TLE42754DATMA1 - 5V 450mA LDO Regulator | Infineon OPTIREG
MPN: TLE42754DATMA1 ✓ Hoạt độngTLE42754DATMA1 Tóm tắt
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 → linear regulator → voltage regulator → power management IC → 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 — 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 °C to +150 °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 °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 — use it to evaluate sourcing options and PCB thermal strategies in one place.
Bộ thay thế dễ dàng lắp đặt cho TLE42754DATMA1 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với TLE42754DATMA1 (cùng hình factor và footprint) — khác nhau ở Maximum Output Current, Package, Input Voltage Range, Output Voltage Accuracy, RoHS Status.
TLE42754D
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
NCV4275DTRKG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
NCV4275DTRK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
L4949ED013TR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TLE4267G
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TLE42754DATMA1 Tỷ lệ tối đa & tính chất điện
| Manufacturer | Infineon Technologies |
| Product Family | OPTIREG™ linear |
| Regulator Topology | Low-Dropout (LDO) Linear Regulator |
| Kiểu đầu ra | Fixed |
| Nominal Output Voltage | 5.0 V |
| Output Voltage Accuracy | ±2% |
| Điện áp tối đa đầu ra | 450 mA |
| Phạm vi điện áp đầu vào | 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 |
| Nhiệt độ mối nối hoạt động | -40 °C to +150 °C |
| Hộp | TO-252-5 (DPAK, 4 Leads + Tab), PG-TO252-5 |
| Kiểu lắp đặt | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 1 |
Cấu hình chân TLE42754DATMA1
| Chân 1 | VIN — Input voltage (5.5 V to 42 V) |
| Chân 2 | GND — Ground reference |
| Chân 3 | RO — Reset output, active-low, open-collector |
| Chân 4 | RADJ — Reset delay adjustment / timing capacitor |
| Chân 5 | VQOUT — Regulated 5.0 V output (also internally connected to die substrate) |
Ứng dụng tiêu biểu
TLE42754DATMA1 phù hợp cho 7 Áp dụngs: 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 µF low-ESR ceramic on the input and a 22 µF on the output for stability across all load steps.
Được đề xuất
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.
Được đề xuất
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 °C to +150 °C junction ensures operation in the under-dash thermal environment. The fixed 5 V ±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.
Được đề xuất
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.
Được đề xuất
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 µF X7R bypass directly at the image-sensor AVDD pin for high-frequency decoupling.
Được đề xuất
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 °C junction limit when mounted on 1 oz copper.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TLE42754DATMA1 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Adjustable reset delay via external RADJ capacitor (vsNCV4275DTRKG)
- Higher output current with same DPAK footprint (vsL4949ED013TR)
- Lower dropout preserves regulation during cranking (vsNCV4275DTRKG)
Ghi chú thiết kế
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 °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 (≥10 µF X7R low-ESR ceramic) within 5 mm of the VIN pin and the output capacitor (≥22 µF 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 — it is open-collector and requires an external pull-up resistor (typically 10 kΩ 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.
Thông tin tuân thủ
AEC-Q100 qualified per Infineon OPTIREG datasheet. RoHS and REACH compliant per DigiKey product listing. Halogen-free per JEDEC JS709B.
