TLE42694GMXUMA1 - 5V/150mA Automotive LDO | Infineon
MPN: TLE42694GMXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.96 | $19.60 |
| 100 | $1.62 | $162.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.08 | $1,080.00 |
| 2,500 | $0.94 | $2,350.00 |
TLE42694GMXUMA1 Overview
An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage. Within the broader power-management IC hierarchy, LDOs sit beneath DC-DC converters and switching regulators, offering lower noise, faster transient response, and a smaller PCB footprint at the cost of lower efficiency. The TLE42694 family specifically targets automotive point-of-load regulation, supplying microcontroller, sensor, and CAN transceiver rails directly from the vehicle battery net.
Key features of the TLE42694GMXUMA1 include a very low quiescent current in normal operation, an enable/reset function with adjustable reset delay for power-good supervision, integrated protection such as current limit and overtemperature shutdown, and a wide operating temperature range qualified for automotive use. The PG-DSO-14 package provides adequate thermal headroom for the 150 mA continuous load rating, and the device is qualified to the Infineon automotive-grade reliability flow.
Architecturally, the TLE42694 uses a monolithic bipolar process with an internal bandgap reference and a PNP/DMOS-style pass element that achieves the low-dropout behavior required for cold-crank survival (battery voltages momentarily dipping below 6 V while still needing a 5 V rail). The reset circuit monitors the output voltage and pulls the reset pin low whenever VOUT falls below the programmed threshold, providing a deterministic power-on signal for downstream microcontrollers.
Typical applications include automotive body and powertrain ECUs, sensor interfaces, instrument-cluster supplies, and infotainment subsystems where a quiet, post-protected 5 V rail is required. It is also used as an auxiliary post-regulator after a switching pre-regulator to suppress switching ripple on noise-sensitive analog sections. The wide input range makes it equally suited to 12 V passenger vehicles and 24 V commercial vehicles.
When designing with this device, observe the minimum input-to-output headroom required to maintain regulation during cold-crank, and follow the datasheet recommendation for input/output capacitance to ensure stability. The reset pin can be left open if unused, but a pull-up resistor is typically required.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in cross-reference alternatives in the same PG-DSO-14 footprint, and practical design notes not aggregated on any single manufacturer page.
Drop-in alternatives for TLE42694GMXUMA1 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 TLE42694GMXUMA1 (same form factor and footprint) β differing in Input Voltage Range, Maximum Output Current, Package, Topology.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE42694GM
β Drop-Inπ Reference alternative (not in catalog)
TLE4269GM
β Drop-Inπ Reference alternative (not in catalog)
TPS7B4250QDCQRQ1
β Drop-Inπ Reference alternative (not in catalog)
TLE42744DV33ATMA1
β Drop-Inβ In Stock
$0.74 / Unit
View Datasheet βTLV70450QDCQRQ1
β Drop-Inπ Reference alternative (not in catalog)
TLE42694GMXUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Linear Voltage Regulator (LDO) |
| Topology | Positive Fixed Single Output |
| Output Voltage | 5.0 V |
| Output Voltage Accuracy | Β±2 % |
| Maximum Output Current | 150 mA |
| Input Voltage Range | Up to 45 V |
| Number of Outputs | 1 |
| Reset / Power-Good | Yes (with adjustable delay) |
| Enable Function | Yes (on/off control) |
| Current Limit | Integrated |
| Overtemperature Protection | Integrated (thermal shutdown) |
| Operating Temperature Range | -40 Β°C to +150 Β°C (automotive grade) |
| Package | PG-DSO-14 (14-pin DSO) |
| Mounting Type | Surface Mount |
| Automotive Qualification | Yes (AEC-Q100 qualified) |
TLE42694GMXUMA1 Pin Configuration
| Pin 1 | IN β Input voltage supply (up to 45 V) |
| Pin 2 | IN β Input voltage supply (bonds to pin 1) |
| Pin 3 | GND β Ground reference |
| Pin 4 | EN β Enable input (active high) |
| Pin 5 | NC β Not connected (per datasheet) |
| Pin 6 | NC β Not connected (per datasheet) |
| Pin 7 | RESET β Reset output (open-drain, asserted low when VOUT below threshold) |
| Pin 8 | DELAY β Reset delay programming pin (external capacitor sets delay) |
| Pin 9 | OUT β Regulated 5 V output |
| Pin 10 | OUT β Regulated 5 V output (bonds to pin 9) |
| Pin 11 | ADJ β Adjust / sense input |
| Pin 12 | NC β Not connected (per datasheet) |
| Pin 13 | NC β Not connected (per datasheet) |
| Pin 14 | TAB β Exposed thermal pad / heatsink (connect to GND plane) |
Typical Applications
TLE42694GMXUMA1 is suitable for 6 applications: Automotive Body Control Module (BCM) 5 V Rail, Sensor and Actuator 5 V Supply, Infotainment Head-Unit Auxiliary Rail, Instrument Cluster 5 V Logic Supply, 24 V Commercial Vehicle Body Electronics, IoT and Industrial 5 V Auxiliary Rail.
Automotive Body Control Module (BCM) 5 V Rail
The TLE42694GMXUMA1's 150 mA output and 45 V load-dump tolerance make it ideal for body-control modules that source a 5 V rail for microcontrollers, relay drivers, and CAN transceivers directly from the 12 V battery. The integrated reset/power-good function simplifies MCU power-rail supervision by asserting RESET when VOUT dips below threshold, eliminating a separate supervisor IC. AEC-Q100 qualification and -40 Β°C to +150 Β°C operation let the regulator sit on the same PCB as relay coils without derating.
Recommended
Sensor and Actuator 5 V Supply
Sensor and actuator ECUs in 12 V vehicles benefit from the TLE42694GMXUMA1's wide input tolerance and integrated protection. It supplies clean 5 V to Hall-effect sensors, pressure sensors, and small solenoid drivers while rejecting battery ripple and load-dump spikes up to 45 V. The 150 mA capability covers most multi-sensor PCBs, and the PG-DSO-14 footprint enables compact module designs. The thermal-shutdown feature protects the regulator when sensors fail short-circuit.
Recommended
Infotainment Head-Unit Auxiliary Rail
Infotainment head units require a clean, post-regulated 5 V rail for audio codecs, USB controllers, and small display drivers that sit downstream of the main switching pre-regulator. The TLE42694GMXUMA1 acts as an auxiliary LDO, suppressing switching-ripple noise that would otherwise couple into the audio DAC reference. Its 150 mA current is sufficient for codec + USB + bias networks. AEC-Q100 qualification supports placement inside the head-unit chassis on the same PCB as the audio amplifier.
Recommended
Instrument Cluster 5 V Logic Supply
Instrument clusters in cars and trucks use the TLE42694GMXUMA1 to generate a stable 5 V logic supply for stepper-motor gauge drivers, LCD backlight controllers, and telltale LEDs. The wide Vin range tolerates cranking dips and jump-start events on both 12 V and 24 V buses. The integrated reset output enables deterministic gauge zeroing on power-up. PG-DSO-14 with exposed pad provides sufficient thermal headroom for the 150 mA continuous load rating.
Recommended
24 V Commercial Vehicle Body Electronics
Commercial trucks, buses, and off-road vehicles operate on 24 V battery systems where jump-start transients reach 36 V and load-dump surges exceed 60 V. The TLE42694GMXUMA1's 45 V input rating (with external TVS) covers 24 V jump-start events while delivering 5 V to door modules, mirror controllers, and telematics units. Its AEC-Q100 qualification and -40 Β°C to +150 Β°C operating range suit under-dash and exterior-mounted enclosures. Reset output provides MCU power-rail integrity on noisy commercial-vehicle power nets.
Recommended
IoT and Industrial 5 V Auxiliary Rail
The TLE42694GMXUMA1 also serves industrial IoT gateways and PLCs that need a robust, automotive-derived 5 V rail from a 24 V or 36 V industrial bus. Its 45 V input tolerates rectified 24 VAC and inductive load transients on factory floors. Reset output interfaces cleanly with industrial microcontrollers requiring deterministic power-up behavior. AEC-Q100 qualification provides additional margin for industrial temperature and reliability requirements.
Recommended
Recommended Products Summary
Engineering reference data for TLE42694GMXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE42694GM | TLE4269GM | TPS7B4250QDCQRQ1 | TLE42744D | TLV70450QDCQRQ1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Texas Instruments | Infineon Technologies | Texas Instruments |
| Package | PG-DSO-14 | PG-DSO-14 (same) | PG-DSO-14 (same) | HTSSOP-14 / PG-DSO-14 (same) | PG-DSO-14 (same) | HTSSOP-14 / PG-DSO-14 (same) |
| 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 |
| Maximum Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 400 mA (+167%) | 150 mA |
| Input Voltage Range | Up to 45 V | Up to 45 V | Up to 45 V | Up to 40 V (-11%) | Up to 45 V | Up to 24 V (-47%) |
| Reset / Power-Good | Yes (with adjustable delay) | Yes (with adjustable delay) | Yes | Yes | Yes | Optional |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Unit Price (qty 1, USD) | $2.18 | ~$2.20 | ~$2.40 (legacy) | ~$2.60 | ~$2.40 | ~$1.50 |
Key Differentiators
- Wide 45 V input tolerance covers 24 V truck jump-start (vs TLV70450QDCQRQ1 (24 V max))
- Integrated reset/power-good with adjustable delay (vs TLE4269GM (predecessor))
- Same PG-DSO-14 footprint as 400 mA upgrade path (vs TLE42744D (400 mA, same package))
Design Notes
Estimated: at VIN = 14 V (typical running voltage on a 12 V automotive bus), VOUT = 5 V, and IOUT = 150 mA, power dissipation is approximately (14 V β 5 V) Γ 0.150 A = 1.35 W. The PG-DSO-14 with exposed pad dissipates this comfortably at moderate ambient; at VIN up to 45 V the dissipation rises to (45 β 5) Γ 0.150 = 6 W and external heatsinking or derating is required. Always validate against the datasheet SOA curve and provide adequate copper pour on the exposed pad.
Place input and output ceramic capacitors as close to the IC pins as possible per the Infineon datasheet. Use a low-ESR 1 Β΅Fβ10 Β΅F X7R ceramic on the input and a 1 Β΅Fβ10 Β΅F X7R ceramic on the output. Do not omit the DELAY capacitor if RESET is used β without it the reset delay collapses and downstream MCUs may see spurious resets. For 24 V trucks add a TVS diode (e.g., 36 V SMAJ) on the input to absorb jump-start transients beyond the part's 45 V rating.
Connect the PG-DSO-14 exposed thermal pad directly to a large GND copper pour to dissipate heat. Per the Infineon package drawing, the pad should have at least 1 cmΒ² of copper on the top layer (more on inner layers via thermal vias). Keep high-current traces (IN, OUT, GND) short and wide. Route the RESET trace away from switching nodes (relay coils, motor drivers) to avoid coupling noise into the reset comparator.
Estimated: at 150 mA continuous load and ambient 85Β°C, junction temperature rise = 1.35 W Γ theta_JA. For PG-DSO-14 with 1 cmΒ² copper pour, theta_JA is approximately 50 Β°C/W, giving T_J = 85 + 1.35 Γ 50 = 152 Β°C β right at the 150 Β°C thermal-shutdown limit. Reduce ambient, increase copper area, or derate current for safety margin. The part's thermal-shutdown circuit will protect the die, but repeated shutdowns indicate inadequate heatsinking.
Compliance Information
AEC-Q100 qualified per Infineon product page. RoHS / REACH compliant per distributor listings (DigiKey, Mouser environmental disclosures).
