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Infineon Technologies TLE42712GNTMA1
- Part No.:
- TLE42712GNTMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
TLE42712GNTMA1.pdf
- Description:
- IC REG LINEAR 5V 550MA TO263-7-1
- Quantity:
- Payment:
- Shipping:
Inventory:4,812
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Product details
Overview
TLE42712GNTMA1 from Infineon Technologies is a 5-V low-drop fixed linear voltage regulator with integrated watchdog, reset generator, and automotive-grade protection. It delivers up to 550 mA output current with ±2% output voltage tolerance (4.90–5.10 V), supports input voltages up to 42 V (65 V transient ≤400 ms), and operates across −40 °C to +150 °C junction temperature-designed for engine control units and body electronics power rails.
For engineers reviewing the TLE42712GNTMA1 datasheet, TLE42712GNTMA1 pinout, TLE42712GNTMA1 application, or TLE42712GNTMA1 equivalent, key selection criteria include its 350 mV typical dropout at 550 mA, integrated 30 kΩ pull-up on open-collector reset output (RO), adjustable reset delay via external capacitor on pin D, watchdog timeout of 40–80 ms, and AEC-Q100 qualification for automotive use.
Technical Context
The TLE42712GNTMA1 implements a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent over-saturation under load. Its reset generator uses a precision charge/discharge circuit on pin D to generate a programmable delay (8–18 ms with 100 nF), while the watchdog monitors rising edges on WI to maintain RO high-state.
Protection logic includes reverse-polarity detection, thermal shutdown at ~170 °C, overvoltage cutoff at 40–46 V, and short-circuit current limiting to 650–800 mA. Inhibit (INH) enables full device shutdown with <25 µA standby current when pulled low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 5.00 V ±2% (4.90–5.10 V); stable regulation across 5–550 mA load and 6–26 V input |
| Dropout voltage | 350 mV typ. at 550 mA; enables operation with minimal headroom in 12 V automotive systems |
| Input voltage range | 6–40 V continuous; withstands 65 V transients ≤400 ms per ISO 7637-2 Pulse 5a |
| Reset delay time | 8–18 ms with 100 nF capacitor on pin D; sets system power-on reset timing window |
| Watchdog period | 40–80 ms with 100 nF capacitor; detects microcontroller lockup via WI rising-edge monitoring |
| Thermal resistance | RthJC = 2 K/W (PG-TO263-7-1); enables >550 mA continuous output with moderate heatsinking |
| Quiescent current | 6 µA at INH = 0 V; supports ultra-low-power sleep mode in vehicle ECU wake-up circuits |
Pinout & Package
Package: PG-TO263-7-1 (D²PAK-7), surface-mount, thermally enhanced variant with exposed drain pad for improved heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Primary VIN connection; requires local 100 nF ceramic decoupling directly to GND |
| 2 (INH) | Inhibit control | Active-high enable; ≥3.5 V turns on regulator; ≤0.8 V forces shutdown and disables all outputs |
| 3 (RO) | Open-collector reset output | Pulled up internally to Q via 30 kΩ; sinks ≥3 mA at 0.2 V for MCU reset assertion |
| 4 (GND) | Power ground | Main return path; connects to PCB ground plane and thermal pad for thermal conduction |
| 5 (D) | Reset delay capacitor node | Charged/discharged by internal current sources to set reset timeout; 100 nF yields 8–18 ms delay |
| 6 (WI) | Watchdog input | Edge-triggered; rising edge resets watchdog timer; no internal pull-up/pull-down |
| 7 (Q) | 5 V regulated output | Delivers up to 550 mA; requires 22 µF low-ESR (≤3 Ω) output capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Integrated watchdog timer | Programmable 40–80 ms timeout via external capacitor; prevents MCU hang-induced system failure |
| Adjustable power-on reset | Delay configurable from 8–18 ms using single capacitor on pin D; eliminates need for external RC network |
| AEC-Q100 qualified | Qualified to Grade 1 (−40 °C to +125 °C ambient) and Grade 0 (−40 °C to +150 °C junction) |
| Reverse polarity protection | Withstands −42 V input without damage; enables robust installation in battery-reversal-prone environments |
| Overvoltage clamp | Shuts down at 40–46 V and recovers after transient; protects downstream 5 V logic from load-dump surges |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Core Rail |
|---|---|
Use Scenario: Supplies 5 V to microcontroller, CAN transceivers, and sensor interfaces in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 5 V LDO with integrated reset and watchdog; provides fault-tolerant power sequencing and MCU supervision. Use Value: Eliminates need for discrete reset IC and external watchdog, reducing BOM count and board space by ≥3 components. | Use Scenario: Powers door module MCUs, LIN transceivers, and LED drivers in centralized body electronics architecture. IC Role / Device Role / Timing Role: Regulator + supervisor IC; delivers stable 5 V while monitoring MCU health via WI and asserting RO during brownout. Use Value: Enables fail-safe door lock/unlock behavior during voltage dips, meeting ISO 16750-2 Class IV requirements. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Powers image signal processor and serializer in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Low-noise 5 V supply with fast reset reaction (<3 µs) and ripple rejection >54 dB at 100 Hz. Use Value: Prevents image corruption during ignition transients; meets CISPR 25 Class 5 conducted emission limits. | Use Scenario: Supplies torque and position sensors in EPS motor control units exposed to high EMI and thermal stress. IC Role / Device Role / Timing Role: High-reliability regulator with RthJC = 2 K/W and overtemperature shutdown at ~170 °C. Use Value: Maintains sensor accuracy at 150 °C junction temperature, supporting ASIL-B functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 5 V automotive LDO with watchdog and reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70750PDBVR | No watchdog or reset generator; 300 mA output; 200 mV dropout; no AEC-Q100 rating | Suitable only for non-safety-critical infotainment peripherals | Select only if watchdog/reset functions are implemented externally and AEC-Q100 is not required. |
| MAX16135ATA+T | 5 V output with watchdog and reset, but 200 mA max output; no reverse polarity protection; RthJA = 120 K/W | Limited to low-power modules like smart junction boxes | Choose when board space is constrained and thermal budget allows higher ambient temperatures. |
Compared with TLV70750PDBVR and MAX16135ATA+T, TLE42712GNTMA1 uniquely combines 550 mA output, integrated watchdog/reset, reverse polarity protection, and AEC-Q100 Grade 0 qualification-making it the only drop-in solution for high-current, safety-critical automotive power rails requiring autonomous fault response.
Availability
TLE42712GNTMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering applications requiring stable component supply across extended automotive lifecycles.
Supply support for TLE42712GNTMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and R&D infrastructure.
The TLE42712GNTMA1 belongs to Infineon's TLE automotive linear regulator family, engineered specifically for fault-tolerant power supply and system supervision in harsh-temperature, high-reliability vehicle subsystems.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE42712GNTMA1 supports continuous input voltage from 6 V to 40 V. It tolerates up to 65 V for ≤400 ms during load-dump transients per ISO 7637-2 Pulse 5a, after which it shuts down and automatically recovers when voltage returns within spec.
How is the reset delay time configured?
Reset delay is set by connecting an external capacitor between pin D and GND. With a 100 nF capacitor, the delay ranges from 8 ms (min) to 18 ms (max) across temperature and process variation. The internal charge current is 8–25 µA, and thresholds are 0.2–0.8 V (VLD) and 1.4–2.3 V (VUD).
Does the RO pin require an external pull-up resistor?
No. Pin RO is an open-collector output with an internal 18–46 kΩ pull-up resistor connected to the Q (5 V) output. This eliminates the need for external components while ensuring compatible logic levels for standard 5 V microcontrollers.
Can the watchdog function operate independently of the reset generator?
Yes. The watchdog circuit activates only after the reset delay expires and RO goes high. It runs autonomously thereafter, discharging the D-capacitor at 1.5–3.5 µA until VD falls below VLDW, triggering RO low. A rising edge on WI at any time resets the discharge cycle and maintains RO high.
TLE42712GNTMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 550mA
- Current - Output:
- 550mA
- Current - Quiescent (Iq):
- 6 µA
- Current - Supply (Max):
- 90 mA
- PSRR:
- 54dB (100Hz)
- Control Features:
- Reset, Watchdog
- Protection Features:
- Over Current, Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-7-1
TLE42712GNTMA1 FAQ
1.How can I place an order for TLE42712GNTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42712GNTMA1 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 TLE42712GNTMA1 reliable?
The price and inventory of TLE42712GNTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42712GNTMA1 is usually 5 days.
3.What payment methods are accepted for TLE42712GNTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42712GNTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42712GNTMA1?
TLE42712GNTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42712GNTMA1 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 TLE42712GNTMA1?
For technical support, including TLE42712GNTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42712GNTMA1 requirements.
6.How does Aetrix verify that TLE42712GNTMA1 is sourced from the original manufacturer or authorized distributors?
All TLE42712GNTMA1 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 TLE42712GNTMA1 meets industry standards.
7.What is the process for return or replacement of TLE42712GNTMA1?
All TLE42712GNTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42712GNTMA1, 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 TLE42712GNTMA1 part is unused and in its original packaging.
Return procedure for TLE42712GNTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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