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Texas Instruments TL751L05CDR
- Part No.:
- TL751L05CDR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL751L05CDR.pdf
- Description:
- IC REG LINEAR 5V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,114
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Product details
Overview
TL751L05CDR from Texas Instruments is a 5-V fixed-output, low-dropout linear voltage regulator in SOIC-8 package with TTL/CMOS-compatible enable input, 0.6-V dropout at 150 mA, ±2% output voltage accuracy over 0°C to 125°C, and integrated reverse-transient (–50 V), load-dump (60 V), and thermal-overload protection - used in automotive body control modules requiring robust standby power.
For engineers reviewing the TL751L05CDR datasheet, TL751L05CDR pinout, TL751L05CDR application, or TL751L05CDR equivalent, this page delivers verified electrical specs, SOIC-8 terminal mapping, battery-powered system design context, and validated alternative regulators for functional replacement in industrial and automotive power management.
Technical Context
The TL751L05CDR implements a PNP pass transistor architecture enabling ultra-low dropout operation and inherent reverse-battery protection without external components. Its ENABLE pin drives the internal pass element into high-impedance shutdown mode when logic-low, reducing quiescent current to ≤500 μA.
Designed for harsh environments, it integrates overvoltage clamp circuitry that limits input transients to 60 V and withstands –50 V reverse input for ≥100 ms. Thermal shutdown activates at ~150°C junction temperature, and internal current limiting holds output short-circuit current to ~350 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% over 0°C to 125°C - ensures stable MCU core supply under wide temperature and load variation. |
| Dropout Voltage | 0.6 V at 150 mA - enables regulation from 5.6-V input, critical for 6-V nominal battery systems near EOL. |
| Quiescent Current | 1–2 mA active; ≤500 μA disabled - supports >1-year battery life in always-on vehicle modules. |
| Ripple Rejection | 60–65 dB at 120 Hz - suppresses alternator ripple in automotive 12-V rail applications. |
| Input Voltage Range | 6 V to 26 V continuous - accommodates cold-crank (6 V), normal operation (13.5 V), and load-dump (26 V) conditions. |
| Protection Features | Reverse transient (–50 V), 60-V load-dump, thermal shutdown, overcurrent - eliminates need for external TVS or foldback circuits. |
| Enable Threshold | VIH ≥2 V, VIL ≤0.8 V - interfaces directly with 3.3-V or 5-V microcontrollers without level-shifting. |
Pinout & Package
TL751L05CDR uses an 8-pin SOIC (D) package per JEDEC MS-012AA, 1.75 mm max height, with exposed pad not electrically connected. Pin 1 is located at top-left corner (quadrant Q1) per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTPUT | Regulated 5-V output node; requires 10-μF low-ESR capacitor (≤0.4 Ω) for stability. |
| 2 | COMMON | Ground reference for regulator feedback and enable logic; must be low-impedance return path. |
| 3 | COMMON | Second ground terminal - paralleled internally with Pin 2; improves thermal and noise performance. |
| 4 | NC | No internal connection - left unconnected; no routing or copper required. |
| 5 | INPUT | Unregulated input supply; accepts 6–26 V with transient tolerance up to 60 V. |
| 6 | COMMON | Third ground terminal - tied internally to Pins 2 and 3; enhances thermal dissipation in SOIC-8. |
| 7 | COMMON | Fourth ground terminal - identical function as Pins 2/3/6; reduces ground loop impedance. |
| 8 | ENABLE | Active-high digital control input; pulls output to high-Z when <0.8 V, drawing ≤500 μA. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 0.6 V at full 150 mA load - sustains regulation during deep battery discharge in telematics units. |
| Integrated Reverse Protection | Withstands –50 V reverse input for 100 ms - eliminates need for external series diode in battery inputs. |
| TTL/CMOS-Compatible Enable | VIH ≥2 V, VIL ≤0.8 V - allows direct interfacing with standard microcontroller GPIO without pull-up or level shifters. |
| Load-Dump Immunity | 60-V transient rating per ISO 7637-2 Pulse 5a - meets automotive OEM surge immunity requirements out-of-box. |
| Thermal Shutdown | Activates at ~150°C junction temperature - prevents damage during sustained overload or poor heatsinking. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Node Power |
|---|---|
Use Scenario: Powering CAN transceiver, microcontroller, and door-lock actuator logic from vehicle 12-V battery with cold-crank and load-dump events. IC Role / Device Role / Timing Role: Primary 5-V LDO regulator with enable-controlled power sequencing for subsystem wake-up and sleep states. Use Value: Eliminates external TVS and reverse-protection diodes while maintaining regulation down to 5.6-V input during cranking. |
Use Scenario: Providing clean 5-V supply to low-power RTU in remote environmental monitoring station powered by Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Standby power regulator with microcontroller-controlled ENABLE for periodic sensor readout and radio transmission. Use Value: 500-μA shutdown current extends 10-year battery life; ±2% output accuracy ensures ADC reference stability. |
| Telematics Control Unit (TCU) | Medical Portable Diagnostic Device |
Use Scenario: Regulating 5-V rail for GPS module, cellular modem, and secure element in fleet-tracking hardware exposed to automotive transients. IC Role / Device Role / Timing Role: Protected primary LDO with fast enable response (<10 μs) for controlled power-up of communication subsystems. Use Value: 60-V load-dump immunity avoids external clamping; SOIC-8 footprint simplifies layout in space-constrained PCBs. |
Use Scenario: Supplying 5-V logic power to microcontroller and display driver in handheld ECG analyzer using rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Low-noise (500 μV RMS), low-dropout regulator ensuring stable operation across battery voltage range (3.0–4.2 V). Use Value: 0.6-V dropout enables full 5-V output until battery reaches 5.6-V cutoff - maximizes usable battery capacity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL750L05CDR | No ENABLE pin; always-on operation; same SOIC-8 package and 5-V output spec. | Not suitable for power-gated systems requiring microcontroller-controlled shutdown. | Select when enable functionality is unnecessary and lowest BOM cost is prioritized. |
| TPS76350DBVR | Lower quiescent current (85 μA typical), higher PSRR (70 dB), but only 100-mA output and no load-dump rating. | Lacks 60-V transient protection; requires external TVS for automotive use. | Choose for ultra-low-power portable electronics where transients are absent and 100-mA load suffices. |
Compared with TL750L05CDR and TPS76350DBVR, TL751L05CDR uniquely combines enable control, 150-mA output, and automotive-grade 60-V load-dump immunity in a single SOIC-8 device - making it optimal for safety-critical, power-gated vehicle subsystems.
Availability
TL751L05CDR is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, telematics units, and portable medical diagnostics requiring stable component supply with long lifecycle assurance.
Supply support for TL751L05CDR 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 delivering analog and embedded processing solutions with broad industrial, automotive, and consumer product portfolios.
The TL751L series was designed specifically for battery-powered automotive and industrial systems needing robust, low-quiescent, enable-controlled LDO regulation - addressing cold-crank, load-dump, and reverse-battery stress without external protection components.
FAQ
What is the maximum input voltage the TL751L05CDR can handle continuously?
The TL751L05CDR supports a continuous input voltage range of 6 V to 26 V. This range covers nominal 12-V automotive systems, cold-crank dips down to 6 V, and regulated bus voltages up to 26 V - all within safe operating limits defined in the TI SLVS017U datasheet.
Does the TL751L05CDR require an output capacitor, and what value is recommended?
Yes, the TL751L05CDR requires a 10-μF output capacitor with equivalent series resistance (ESR) less than 0.4 Ω for stable operation across temperature and load. Tantalum or low-ESR ceramic capacitors meeting this specification ensure proper phase margin and prevent oscillation.
How does the ENABLE pin on TL751L05CDR behave during logic-low assertion?
When the ENABLE pin voltage drops below 0.8 V (VIL), the TL751L05CDR disables its output stage, placing the OUTPUT pin in high-impedance state and reducing quiescent current to ≤500 μA. The device remains fully protected against transients and reverse voltage even in shutdown mode.
Can TL751L05CDR replace TL750L05CDR in an existing design?
No - TL751L05CDR is not a drop-in replacement for TL750L05CDR because it adds an ENABLE pin (Pin 8) and repurposes Pin 4 as NC. The pinout differs: TL750L05CDR uses Pin 4 as OUTPUT, while TL751L05CDR uses Pin 1 as OUTPUT. PCB redesign is required to accommodate the different terminal mapping.
What thermal performance can be expected from TL751L05CDR in SOIC-8 package at 150 mA load?
In SOIC-8 (D) package, TL751L05CDR has θJA = 97°C/W. At 150 mA output with 12-V input (7-V dropout), power dissipation is ~1.05 W, resulting in ~102°C junction rise above ambient. With 25°C ambient, TJ ≈ 127°C - within the 125°C max operating limit only if ambient is ≤23°C or board-level heatsinking is added.
TL751L05CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
TL751L05CDR FAQ
1.How can I place an order for TL751L05CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL751L05CDR 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 TL751L05CDR reliable?
The price and inventory of TL751L05CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL751L05CDR is usually 5 days.
3.What payment methods are accepted for TL751L05CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL751L05CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL751L05CDR?
TL751L05CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL751L05CDR 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 TL751L05CDR?
For technical support, including TL751L05CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL751L05CDR requirements.
6.How does Aetrix verify that TL751L05CDR is sourced from the original manufacturer or authorized distributors?
All TL751L05CDR 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 TL751L05CDR meets industry standards.
7.What is the process for return or replacement of TL751L05CDR?
All TL751L05CDR units undergo pre-shipment inspection (PSI). If there is an issue with TL751L05CDR, 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 TL751L05CDR part is unused and in its original packaging.
Return procedure for TL751L05CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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