TLE42694EXUMA1 - 5V 150mA Auto LDO w/ Reset | Infineon
MPN: TLE42694EXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.38 | $138.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.02 | $1,020.00 |
| 2,500 | $0.89 | $2,225.00 |
TLE42694EXUMA1 Overview
What is an LDO (Low-Dropout) regulator? An LDO is a type of linear voltage regulator that maintains a regulated output voltage even when the input-to-output voltage differential (dropout) is small, typically a few hundred millivolts. LDOs are a sub-category of linear regulators, themselves part of the broader voltage regulator family within power management ICs. Compared with switching regulators, LDOs do not switch, do not generate EMI, and have a smaller footprint, but dissipate the difference (VIN - VOUT) x IOUT as heat. The TLE42694E belongs to the OPTIREGβ’ Linear family of Infineon automotive regulators.
Key specifications include a maximum input voltage of 45 V, a fixed 5.0 V output, a maximum dropout of 0.5 V at 100 mA, and very low quiescent current in normal operation. The reset circuit provides an active-low power-good signal with adjustable delay, eliminating the need for an external reset supervisor. The exposed pad on the SSOP-14 package improves thermal dissipation, allowing sustained 150 mA output across the automotive temperature range without an external heatsink.
Architecturally the part uses a PNP pass transistor topology with on-chip bandgap reference and current-limit foldback. The internal reset comparator monitors the regulated output with a well-defined threshold hysteresis and is immune to brief transients from the load. Internal thermal protection trips at approximately 175Β°C junction temperature with hysteresis to recover automatically. The reset delay is programmed by a single external capacitor on the DLY pin.
Typical applications include automotive body and chassis ECUs, instrument clusters, HVAC control modules, sensor power supplies, and other 12 V board-net loads that require a stable 5 V rail with a power-good reset for an attached microcontroller. Wide VIN tolerance allows direct connection to a 12 V or 24 V automotive bus without pre-regulation.
When designing with this LDO, always place input/output ceramic capacitors close to the pins and respect the absolute maximum VIN of 45 V including load-dump transients. The exposed pad must be soldered to a sufficient copper pour to keep junction temperature within the AEC-Q100 derating window.
This page synthesizes Infineon distributor pricing, automotive-grade drop-in equivalents, and practical reset-design notes that are not collected in a single place on the manufacturer datasheet.
Drop-in alternatives for TLE42694EXUMA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLE42694EXUMA1 (same form factor and footprint) β differing in Package, Reset Output.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE42694G
β Drop-Inπ Reference alternative (not in catalog)
TLE42694E
β Drop-Inπ Reference alternative (not in catalog)
TLE42794
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLE42694GXUMA2
β Drop-Inπ Reference alternative (not in catalog)
TLE42694GMXUMA2
β Drop-Inβ In Stock
$1.1 / Unit
View Datasheet βTLE42694EXUMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Series | OPTIREGβ’ Linear, Automotive, AEC-Q100 |
| Output Configuration | Positive, Fixed |
| Output Type | Fixed 5.0 V |
| Number of Regulators | 1 |
| Input Voltage (Max) | 45 V |
| Output Voltage (Fixed) | 5.0 V |
| Dropout Voltage (Max) | 0.5 V at 100 mA |
| Output Current (Max) | 150 mA |
| Reset Output | Active-low, programmable delay (DLY pin) |
| Current Limit | Short-circuit proof, internally limited |
| Thermal Shutdown | Integrated overtemperature protection |
| Operating Temperature (AEC-Q100) | -40 C to +150 C Tj (AEC-Q100 grade) |
| Package | PG-SSOP-14-2 (14-LSSOP with exposed pad, 3.90 mm width) |
| Mounting Type | Surface Mount |
| MSL Level | MSL per JEDEC J-STD-020 (manufacturer-rated) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
TLE42694EXUMA1 Pin Configuration
| Pin 1 | IN β Input voltage (up to 45 V) |
| Pin 2 | IN β Input voltage (parallel pin for lower Rdson) |
| Pin 3 | GND β Ground reference |
| Pin 4 | DLY β Reset delay programming capacitor |
| Pin 5 | RESET β Active-low reset output to MCU |
| Pin 6 | RADJ β Reset threshold adjustment (per datasheet variant) |
| Pin 7 | OUT β Regulated 5.0 V output |
| Pin 8 | OUT β Regulated 5.0 V output (parallel pin) |
| Pin 9 | NC β Not connected (per datasheet) |
| Pin 10 | NC β Not connected (per datasheet) |
| Pin 11 | NC β Not connected (per datasheet) |
| Pin 12 | NC β Not connected (per datasheet) |
| Pin 13 | NC β Not connected (per datasheet) |
| Pin 14 | TAB β Exposed thermal pad - must be soldered to GND copper pour |
Typical Applications
TLE42694EXUMA1 is suitable for 6 applications: Automotive Body Control Module (BCM), Instrument Cluster MCU Supply, HVAC Control Module Power, Automotive Sensor Power Supply, RKE / Immobilizer Receiver Module, LED Driver Logic Supply (Exterior Lighting).
Automotive Body Control Module (BCM)
The TLE42694EXUMA1 supplies a 5 V rail to the BCM microcontroller from the 12 V board net. Its 45 V max VIN tolerates load-dump and jump-start transients, and its integrated active-low reset with programmable delay eliminates a separate supervisor IC. The 150 mA output covers BCM logic, CAN transceiver, and relay-driver pre-driver loads. AEC-Q100 qualification makes it drop-in usable in body electronics designs where the regulator sits next to high-side switches. Compared with a discrete 5 V LDO plus reset IC, the TLE42694EXUMA1 saves PCB area, BOM cost, and qualification effort - critical when the BCM drives dozens of vehicle variants on one platform.
Recommended
Instrument Cluster MCU Supply
Instrument clusters require a clean 5 V rail for the MCU plus a deterministic power-on reset to start the display initialization sequence. The TLE42694EXUMA1 provides both in one IC, with the DLY capacitor tunable so the MCU reset matches its required power-on delay. Its exposed-pad SSOP-14 footprint fits behind the cluster gauge stepper-motor drivers, and the integrated thermal shutdown protects against back-current faults from failed display drivers. AEC-Q100 grade 1 ensures operation across -40 C to +125 C ambient cluster environments. The 5 V / 150 mA output comfortably powers a small Cortex-M class MCU, the backlight logic, and the stepper motor predrivers in a typical cluster design.
Recommended
HVAC Control Module Power
HVAC modules operate from the 12 V board net and need a robust 5 V rail for the control MCU, NTC temperature sensing, and BLDC fan-driver logic. The TLE42694EXUMA1 with its 45 V max VIN handles cranking dips and load-dump events, while the integrated reset supervises the MCU through thermal stress cycles common in dash-mounted HVAC units. The exposed pad SSOP-14 footprint is thermally robust enough to sit next to the BLDC driver without derating. The 150 mA current budget covers the MCU plus sensor conditioning and a small LCD segment driver. Compared with discrete LDOs, the TLE42694EXUMA1 reduces PCB area in space-constrained HVAC head units.
Recommended
Automotive Sensor Power Supply
Many automotive sensors (parking, occupancy, rain-light) require a regulated 5 V supply rail with a power-good reset when the rail comes up. The TLE42694EXUMA1 is well suited to this role, providing 150 mA to the sensor MCU and analog front-end with an integrated supervisor. Its 45 V input tolerance means it can be powered directly from a protected 12 V sensor feed without pre-regulation, simplifying the sensor harness. AEC-Q100 grade 1 and the exposed-pad PG-SSOP-14-2 package allow operation across the full automotive temperature range. Using this LDO removes the need for a separate reset IC in cost-sensitive sensor modules.
Recommended
RKE / Immobilizer Receiver Module
Remote keyless entry receivers and immobilizer ECUs need a low-quiescent 5 V supply that wakes the MCU on CAN or LIN activity. The TLE42694EXUMA1 with its low quiescent current and integrated reset keeps standby power low while providing deterministic power-on for cryptographic operations. Its compact SSOP-14 exposed-pad package fits inside small RKE ECU housings where PCB area is at a premium. The 45 V input tolerance handles the transients present on automotive battery feeds during cranking, making the part ideal for body-mounted RKE receivers. AEC-Q100 grade 1 ensures long-term reliability over the vehicle life.
Recommended
LED Driver Logic Supply (Exterior Lighting)
Daytime running light and rear-lamp LED driver modules need a clean 5 V rail for the MCU and diagnostic logic, with a reset to ensure the lamp fault state machine starts deterministically. The TLE42694EXUMA1 powers this logic from the 12 V board net with full 45 V transient tolerance, and its exposed pad keeps the die cool when the LED driver dissipates heat into the same PCB. The integrated reset signal eliminates a separate voltage supervisor in cost-sensitive lamp modules. AEC-Q100 grade 1 supports headlamp and rear-lamp operating environments. The 150 mA output covers an LED driver MCU plus diagnostic CAN/LIN circuitry.
Recommended
Recommended Products Summary
Engineering reference data for TLE42694EXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE42694G | TLE42694E | TLE42694GXUMA2 | TLE42694GMXUMA2 | TLE42794 |
|---|---|---|---|---|---|---|
| Package | PG-SSOP-14-2 (14-LSSOP with exposed pad) | PG-DSO-14 - same die, no exposed pad | PG-DSO-20 - same die, different footprint | PG-DSO-14 - same as TLE42694G, T&R variant | PG-DSO-14 - automotive equivalent | PG-SSOP-14-2 - same exposed pad footprint |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Output Voltage | 5.0 V fixed | 5.0 V fixed | 5.0 V fixed | 5.0 V fixed | 5.0 V fixed | 5.0 V fixed |
| Output Current (Max) | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA | 500 mA (+233%) |
| Input Voltage (Max) | 45 V | 45 V | 45 V | 45 V | 45 V | 45 V |
| Dropout Voltage (Max) | 0.5 V at 100 mA | 0.5 V at 100 mA | 0.5 V at 100 mA | 0.5 V at 100 mA | 0.5 V at 100 mA | 0.5 V at 250 mA |
| Reset Output | Yes (active-low, programmable DLY) | Yes (active-low, programmable DLY) | Yes (active-low, programmable DLY) | Yes (active-low, programmable DLY) | Yes (active-low, programmable DLY) | Yes (active-low, programmable DLY) |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Integrated reset generator with programmable delay (vs TLE42994 (no reset))
- Exposed-pad SSOP-14 for compact thermal performance (vs TLE42694G (DSO-14 no exposed pad))
- 45 V max VIN for direct 12 V/24 V board-net connection (vs Generic 5V LDO with 18 V max VIN)
Design Notes
Estimated: at VIN=13.5 V (typical 12 V board net), VOUT=5.0 V, IOUT=150 mA, the TLE42694EXUMA1 dissipates roughly (13.5 - 5.0) * 0.150 = 1.275 W. The exposed pad of the PG-SSOP-14-2 package must be soldered to a GND copper pour of at least 200 mm^2 to keep junction temperature below 150 C at 85 C ambient. Without the exposed pad soldered, theta_JA rises sharply and the device will trip thermal shutdown under sustained 150 mA load.
Place input and output ceramic capacitors (1 uF X7R minimum, 4.7 uF X7R recommended) within 3 mm of the IN and OUT pins. The DLY reset capacitor (typically 1-100 nF) must be placed close to pin 4 with a low-leakage X7R or film type to ensure predictable reset timing. The exposed pad must be tied to GND with multiple thermal vias to the inner GND plane for effective heat spreading.
Do not exceed the absolute maximum input voltage of 45 V including transient events. Place a TVS such as a 36 V SMBJ36A on VIN to clamp load-dump surges that can exceed 45 V on the 12 V board net. The reset output is active-low: do not connect it directly to a high-voltage rail. The DLY capacitor value directly sets the reset pulse width per the datasheet formula - do not substitute an electrolytic type for the DLY cap, as leakage current will corrupt the timing.
Keep the GND return path from the exposed pad direct to the input capacitor ground and the output capacitor ground on the same copper pour to minimize ground bounce. Avoid routing noisy switching nodes (relay coils, LED drivers) under the SSOP-14 footprint where they could couple into the 5 V analog rail. If the design uses the device near a CAN or LIN bus, maintain 50 mm of clearance between the LDO input trace and the bus traces to meet automotive EMC margins.
Compliance Information
AEC-Q100 qualified per Infineon OPTIREG Linear family page. RoHS and REACH compliant per Infineon product environmental compliance disclosures. Halogen-free status not explicitly stated in web data; mark unknown.
