TLE42754DATMA1 - 5V 450mA LDO Regulator | Infineon OPTIREG
MPN: TLE42754DATMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.34 | $134.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.98 | $980.00 |
| 2,500 | $0.86 | $2,150.00 |
TLE42754DATMA1 Overview
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the desired output. LDOs occupy a specific position in the broader hierarchy: LDO β linear regulator β voltage regulator β power management IC β semiconductor. Compared to switching regulators, an LDO trades efficiency for simplicity: it has no inductor, generates no EMI, and provides extremely clean output with low ripple β properties that make it indispensable for always-on rails, sensor supplies, and post-regulation after a switching pre-regulator.
Key specifications of the TLE42754D include a 5.5 V to 42 V input operating range, 450 mA continuous output current, 250 mV typical dropout at 450 mA, integrated reset output with adjustable delay, reverse-polarity and reverse-current protection on the input, and an operating junction temperature range of -40 Β°C to +150 Β°C. The reset (RO) signal asserts low when the regulated output drops below a programmed threshold, providing MCU supervision without an external supervisor IC.
Architecturally, the TLE42754D uses a monolithic bipolar process with a PNP pass transistor to achieve the low dropout, paired with a precision bandgap reference and on-chip compensation. The AEC-Q100 qualification, wide input range, and integrated protections target harsh automotive environments, while the DPAK package's thermal pad allows direct PCB heat-sinking to copper pours.
Typical applications include automotive body and chassis ECUs, instrument clusters, HVAC controllers, sensor and actuator supplies, and industrial 24 V bus systems. The 5 V fixed output is a near-universal supply rail for microcontrollers, CAN transceivers, and ASICs.
When designing with this part, pay attention to power dissipation at high input voltages: at VIN = 24 V, VOUT = 5 V and 450 mA, the regulator dissipates roughly 8.6 W, requiring adequate copper heatsinking to keep the junction within its 150 Β°C limit. Decouple input and output with low-ESR ceramic capacitors placed close to the pins to ensure stability.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design guidance that is not available on a bare datasheet link β use it to evaluate sourcing options and PCB thermal strategies in one place.
Drop-in alternatives for TLE42754DATMA1 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 TLE42754DATMA1 (same form factor and footprint) β differing in Maximum Output Current, Package, Input Voltage Range, Output Voltage Accuracy, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE42754D
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
NCV4275DTRKG
β Drop-Inπ Reference alternative (not in catalog)
NCV4275DTRK
β Drop-Inπ Reference alternative (not in catalog)
L4949ED013TR
β Drop-Inπ Reference alternative (not in catalog)
TLE4267G
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLE42754DATMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | OPTIREGβ’ linear |
| Regulator Topology | Low-Dropout (LDO) Linear Regulator |
| Output Type | Fixed |
| Nominal Output Voltage | 5.0 V |
| Output Voltage Accuracy | Β±2% |
| Maximum Output Current | 450 mA |
| Input Voltage Range | 5.5 V to 42 V |
| Dropout Voltage (typical at 450 mA) | 250 mV |
| Reset Output | Integrated, active-low, adjustable delay |
| Current Limitation | Integrated (short-circuit proof) |
| Overtemperature Shutdown | Integrated |
| Reverse Polarity Protection | Integrated on input |
| Operating Junction Temperature | -40 Β°C to +150 Β°C |
| Package | TO-252-5 (DPAK, 4 Leads + Tab), PG-TO252-5 |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
| MSL Level | 1 |
TLE42754DATMA1 Pin Configuration
| Pin 1 | VIN β Input voltage (5.5 V to 42 V) |
| Pin 2 | GND β Ground reference |
| Pin 3 | RO β Reset output, active-low, open-collector |
| Pin 4 | RADJ β Reset delay adjustment / timing capacitor |
| Pin 5 | VQOUT β Regulated 5.0 V output (also internally connected to die substrate) |
Typical Applications
TLE42754DATMA1 is suitable for 7 applications: Automotive Body Control Module (BCM), Instrument Cluster Power Supply, HVAC Control Module, Industrial 24 V Sensor / Actuator Supply, Sensor and Camera ECU, Battery-Management Slave Board Supply, Aftermarket Telematics and Tracking Unit.
Automotive Body Control Module (BCM)
The TLE42754DATMA1 is well suited as the always-on 5 V rail in automotive body control modules because its 42 V maximum input tolerates 12 V and 24 V bus load-dump transients without external TVS clamping. Per the Infineon datasheet, the integrated reset output with adjustable delay provides deterministic MCU power-good signaling, while the 450 mA current rating easily drives CAN transceivers, relay drivers, and small MCUs. Designers benefit from AEC-Q100 qualification and reverse-polarity protection, eliminating the need for discrete input protection. Place a 10 Β΅F low-ESR ceramic on the input and a 22 Β΅F on the output for stability across all load steps.
Recommended
Instrument Cluster Power Supply
Instrument clusters require a clean, ripple-free 5 V supply for stepper-motor drivers, display backlights, and microcontroller logic, all of which the TLE42754DATMA1 provides from a single DPAK regulator. The 250 mV typical dropout keeps the rail in regulation during cold-crank dips of the 12 V bus. The integrated reset and overtemperature shutdown align with functional-safety requirements for ASIL-A cluster domains. The DPAK thermal pad allows the heat of high-input-voltage operation to dissipate into the cluster PCB copper pour without an external heatsink.
Recommended
HVAC Control Module
In HVAC control modules the TLE42754DATMA1 supplies 5 V to the microcontroller, sensors (NTC temperature, pressure), and LIN-bus transceiver. Its AEC-Q100 grade-1 temperature range of -40 Β°C to +150 Β°C junction ensures operation in the under-dash thermal environment. The fixed 5 V Β±2% output removes the need for feedback resistors, simplifying PCB layout in space-constrained HVAC modules. Reverse-polarity protection defends against mis-wired battery cables in service bays.
Recommended
Industrial 24 V Sensor / Actuator Supply
The TLE42754DATMA1's 42 V input rating makes it a drop-in LDO for industrial 24 V PLC backplanes, sensor hubs, and actuator drivers where clean, low-noise 5 V rails are required downstream of a switching pre-regulator. The 450 mA current capacity easily supports multiple analog sensor chains and a microcontroller. The integrated current limit and overtemperature shutdown protect against field wiring faults in industrial environments. Designers should compute worst-case dissipation: at 24 V in / 5 V out / 450 mA, the regulator drops about 8.6 W, requiring a 1-square-inch copper pour.
Recommended
Sensor and Camera ECU
Rear-view camera and ADAS sensor ECUs demand ultra-low-noise 5 V rails to power image sensors and CAN-FD transceivers, exactly the application profile for which the OPTIREG TLE42754DATMA1 was designed. Because it is a linear LDO, the part adds zero switching ripple onto the analog supply, preserving image-sensor dynamic range. The 450 mA budget supports a single image sensor plus companion logic, and the AEC-Q100 qualification satisfies automotive EMI and reliability requirements. Place a 1 Β΅F X7R bypass directly at the image-sensor AVDD pin for high-frequency decoupling.
Recommended
Battery-Management Slave Board Supply
In 12 V or 24 V battery-management systems (BMS), the TLE42754DATMA1 provides a quiet 5 V rail for cell-monitoring ICs and isolation transceivers. Its 5.5 V minimum input allows operation directly from a single lithium cell during deep-discharge telemetry, while the 42 V ceiling survives the 48 V supply transient during pre-charge. The integrated reset output can be wired to the cell-monitor MCU's watchdog for safe brown-out handling. The DPAK thermal pad supports continuous 450 mA load without exceeding the 150 Β°C junction limit when mounted on 1 oz copper.
Recommended
Aftermarket Telematics and Tracking Unit
Telematics units connected to the OBD-II port or wired permanently to the vehicle battery benefit from the TLE42754DATMA1's wide input range and integrated protections. The 450 mA output comfortably powers a GNSS module, 4G modem in low-duty-cycle, and an MCU. Reverse-polarity and overtemperature protection guard against installation errors and engine-bay heat. The fixed 5 V output matches the supply voltage of most popular GNSS and cellular modules, eliminating a second regulator stage.
Recommended
Recommended Products Summary
Engineering reference data for TLE42754DATMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE42754D | NCV4275DTRKG | NCV4275DTRK | L4949ED013TR | TLE4267G |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | onsemi | onsemi | STMicroelectronics | Infineon Technologies |
| Package | TO-252-5 (DPAK) | TO-252-5 (DPAK) - same | TO-252-5 (DPAK) - same | TO-252-5 (DPAK) - same | TO-252-5 (DPAK) - same | TO-252-5 (DPAK) - 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 | 450 mA | 450 mA | 450 mA | 450 mA | 100 mA | 400 mA |
| Input Voltage Range | 5.5 V to 42 V | 5.5 V to 42 V | 5.5 V to 45 V | 5.5 V to 45 V | 6 V to 28 V | 5.5 V to 42 V |
| Dropout Voltage | 250 mV @ 450 mA (typ) | 250 mV @ 450 mA | 500 mV @ 450 mA | 500 mV @ 450 mA | 450 mV @ 100 mA | 280 mV @ 400 mA |
| Reset Output | Yes, adjustable delay | Yes, adjustable delay | Yes, fixed delay | Yes, fixed delay | Yes | Yes |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Unit Price @ 1k (USD, approx) | 0.98 | 0.98 (same die) | 0.85 | 0.85 | 0.95 | 1.10 |
Key Differentiators
- Adjustable reset delay via external RADJ capacitor (vs NCV4275DTRKG)
- Higher output current with same DPAK footprint (vs L4949ED013TR)
- Lower dropout preserves regulation during cranking (vs NCV4275DTRKG)
Design Notes
Estimated: at VIN = 24 V, VOUT = 5 V and IOUT = 450 mA, the regulator dissipates approximately 8.6 W. The DPAK (TO-252-5) thermal pad must be soldered to a copper pour of at least 1 square inch on a 1 oz PCB to keep the junction below 125 Β°C. Without adequate copper, the integrated overtemperature shutdown will trigger under full load, causing output dropouts in 24 V commercial-vehicle systems.
Place the input capacitor (β₯10 Β΅F X7R low-ESR ceramic) within 5 mm of the VIN pin and the output capacitor (β₯22 Β΅F X7R) within 5 mm of the VQOUT pin to ensure loop stability. Connect the DPAK thermal tab directly to a top-layer copper pour that is stitched with thermal vias to the inner/ground planes. Keep the reset (RO) trace away from switching nodes to avoid false reset pulses.
Do not assume the reset output (RO) is push-pull β it is open-collector and requires an external pull-up resistor (typically 10 kΞ© to VQOUT). Driving an MCU reset input directly without the pull-up results in a floating reset line. Also, the reset delay capacitor on RADJ must use a low-leakage dielectric; ceramic X7R is preferred over Y5V to avoid timing drift over temperature.
For designs where the input can momentarily exceed 42 V (e.g., jump-start on 24 V trucks), add a 47 V TVS such as SMBJ43A on VIN. The Infineon datasheet specifies the absolute maximum input at 42 V; transients beyond this can permanently damage the pass transistor. For 12 V passenger-vehicle systems, the internal load-dump protection is sufficient and no external TVS is required.
Compliance Information
AEC-Q100 qualified per Infineon OPTIREG datasheet. RoHS and REACH compliant per DigiKey product listing. Halogen-free per JEDEC JS709B.
