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Infineon Technologies TLE4470GXUMA2
- Part No.:
- TLE4470GXUMA2
- Manufacturer:
- Infineon Technologies
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE4470GXUMA2.pdf
- Description:
- IC REG LINEAR POS ADJ 14DSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,734
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Product details
Overview
TLE4470GXUMA2 from Infineon Technologies is a dual low-dropout voltage regulator IC for automotive microprocessor power supply, featuring a 5 V ±2% standby output (180 mA), a tracked main output (350 mA), wide 5.6–45 V input range, -40 °C to 150 °C operation, and integrated Power-On-Reset with adjustable delay. It delivers stable dual-rail power in engine control units and body electronics under harsh conditions.
For engineers reviewing the TLE4470GXUMA2 datasheet, TLE4470GXUMA2 pinout, TLE4470GXUMA2 application, or TLE4470GXUMA2 equivalent, key selection factors include its PG-DSO-20 package, adjustable reset threshold (RADJ), disable-controlled main output, early-warning undervoltage sensing (SI), and AEC-Q100 qualification for automotive use.
Technical Context
The TLE4470GXUMA2 integrates two independent LDO regulators: a fixed 5 V standby rail (Q1) and a main rail (Q2) tracked to Q1's accuracy, enabling synchronous voltage stability critical for MCU core/peripheral sequencing. Its internal PNP pass transistors enable very low dropout-typically <0.5 V at full load-and support operation down to 5.6 V input while maintaining regulation.
It embeds system-level supervision functions: an open-collector reset output (RQ) with programmable delay via external capacitor on pin D, an adjustable reset switching threshold via RADJ (PG-DSO-20 only), and an early-warning comparator (SI/SQ) that monitors input supply pre-failure. All protection circuits-including short-circuit, overload, and overtemperature-are fully autonomous and do not require external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standby Output | 5 V ±2%; supplies MCU standby logic and real-time clock with tight tolerance across temperature and load |
| Main Output Current | 350 mA max; supports microcontroller core voltage with tracking to standby rail for synchronized startup |
| Input Voltage Range | 5.6 V to 45 V; accommodates automotive battery transients including load dump up to 45 V |
| Quiescent Current (Standby) | 180 µA typical; enables ultra-low-power sleep mode in body control modules |
| Operating Temperature | -40 °C to +150 °C junction; qualified for under-hood ECU placement without derating |
| Reset Delay Adjustment | Capacitor-programmable on pin D; sets POR hold time to meet MCU minimum reset assertion requirements |
| Reset Threshold Adjust | Via RADJ pin; allows custom reset point down to ~3.5 V for low-voltage tolerant MCUs |
| Short-Circuit Protection | Auto-recovering foldback current limit; maintains safe thermal operation during sustained output fault |
Pinout & Package
Package: PG-DSO-20 (20-pin exposed-pad SOIC), RoHS-compliant, AEC-Q100 qualified, thermal resistance Rthj-a = 100 K/W (mounted on 80×80 mm PCB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RADJ | Reset threshold adjust input | Connects to voltage divider from Q1 to GND to set custom reset point; grounded for default 4.65 V threshold |
| 2 D | Reset delay capacitor terminal | External capacitor here sets POR delay time; determines minimum reset pulse width for MCU initialization |
| 3 DIS | Main regulator disable control | High-level signal disables Q2 output, reducing total quiescent current to 180 µA |
| 4–7, 14–17 GND | Power and signal ground | Multiple dedicated ground pins minimize ground bounce and improve PSRR in noisy automotive environments |
| 8 RQ | Open-collector reset output | Pulled low when VQ1 falls below threshold or during power-on; internal 30 kΩ pull-up to Q1 |
| 9 SQ | Open-collector sense output | Signals early undervoltage warning; driven low when VI drops below preset level via SI comparator |
| 10 Q1 | Standby regulator output | 5 V ±2% source for low-power subsystems; requires ≥6 µF/ESR <10 Ω ceramic output capacitor |
| 11 ADJ2 | Main output voltage adjust input | Feedback node for external resistor divider; enables Q2 voltage setting ≥5 V with tracking to Q1 |
| 12–13 Q2 | Main regulator output | 350 mA tracked output; requires ≥10 µF/ESR <10 Ω ceramic capacitor for stability |
| 18 I2 | Main regulator input | Direct connection point for main rail input; must be decoupled with ceramic cap at IC pin |
| 19 I1 | Standby regulator input | Direct connection point for standby rail input; decoupled locally with ceramic capacitor |
| 20 SI | Sense comparator input | Monitors raw input voltage VI; triggers SQ output before Q1 collapse, enabling predictive shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Dual tracked LDO architecture | Q2 output voltage tracks Q1 within ±2% tolerance, ensuring synchronized MCU core/peripheral power-up |
| Adjustable reset threshold (RADJ) | Enables system-specific reset point tuning-critical for MCUs operating safely below 4.65 V |
| Disable-controlled main output | DIS pin reduces total device current to 180 µA, supporting battery-conscious body electronics sleep modes |
| Integrated early-warning comparator | SI/SQ circuit provides preemptive undervoltage alert before Q1 fails, allowing graceful system shutdown |
| AEC-Q100 Grade 0 qualification | Validated for 150 °C junction operation, meeting stringent reliability requirements for powertrain applications |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Supplies 5 V standby and 5 V main rails to 32-bit MCU, CAN transceivers, and sensor interfaces in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Dual-rail LDO regulator with POR and undervoltage monitoring; ensures deterministic MCU boot and fail-safe shutdown during cranking. Use Value: Tracks Q1/Q2 within ±2%, eliminating sequencing ICs; withstands 45 V load dump without external TVS. | Use Scenario: Powers door module MCU, LIN transceivers, and LED drivers in 12 V vehicle architectures with stop-start capability. IC Role / Device Role / Timing Role: Standby regulator sustains RTC and wake-up logic; DIS pin enables deep-sleep mode with 180 µA total current. Use Value: RADJ-adjustable reset prevents spurious resets during battery voltage sag; SI comparator triggers pre-failure alerts. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance System (ADAS) Camera ECU |
Use Scenario: Delivers regulated 5 V to transmission MCU, solenoid drivers, and position sensors in automatic gearbox control systems. IC Role / Device Role / Timing Role: Main output powers high-current solenoid interface; Q1 supplies isolated CAN FD communication layer. Use Value: Overtemperature protection shuts down outputs before junction exceeds 150 °C; RQ output holds MCU in reset during thermal fault. | Use Scenario: Provides clean 5 V power to image sensor, ISP, and Ethernet PHY in rear-view camera modules mounted near exhaust. IC Role / Device Role / Timing Role: Dual LDO eliminates need for discrete regulators; SQ output signals voltage drop before brownout affects image capture. Use Value: PG-DSO-20 package with exposed pad achieves 100 K/W Rthj-a, sustaining operation at 125 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70733PDRVR | Single 3.3 V output, 300 mA, no reset or sense functions, SOT-563 package | Lacks dual-rail, tracking, reset, or automotive qualification; suitable only for non-safety consumer-grade 3.3 V logic | Select only for cost-sensitive, non-automotive 3.3 V applications without supervision features |
| MAX16922ATP+T | Dual output (5 V/3.3 V), 250 mA/150 mA, integrated watchdog, 40 V max input, TQFN-20 | Includes watchdog timer but lacks adjustable reset threshold and early-warning comparator; lower current capability | Prefer when watchdog functionality is required and 350 mA main output is not needed |
Compared with TLV70733PDRVR and MAX16922ATP+T, the TLE4470GXUMA2 uniquely combines 350 mA tracked dual-LDO operation, RADJ-adjustable reset, SI-based predictive undervoltage detection, and AEC-Q100 Grade 0 rating-making it irreplaceable for high-reliability engine and transmission ECUs.
Availability
TLE4470GXUMA2 is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS camera ECUs requiring stable component supply across automotive production lifecycles.
Supply support for TLE4470GXUMA2 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 automotive qualification infrastructure.
The TLE4470 belongs to Infineon's TLE automotive power system IC family, designed specifically to replace discrete LDO + supervisor combinations in engine, transmission, and chassis control units under extreme thermal and electrical stress.
FAQ
What is the function of the RADJ pin on the TLE4470GXUMA2?
The RADJ pin sets the reset switching threshold voltage via an external resistor divider between Q1 and GND. When left unconnected or grounded, the device uses its internal 4.65 V threshold. Connecting RADJ to a voltage between 0.5 V and 5 V adjusts the reset point downward-enabling compatibility with MCUs that operate reliably below the default threshold.
Can the main output (Q2) be set to a voltage higher than 5 V?
Yes-the TLE4470GXUMA2 (PG-DSO-20 package) supports adjustable main output voltage ≥5 V using an external resistor divider from Q2 to GND connected to the ADJ2 pin. The output tracks Q1's 5 V reference with ±2% accuracy, so a 7 V Q2 setting remains within ±0.14 V of its nominal value across temperature and load.
How does the early-warning comparator (SI/SQ) improve system reliability?
The SI pin monitors raw input voltage VI independently of regulated outputs. When VI drops below a preset level, the open-collector SQ output pulls low-providing advance warning before Q1 collapses. This enables firmware to save critical data or enter safe state 10–100 ms before brownout, significantly improving functional safety in ASIL-B systems.
Is the TLE4470GXUMA2 pin-compatible with the PG-DSO-14 version (TLE4470GS)?
No-TLE4470GXUMA2 uses the PG-DSO-20 package with 20 pins including RADJ and separate I1/I2 inputs, whereas TLE4470GS uses PG-DSO-14 with 14 pins, shared input (I), fixed 5 V Q2, and no RADJ. Pin count, function allocation, and PCB footprint differ; migration requires board redesign and firmware adjustment for reset threshold handling.
TLE4470GXUMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V, (5V), Tracking
- Voltage - Output (Max):
- 20V
- Voltage Dropout (Max):
- 0.5V @ 100mA, 0.6V @ 200mA
- Current - Output:
- 100mA, 250mA
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- 15 mA
- PSRR:
- 60dB (20Hz ~ 20kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-14
TLE4470GXUMA2 FAQ
1.How can I place an order for TLE4470GXUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4470GXUMA2 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 TLE4470GXUMA2 reliable?
The price and inventory of TLE4470GXUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4470GXUMA2 is usually 5 days.
3.What payment methods are accepted for TLE4470GXUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4470GXUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4470GXUMA2?
TLE4470GXUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4470GXUMA2 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 TLE4470GXUMA2?
For technical support, including TLE4470GXUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4470GXUMA2 requirements.
6.How does Aetrix verify that TLE4470GXUMA2 is sourced from the original manufacturer or authorized distributors?
All TLE4470GXUMA2 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 TLE4470GXUMA2 meets industry standards.
7.What is the process for return or replacement of TLE4470GXUMA2?
All TLE4470GXUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4470GXUMA2, 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 TLE4470GXUMA2 part is unused and in its original packaging.
Return procedure for TLE4470GXUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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