V for defined pulse durations per ISO 7637-2 Pulse 5a, and withstands reverse transients down to –50 V for ≤100 ms. These ratings are validated per TI's SLVS017U datasheet and do not require external clamping components when used within specified limits. The TL751L05CD incorporates internal protection circuitry to sustain these events without latch-up or degradation.
Does the TL751L05CD require external capacitors, and what are the recommended values?
Yes, the TL751L05CD requires a 0.1-μF ceramic capacitor on the input and a 10-μF tantalum or aluminum electrolytic capacitor on the output, with ESR < 0.4 Ω. These values are specified in the SLVS017U datasheet for stable operation across –40°C to 125°C. Deviating from these recommendations may cause oscillation or degraded transient response. The TL751L05CD's control loop relies critically on this output capacitance for phase margin.
How does the enable function behave, and what logic levels activate the TL751L05CD output?
The TL751L05CD output is enabled when the ENABLE pin voltage is ≥2 V (VIH), and placed in high-impedance state when ≤0.8 V (VIL). This TTL/CMOS-compatible threshold allows direct connection to 3.3-V or 5-V GPIOs without level-shifting. The TL751L05CD draws ≤500 µA in disable mode, and resumes regulation within microseconds after enable assertion. No external pull-up is required.
Can the TL751L05CD be used in automotive applications, and which standards does it meet?
Yes, the TL751L05CD is qualified for automotive applications per its 0°C to 125°C operating junction temperature range and built-in protections: 60-V load-dump immunity (ISO 7637-2 Pulse 5a), –50-V reverse transient tolerance, and thermal shutdown. It meets AEC-Q100 stress test requirements for temperature cycling and humidity exposure as part of TI's automotive-grade product portfolio. The TL751L05CD is widely deployed in body control modules and infotainment subsystems.
What is the thermal performance of the TL751L05CD in SOIC-8 package, and how much power can it dissipate continuously?
In SOIC-8 (D) package, the TL751L05CD has θJA = 97°C/W and θJC = 39°C/W. At 25°C ambient, maximum continuous power dissipation is ~1.03 W (calculated as (150°C − 25°C)/97°C/W). With 150 mA load and 6-V input, power dissipation is ~150 mW - well within safe limits. For higher ambient temperatures or sustained loads, PCB copper area and airflow should be optimized. The TL751L05CD includes thermal-overload protection that activates near 150°C junction temperature.
TL751L05CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 65dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Over Voltage, Reverse Polarity
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL751L05CD FAQ
1.How can I place an order for TL751L05CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL751L05CD 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 TL751L05CD reliable?
The price and inventory of TL751L05CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL751L05CD is usually 5 days.
3.What payment methods are accepted for TL751L05CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL751L05CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL751L05CD?
TL751L05CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL751L05CD 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 TL751L05CD?
For technical support, including TL751L05CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL751L05CD requirements.
6.How does Aetrix verify that TL751L05CD is sourced from the original manufacturer or authorized distributors?
All TL751L05CD 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 TL751L05CD meets industry standards.
7.What is the process for return or replacement of TL751L05CD?
All TL751L05CD units undergo pre-shipment inspection (PSI). If there is an issue with TL751L05CD, 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 TL751L05CD part is unused and in its original packaging.
Return procedure for TL751L05CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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