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Texas Instruments TLE4275QKTTRQ1
- Part No.:
- TLE4275QKTTRQ1
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TLE4275QKTTRQ1.pdf
- Description:
- IC REG LIN 5V 450MA DDPAK/TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,196
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Product details
Overview
TLE4275QKTTRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LDO regulator delivering 5V ±2.0% output at up to 500mA, with 40V max input, 500mV dropout at 300mA, and 28µA quiescent current - designed for always-on battery-connected systems such as automotive gateways and remote keyless entry modules.
For engineers reviewing the TLE4275QKTTRQ1 datasheet, TLE4275QKTTRQ1 pinout, TLE4275QKTTRQ1 application, or TLE4275QKTTRQ1 equivalent, this page provides verified technical context, package-specific pin functions, power-good delay configuration details, thermal performance data, and validated alternative parts for automotive power management design-in.
Technical Context
The TLE4275QKTTRQ1 implements a low-noise, high-PSRR (60dB @ 100Hz) linear regulation architecture optimized for cold-crank and load-dump resilience in 12V/24V automotive systems. Its programmable power-good delay uses an external capacitor on the DELAY pin to set reset timing, while internal UVLO (2.6–2.82V rising threshold) and thermal shutdown (175°C) ensure robust fault handling.
It supports stable operation with ≥2.2µF ceramic output capacitance (ESR ≤2Ω), achieves ±2% VOUT deviation during 1V/µs line transients, and minimizes overshoot during dropout recovery - distinguishing it from legacy variants requiring ≥22µF and exhibiting higher quiescent current (100µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±2.0% across line, load, and temperature - ensures reliable MCU/CAN transceiver biasing under automotive operating conditions. |
| Max Input Voltage | 40V - withstands ISO 7637-2 load dump transients without external clamping. |
| Output Current | 500mA continuous - sufficient for powering multiple low-power automotive subsystems from single rail. |
| Dropout Voltage | 500mV max at 300mA - enables regulation down to VIN = 5.5V, critical for cold-crank operation. |
| Quiescent Current | 28µA typ at IOUT = 1mA - enables <100µA system standby current in always-on applications. |
| Power-Good Delay | Externally programmable via capacitor on DELAY pin - allows precise reset timing alignment with downstream logic sequencing. |
| Operating Temp | –40°C to +125°C ambient (TA), –40°C to +150°C junction (TJ) - meets AEC-Q100 Grade 1 requirements. |
Pinout & Package
Package: 5-pin DDPAK/TO-263 (KTT), 10.16mm × 15.24mm footprint with exposed thermal pad soldered to GND plane for RθJA = 22.5°C/W (new chip).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input power supply | Accepts 3.0V–40V battery input; requires ≥0.1µF ceramic capacitor to GND for EMI suppression and transient response. |
| OUT | Regulated 5V output | Delivers up to 500mA; stable with ≥2.2µF ceramic output cap (ESR ≤2Ω); place cap within 5mm of pin. |
| GND | Ground reference | Dual GND pins (pins 2 & 3) reduce ground impedance; thermal pad must be connected to large GND copper area. |
| RESET | Open-drain power-good indicator | Active-high signal asserts when VOUT ≥4.25V; requires external pull-up for logic-level interface with microcontrollers. |
| DELAY | Reset delay timing control | Connect capacitor to GND to set delay time; floating for fixed internal delay; avoid grounding to prevent increased GND current. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with full electrical characterization across temperature. |
| Ultra-low quiescent current | 28µA typical at 1mA load enables <100µA system standby budget in battery-connected modules. |
| Programmable power-good delay | Capacitor-based timing on DELAY pin allows application-specific reset assertion delay without firmware intervention. |
| Stable with small ceramic output caps | Supports ≥2.2µF X7R/X5R ceramics (vs legacy 22µF electrolytics), reducing board space and improving reliability. |
| Robust line transient response | ±2% VOUT deviation during 1V/µs slew rate and cold-crank events - maintains downstream logic integrity. |
Applications
| Automotive Gateway Power | Remote Keyless Entry (RKE) Module |
|---|---|
Use Scenario: Always-on 12V battery-supplied gateway managing CAN/LIN communication between domains. IC Role / Device Role / Timing Role: Primary 5V LDO supplying microcontroller, CAN transceivers, and security ICs during sleep and active modes. Use Value: 28µA IQ and 40V input rating enable >10-year battery life in parked state while surviving load dumps. | Use Scenario: Compact RKE fob or vehicle-side receiver requiring ultra-low standby power and cold-crank immunity. IC Role / Device Role / Timing Role: Regulator for ASIL-B-compliant RF receiver and secure authentication processor. Use Value: ±2.0% output accuracy and programmable RESET delay ensure deterministic boot sequencing after wake-up events. |
| Body Control Module (BCM) | Reconfigurable Instrument Cluster |
Use Scenario: Centralized BCM powering door locks, lighting, and sensor interfaces with variable load profiles. IC Role / Device Role / Timing Role: Secondary 5V rail generator for non-safety-critical peripherals, decoupled from main domain controller. Use Value: 500mA output and 500mV dropout allow operation down to 5.5V VIN - sustaining function during engine cranking. | Use Scenario: Digital instrument cluster with TFT display and graphics processor requiring clean, sequenced power rails. IC Role / Device Role / Timing Role: Post-regulator for display timing controller and touch interface ASIC, synchronized via RESET signal. Use Value: Open-drain RESET with adjustable delay enables precise power-up coordination with display driver initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PQDBVRQ1 | 300mA output, 250mV dropout at 200mA, 25µA IQ, SOT-23-5 package | Limited to lower-current loads; lacks programmable power-good delay and cold-crank transient margin | Select when board space is constrained and peak load ≤300mA; verify RESET timing compatibility. |
| TPS7B8750QKVURQ1 | 500mA output, 300mV dropout at 300mA, 28µA IQ, integrated watchdog timer, KTT package | Includes window watchdog and enhanced diagnostics; higher cost and larger die size | Choose when functional safety (ASIL-B) monitoring beyond basic power-good is required. |
Compared with TLV73350PQDBVRQ1 and TPS7B8750QKVURQ1, the TLE4275QKTTRQ1 offers superior cold-crank line transient immunity (±2% deviation at 1V/µs) and proven legacy integration in gateways/RKE, while balancing cost and feature depth for non-safety-critical 5V rails.
Availability
TLE4275QKTTRQ1 is available at Aetrix Electronics and suitable for automotive gateways, remote keyless entry modules, and body control modules requiring stable component supply with AEC-Q100 compliance, long-term lifecycle support, and traceable sourcing.
Supply support for TLE4275QKTTRQ1 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 and embedded processing technologies for automotive, industrial, and personal electronics markets.
The TLE4275-Q1 product line was engineered specifically for automotive battery-connected applications demanding ultra-low quiescent current, high input voltage tolerance, and robust transient immunity - targeting always-on subsystems like gateways and RKE.
FAQ
What is the maximum input voltage rating for the TLE4275QKTTRQ1?
The TLE4275QKTTRQ1 has a maximum input voltage rating of 42V absolute maximum, with recommended operating range up to 40V. This allows it to survive ISO 7637-2 load dump transients common in 12V and 24V automotive systems without external protection circuitry. The device's overvoltage clamp and thermal shutdown further enhance reliability under sustained overvoltage conditions.
Does the TLE4275QKTTRQ1 require an external capacitor on the DELAY pin?
The TLE4275QKTTRQ1 does not require an external capacitor on the DELAY pin - it operates with a fixed internal delay when the pin is left floating. However, connecting a capacitor from DELAY to GND enables programmable reset delay timing, which is essential for synchronizing power-up sequences with downstream microcontrollers or FPGAs. Grounding the DELAY pin must be avoided, as it increases GND current.
What output capacitor value and type are required for stable operation of the TLE4275QKTTRQ1?
The TLE4275QKTTRQ1 requires a minimum 2.2µF ceramic output capacitor (X5R or X7R, 10V+ rating) with ESR ≤2Ω for stability. Unlike legacy versions needing 22µF electrolytic capacitors, this low-value ceramic requirement reduces PCB area, improves reliability, and enhances transient response. A 10µF ceramic is recommended for optimal load step performance in automotive gateways.
How does the TLE4275QKTTRQ1 handle cold-crank conditions?
The TLE4275QKTTRQ1 maintains ±2% output voltage deviation during cold-crank events with 1V/µs input slew rate and sustains regulation down to VIN = 5.5V due to its 500mV dropout at 300mA. Its novel architecture minimizes output overshoot during dropout recovery, ensuring uninterrupted operation of connected MCUs and CAN transceivers - a critical capability validated per AEC-Q100 Grade 1 test conditions.
Is the TLE4275QKTTRQ1 pin-compatible with earlier TLE4275-Q1 variants in TO-252 or HTSSOP packages?
No, the TLE4275QKTTRQ1 is packaged in 5-pin DDPAK/TO-263 (KTT) and is not pin-compatible with the 5-pin TO-252 (KVU) or 20-pin HTSSOP (PWP) variants. While all share identical pin functions (IN, OUT, GND×2, RESET, DELAY), the KTT package has different mechanical dimensions, thermal pad layout, and solder stencil requirements. PCB redesign is required when migrating from KVU or PWP to TLE4275QKTTRQ1.
TLE4275QKTTRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 450mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 22 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
TLE4275QKTTRQ1 FAQ
1.How can I place an order for TLE4275QKTTRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4275QKTTRQ1 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 TLE4275QKTTRQ1 reliable?
The price and inventory of TLE4275QKTTRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4275QKTTRQ1 is usually 5 days.
3.What payment methods are accepted for TLE4275QKTTRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4275QKTTRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4275QKTTRQ1?
TLE4275QKTTRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4275QKTTRQ1 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 TLE4275QKTTRQ1?
For technical support, including TLE4275QKTTRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4275QKTTRQ1 requirements.
6.How does Aetrix verify that TLE4275QKTTRQ1 is sourced from the original manufacturer or authorized distributors?
All TLE4275QKTTRQ1 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 TLE4275QKTTRQ1 meets industry standards.
7.What is the process for return or replacement of TLE4275QKTTRQ1?
All TLE4275QKTTRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4275QKTTRQ1, 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 TLE4275QKTTRQ1 part is unused and in its original packaging.
Return procedure for TLE4275QKTTRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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