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Infineon Technologies TLE42664GHTMA2
- Part No.:
- TLE42664GHTMA2
- Manufacturer:
- Infineon Technologies
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
TLE42664GHTMA2.pdf
- Description:
- IC REG LINEAR 5V 100MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:6,430
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Product details
Overview
TLE42664GHTMA2 from Infineon Technologies is a monolithic low-dropout linear voltage regulator delivering a fixed 5 V ±2% output up to 50 mA and ±3% up to 100 mA, with typ. 40 µA quiescent current, enable control, reverse-polarity protection, and overtemperature shutdown - designed for permanent-battery automotive subsystems such as body control modules and sensor interfaces.
For engineers reviewing the TLE42664GHTMA2 datasheet, TLE42664GHTMA2 pinout, TLE42664GHTMA2 application, or TLE42664GHTMA2 equivalent, key selection criteria include dropout voltage (250–500 mV at 100 mA), AEC-Q100 qualification, thermal resistance (RthJC = 17 K/W), wide input range (5.5–40 V), and SOT223-4 package compatibility with legacy TLE4266 variants.
Technical Context
The TLE42664GHTMA2 integrates bandgap reference, error amplifier, pass transistor, and protection circuitry in a single die. Its control loop maintains regulation across -40°C to +150°C junction temperature, with internal saturation sensing triggering overtemperature shutdown at 151–200°C and 25°C hysteresis.
It features an integrated EN pin with 1 MΩ pull-down resistor and logic-level enable thresholds (VEN,ON ≥ 3.5 V, VEN,OFF ≤ 0.8 V), enabling low-power sleep modes. Reverse-polarity protection operates down to -30 V input, and output current limiting activates at 150–500 mA when VQ drops 100 mV from nominal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 5.0 V ±2% (5–50 mA), ±3% (5–100 mA) - ensures stable MCU/sensor supply under varying load and temperature |
| Dropout voltage | 250–500 mV at 100 mA - enables operation with minimal headroom (e.g., 5.5 V input → 5 V out) |
| Quiescent current | Typ. 40 µA - supports >1-year battery standby in always-on automotive modules |
| Input voltage range | 5.5–40 V - withstands cold-crank (5.5 V) and load-dump (40 V) transients per ISO 7637-2 |
| Thermal shutdown | 151–200°C activation, 25°C hysteresis - prevents thermal runaway during overload or poor heatsinking |
| ESD rating | ±3 kV HBM, ±1500 V CDM - meets AEC-Q100 stress requirements for automotive assembly environments |
| Package | PG-SOT223-4 with exposed heat slug - provides 17 K/W junction-to-case thermal path for PCB heatsinking |
Pinout & Package
Package: PG-SOT223-4 (4-pin surface-mount with exposed thermal pad connected internally to GND). Pin 4 is the heat slug/GND terminal, requiring direct PCB copper connection for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Primary power input; requires local 10 µF ceramic capacitor to ground for stability |
| 2 (EN) | Enable | Logic-level control: HIGH ≥3.5 V enables regulator; LOW ≤0.8 V disables with <1 µA off-state current |
| 3 (Q) | Output | Regulated 5 V output; requires 10 µF output capacitor with ESR ≤2 Ω (10 kHz) for loop stability |
| 4 (/GND) | Ground / Heat Slug | Internal GND connection and thermal interface; must be soldered to large PCB copper area for RthJA ≤64 K/W |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | Typ. 40 µA enables >1-year battery life in always-connected automotive modules |
| Reverse-polarity protection | Withstands -30 V input without damage - eliminates need for external series diode |
| Integrated enable function | EN pin with 1 MΩ internal pull-down allows simple microcontroller wake-up control |
| AEC-Q100 qualified | Qualified to Grade 0 (-40°C to +150°C) for engine bay and transmission control applications |
| Short-circuit & overload protection | Current limit triggers at 150–500 mA with automatic recovery after fault removal |
Applications
| Body Control Module (BCM) | Occupant Detection System |
|---|---|
|
Use Scenario: Powering microcontrollers and CAN transceivers in door modules and lighting controllers with constant battery connection. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying logic rails and enabling low-power sleep states via EN pin. Use Value: 40 µA quiescent current minimizes parasitic drain, extending vehicle battery life during extended parking. |
Use Scenario: Supplying capacitive seat sensors and signal-conditioning amplifiers in airbag control units. IC Role / Device Role / Timing Role: Stable 5 V reference source with ±2% accuracy at low loads (<10 mA) for analog front-end precision. Use Value: Tight output tolerance and low noise support high-resolution ADC measurements of occupant weight/position. |
| Engine Management Sensor Interface | Telematics Control Unit (TCU) |
|
Use Scenario: Regulating power for crankshaft position sensors and knock sensors exposed to under-hood temperatures. IC Role / Device Role / Timing Role: High-temp LDO with 150°C shutdown threshold protecting downstream analog circuitry during thermal stress. Use Value: Junction-to-case thermal resistance of 17 K/W enables reliable operation on small heatsink areas near engine blocks. |
Use Scenario: Providing backup power rail for real-time clock and secure boot memory in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Always-on 5 V supply with reverse-polarity and load-dump immunity for critical firmware retention. Use Value: 40 V absolute max input and -30 V reverse rating eliminate need for external TVS or polarity protection components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | Lower IQ (350 nA), but only AEC-Q200 rated (not Q100); max 300 mA output; 2.5–6 V input | Limited to cabin/non-engine-bay use; insufficient for 40 V load-dump immunity | Select only for non-safety-critical, low-power interior modules where ultra-low IQ outweighs qualification gap |
| TLE42744G | Higher IQ (120 µA), same SOT223-4 package and AEC-Q100 Grade 0; 400 mA output capability | Better suited for higher-current loads but increases standby drain by 3× | Prefer when system load exceeds 100 mA and thermal margin permits higher quiescent consumption |
Compared with TLV73350PDBVR and TLE42744G, the TLE42664GHTMA2 uniquely balances AEC-Q100 Grade 0 qualification, 40 µA IQ, 40 V input tolerance, and SOT223-4 footprint - making it optimal for cost-sensitive, battery-permanent automotive nodes requiring full qualification and minimal standby loss.
Availability
TLE42664GHTMA2 is available at Aetrix Electronics and suitable for body control modules, occupant detection systems, and engine management sensor interfaces requiring stable component supply, long-term automotive lifecycle support, and RoHS-compliant manufacturing.
Supply support for TLE42664GHTMA2 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 industrial control solutions, with global manufacturing and automotive qualification infrastructure.
The TLE42664GHTMA2 belongs to Infineon's OPTIREG™ linear family, engineered specifically for automotive power supply resilience - emphasizing ultra-low IQ, extended temperature operation, and integrated fault protection for battery-connected ECUs.
FAQ
What is the minimum input voltage required for regulation?
The TLE42664GHTMA2 requires a minimum input voltage of 5.5 V to maintain 5 V output regulation across its full operating temperature range. At 100 mA load, the dropout voltage is 250–500 mV, meaning VI must exceed 5.25–5.5 V. Below 5.5 V, regulation degrades and output follows input minus dropout.
Can the EN pin be left floating?
No - the EN pin must not be left floating. It features an internal 1 MΩ pull-down resistor to GND, but uncontrolled noise or leakage could cause unintended enable/disable cycling. For reliable operation, tie EN directly to VI (for always-on) or drive it actively with a microcontroller GPIO.
Is external compensation required for stability?
No external compensation is needed. The device is internally compensated and stable with a 10 µF ceramic output capacitor having ESR ≤2 Ω at 10 kHz. Using lower-ESR capacitors (e.g., polymer or MLCC) without series resistance may cause oscillation; follow datasheet-recommended CQ/ESR values strictly.
How does thermal performance change with PCB layout?
Thermal resistance varies significantly with PCB design: RthJA is 64 K/W with 600 mm² heatsink area on 1-layer board, but rises to 139 K/W with footprint-only copper. The exposed heat slug (Pin 4) must be soldered to ≥300 mm² GND copper pour with ≥4 thermal vias to inner layers to achieve rated 150°C operation at 100 mA.
TLE42664GHTMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 0.5V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 4 mA
- PSRR:
- 68dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT223-4
TLE42664GHTMA2 FAQ
1.How can I place an order for TLE42664GHTMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42664GHTMA2 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 TLE42664GHTMA2 reliable?
The price and inventory of TLE42664GHTMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42664GHTMA2 is usually 5 days.
3.What payment methods are accepted for TLE42664GHTMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42664GHTMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42664GHTMA2?
TLE42664GHTMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42664GHTMA2 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 TLE42664GHTMA2?
For technical support, including TLE42664GHTMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42664GHTMA2 requirements.
6.How does Aetrix verify that TLE42664GHTMA2 is sourced from the original manufacturer or authorized distributors?
All TLE42664GHTMA2 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 TLE42664GHTMA2 meets industry standards.
7.What is the process for return or replacement of TLE42664GHTMA2?
All TLE42664GHTMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42664GHTMA2, 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 TLE42664GHTMA2 part is unused and in its original packaging.
Return procedure for TLE42664GHTMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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