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Infineon Technologies TLE42994GMV33XUMA1
- Part No.:
- TLE42994GMV33XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE42994GMV33XUMA1.pdf
- Description:
- IC REG LINEAR 3.3V 150MA DSO14
- Quantity:
- Payment:
- Shipping:
Inventory:4,100
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Product details
Overview
TLE42994GMV33XUMA1 from Infineon is a monolithic 3.3 V ±2% low-dropout linear voltage regulator with integrated reset, enable, and sense comparator functions, rated for 150 mA output current, 4.4–45 V input range, and automotive-grade operation from −40 °C to +150 °C. It delivers stable power to microcontrollers and sensors in engine-off battery-retention systems.
For engineers reviewing the TLE42994GMV33XUMA1 datasheet, TLE42994GMV33XUMA1 pinout, TLE42994GMV33XUMA1 application, or TLE42994GMV33XUMA1 equivalent, key selection criteria include programmable reset threshold (via RADJ), reset delay timing (via external capacitor on D), early-warning sense capability (SI/SO), ultra-low OFF-state current (<1 µA), and reverse-polarity protection.
Technical Context
The device integrates a bandgap reference, saturation-controlled series pass transistor, and dual comparators-one for power-on/undervoltage reset (RO) and one for configurable early warning (SO). Reset threshold is adjustable from internal 3.10 V down to 1 V via external resistor divider on RADJ.
Reset delay is set by an external ceramic capacitor on pin D; the sense comparator monitors any external voltage (e.g., battery or rail) applied to SI and asserts SO low on undervoltage. EN enables/disables regulation with <1 µA quiescent current in OFF state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 3.3 V ±2% - tightly regulated supply for 3.3 V logic and MCU cores requiring stable bias under wide input and load variation. |
| Max output current | 150 mA - sufficient to power automotive body control modules, CAN transceivers, or sensor signal chains without external boost. |
| Input voltage range | 4.4 V to 45 V - supports cold-crank (4.4 V) and load-dump (45 V) conditions per ISO 7637-2 without external clamping. |
| Dropout voltage | Typ. 250 mV @ 150 mA - enables regulation down to 3.55 V input, critical for battery-retention operation during deep discharge. |
| Quiescent current (OFF) | <1 µA - preserves vehicle battery during extended parking; enabled only when EN = low. |
| Reset threshold | Adjustable from 1 V to 3.10 V - allows system-level brown-out detection before MCU fails, configurable via RADJ voltage divider. |
| Operating temperature | −40 °C to +150 °C - qualified per AEC-Q100 Grade 0, suitable for under-hood placement near engine control units. |
Pinout & Package
Package: PG-DSO-14 (14-pin exposed-pad SOIC variant, RoHS-compliant, thermal pad connected to GND for enhanced heat dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RADJ | Reset threshold adjust | Connect external resistor divider to set custom reset point; tie to GND for factory default 3.10 V. |
| 2 D | Reset delay timing | Attach ceramic capacitor to GND to program reset assertion delay; open if reset not required. |
| 3,4,5 GND | Ground return | All three pins must be connected to PCB ground plane and heatsink area for thermal and noise integrity. |
| 6 EN | Enable control | High = regulator active; low = shutdown with <1 µA current; tie to I if always-on operation needed. |
| 7 RO | Reset output | Open-collector output pulled up internally to Q via 20 kΩ; asserts low on undervoltage or power-on reset. |
| 8 SO | Sense output | Open-collector early-warning output; goes low when SI voltage falls below programmed threshold. |
| 9 Q | Regulated output | 3.3 V supply output; requires local ceramic capacitor (CQ) with specified ESR for loop stability. |
| 10,11,12 GND | Ground return | Additional GND pins improve thermal conduction and reduce ground impedance in high-noise environments. |
| 13 I | Input compensation | Optional input decoupling node; connect capacitor to GND near IC to suppress line transients. |
| 14 SI | Sense input | Monitor any external voltage (e.g., battery, 5 V rail); connect to Q if sense function unused. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable reset threshold | Adjustable from 1 V to 3.10 V using external resistors on RADJ - enables precise brown-out detection aligned with host MCU requirements. |
| Configurable reset delay | Set via external capacitor on D pin - avoids false resets during transient startup or ignition bounce. |
| Early-warning sense comparator | Dedicated SI/SO path monitors auxiliary rails independently of main output - provides pre-failure alert before system reset occurs. |
| Ultra-low shutdown current | <1 µA at EN = low - extends vehicle battery life during long-term parking without compromising wake-up readiness. |
| Integrated protections | Reverse polarity, overtemperature, and current-limiting - eliminates need for discrete protection components in space-constrained automotive modules. |
Applications
| Engine Control Unit Power | Body Control Module Supply |
|---|---|
|
Use Scenario: Powers MCU, CAN interface, and analog sensors in ECU during engine-off battery-retention mode. IC Role / Device Role / Timing Role: Primary 3.3 V LDO with reset signaling and battery voltage monitoring. Use Value: Maintains 3.3 V output down to 4.4 V input and asserts RO at 3.10 V (or lower) to trigger controlled MCU shutdown before brown-out. |
Use Scenario: Supplies door module microcontroller and LIN transceiver in low-power sleep state. IC Role / Device Role / Timing Role: Always-on regulator with EN-controlled wake-up and SI-monitored battery health. Use Value: Enables <1 µA shutdown current and SO-based early warning on 12 V battery sag, preventing unexpected module resets. |
| ADAS Camera Module Bias | Electric Power Steering Sensor Rail |
|
Use Scenario: Provides clean 3.3 V bias to image sensor and ISP in rear-view camera systems. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO with programmable reset to synchronize camera boot with vehicle power-up sequence. Use Value: Delivers stable 3.3 V under load-dump conditions (up to 45 V) and uses D-capacitor to delay reset until power settles. |
Use Scenario: Supplies torque and position sensors in EPS systems exposed to high ambient temperature. IC Role / Device Role / Timing Role: High-temp-rated LDO with integrated overtemperature shutdown and reverse-polarity protection. Use Value: Operates reliably at 150 °C junction temperature and protects against accidental battery reversal during service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 3.3 V, 300 mA, 220 mV dropout, no reset/sense features, SOT-23-5 package | Lacks programmable reset, early warning, and EN-controlled ultra-low-IQ; suited for non-safety-critical consumer-grade modules | Select only if reset functionality is handled externally and thermal/power density permits smaller package. |
| MAX1725EUT33+T | 3.3 V, 200 mA, 170 mV dropout, fixed reset threshold (2.93 V), SOT-23-5 | Fixed reset point, no RADJ/SI/SO flexibility; lacks automotive qualification and high-temp rating | Acceptable for cost-sensitive industrial designs where AEC-Q100 compliance and 150 °C operation are not required. |
Compared with TLV73333PDBVR and MAX1725EUT33+T, the TLE42994GMV33XUMA1 uniquely combines AEC-Q100 Grade 0 qualification, 150 °C operation, programmable reset/sense, and sub-µA shutdown - making it irreplaceable for safety-critical, engine-compartment automotive LDO applications.
Availability
TLE42994GMV33XUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering sensor rails requiring stable component supply across automotive production lifecycles.
Supply support for TLE42994GMV33XUMA1 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, and industrial control ICs, with global manufacturing and AEC-Q100 validation infrastructure.
The OPTIREG™ Linear product line delivers robust, automotive-qualified linear regulators designed specifically for harsh-environment power supply in engine control, chassis, and driver-assistance systems.
FAQ
What is the minimum input voltage required for regulation at full 150 mA load?
The TLE42994GMV33XUMA1 maintains regulation down to 4.4 V input at 150 mA load, corresponding to a typical dropout voltage of 250 mV. Below 4.4 V, output collapses; this threshold satisfies ISO 16750-2 cold-crank requirements for automotive systems.
How is the reset delay time calculated from the external capacitor on pin D?
Reset delay tdelay ≈ 1.1 × RINT × CD, where RINT is an internal ~1.2 MΩ timing resistor. For example, a 100 nF capacitor yields ~132 ms delay. Use X7R ceramic capacitors rated for ≥16 V and place within 5 mm of pin D and GND.
Can the sense comparator (SI/SO) monitor voltages other than the input rail?
Yes - SI accepts any DC voltage between 1 V and 45 V. It can monitor battery voltage, 5 V auxiliary rails, or even isolated sensor supplies. The comparator threshold is set by the same RADJ divider used for reset, enabling coordinated brown-out detection across multiple rails.
Is the exposed thermal pad on the PG-DSO-14 package required to be connected to GND?
Yes - the exposed pad must be soldered to a PCB copper pour tied to GND. This connection provides both electrical grounding and thermal conduction; omitting it degrades thermal resistance by >30 °C/W and risks overtemperature shutdown under sustained 150 mA load.
TLE42994GMV33XUMA1 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:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 2 mA
- PSRR:
- 66dB (100Hz)
- Control Features:
- Enable, Reset
- 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-DSO-14
TLE42994GMV33XUMA1 FAQ
1.How can I place an order for TLE42994GMV33XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42994GMV33XUMA1 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 TLE42994GMV33XUMA1 reliable?
The price and inventory of TLE42994GMV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42994GMV33XUMA1 is usually 5 days.
3.What payment methods are accepted for TLE42994GMV33XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42994GMV33XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42994GMV33XUMA1?
TLE42994GMV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42994GMV33XUMA1 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 TLE42994GMV33XUMA1?
For technical support, including TLE42994GMV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42994GMV33XUMA1 requirements.
6.How does Aetrix verify that TLE42994GMV33XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE42994GMV33XUMA1 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 TLE42994GMV33XUMA1 meets industry standards.
7.What is the process for return or replacement of TLE42994GMV33XUMA1?
All TLE42994GMV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42994GMV33XUMA1, 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 TLE42994GMV33XUMA1 part is unused and in its original packaging.
Return procedure for TLE42994GMV33XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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