TLE4678ELXUMA2 - 5V 200mA LDO w/ Reset | Infineon OPTIREG
MPN: TLE4678ELXUMA2 ✓ פעילTLE4678ELXUMA2 סקירה
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 output. LDO regulators sit in the broader hierarchy of voltage regulators under DC-DC and linear regulators, themselves a sub-class of power management ICs. They are valued for their low noise, simplicity, and absence of switching EMI, making them the preferred post-regulator for noise-sensitive analog, sensor, and microcontroller supply rails.
Key specifications include the 5 V fixed output, 200 mA continuous load, 45 V maximum input, low quiescent current consumption in normal operation, and an integrated reset generator with adjustable threshold. The exposed-pad PG-SSOP-14-EP package keeps thermal resistance low so the regulator can sustain 200 mA at high VIN without entering thermal shutdown, while the SSOP body footprint remains compatible with hand and reflow soldering.
The TLE4678ELXUMA2 uses a monolithic bipolar process integrating pass element, reference, reset comparator, and protection logic. The reset output asserts low when VOUT falls below the programmed threshold, providing a clean MCU brown-out signal. The watchdog can be serviced by the host controller to verify firmware health, an important safety feature for automotive ECUs.
Typical applications include automotive body and chassis ECUs, sensor supplies, dashboard controllers, and industrial microcontroller rails requiring 5 V regulation from 12 V or 24 V bus. The reset/watchdog integration reduces BOM count versus a separate LDO plus supervisor.
When designing with this part, place input and output ceramic capacitors close to the IC pins, observe the minimum output capacitance requirement specified by Infineon, and tie the exposed pad to a copper pour for heat extraction. The reset delay capacitor value sets the assertion pulse width and must be chosen per application timing.
This page synthesizes distributor pricing, drop-in alternatives, and design notes specific to the TLE4678ELXUMA2 footprint, providing practical information not consolidated on the manufacturer datasheet.
חלופות תחליף ישיר עבור TLE4678ELXUMA2 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם TLE4678ELXUMA2 (אותו גורם צורה וטביעת רגל) — שונים ב Package, Input Voltage Range, Maximum Output Current, Operating Temperature Range, RoHS Status.
TLE42754EXUMA2
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TLE72782EV50XUMA1
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TLE42744EV50XUMA1
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←TLS810B1LDV50XUMA1
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←TLE4678ELXUMA2 דירוגים מרביים ומאפיינים חשמליים
| Manufacturer | Infineon Technologies |
| Product Family | OPTIREG Linear |
| Regulator Type | LDO (Low-Dropout), Positive Fixed |
| מתח פלט | 5 V fixed |
| זרם מוצא מקסימלי | 200 mA |
| טווח מתח כניסה | Up to 45 V |
| Reset Output | Yes (integrated reset / watchdog) |
| Output Channels | 1 |
| מארז | PG-SSOP-14-EP (exposed pad) |
| טווח טמפרטורת פעולה | -40 C to +150 C (AEC-Q100 automotive) |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant (per DigiKey listing) |
| Lead-Free | Yes |
תצורת פינים של TLE4678ELXUMA2
| פין 1 | I — Input voltage |
| פין 2 | RADJ — Reset threshold adjust |
| פין 3 | Q — Output voltage (5 V) |
| פין 4 | WDI — Watchdog input |
| פין 5 | GND — Ground |
| פין 6 | RO — Reset output |
| פין 7 | DEL — Reset delay timing capacitor |
| פין 8 | NC — Not connected |
| פין 9 | NC — Not connected |
| פין 10 | NC — Not connected |
| פין 11 | NC — Not connected |
| פין 12 | NC — Not connected |
| פין 13 | NC — Not connected |
| פין 14 | GND/TAB — Ground / exposed thermal pad |
יישומים טיפוסיים
TLE4678ELXUMA2 מתאים עבור 6 יישוםs: Automotive Body Control Module, Dashboard Instrument Cluster Supply, Automotive Sensor Power Rail, Industrial 24V PLC Logic Supply, Body Sensor and Lighting ECU, Power Tool Battery Management Front-End.
Automotive Body Control Module
The TLE4678ELXUMA2 is a strong fit for 12 V/24 V automotive body control modules where its 5 V fixed output powers MCU and CAN transceiver rails. With 200 mA continuous load, 45 V input transient tolerance, and integrated reset/watchdog, the part eliminates the need for a separate supervisor IC. Place the regulator between the battery reverse-polarity protection FET and the MCU, with ceramic input/output capacitors and a copper pour under the exposed pad to keep junction temperature in check during cranking transients.
מומלץ
Dashboard Instrument Cluster Supply
Instrument clusters require a clean 5 V rail for display drivers, MCUs, and backlight controllers. The TLE4678ELXUMA2's low-noise LDO output and integrated reset signal ensure the MCU starts cleanly and the watchdog catches firmware lockups. The exposed-pad PG-SSOP-14-EP package keeps the regulator cool even when VIN sits at 13.8 V with full 200 mA load. Tie the reset capacitor to set the power-good delay appropriate for the MCU crystal startup.
מומלץ
Automotive Sensor Power Rail
Hall-effect, pressure, and position sensors in engine and chassis applications need a stable 5 V supply with low noise. The TLE4678ELXUMA2's bipolar LDO architecture provides clean power without switching EMI, and its 45 V input range handles 24 V truck systems and load-dump events. The integrated reset output can be repurposed to flag sensor supply brownouts to the ECU. Place the part close to the sensor connector with input capacitance sized per Infineon's minimum requirement.
מומלץ
Industrial 24V PLC Logic Supply
Industrial PLC digital input modules running on 24 V bus rails benefit from the TLE4678ELXUMA2's wide VIN range and 5 V fixed output for powering MCU logic, isolators, and status LEDs. The reset signal can directly drive a PLC supervisory circuit or be routed to the backplane. The exposed-pad PG-SSOP-14-EP package supports 200 mA at elevated ambient temperatures typical inside sealed control cabinets. Use a TVS diode on the input to clamp inductive kick from adjacent relay coils.
מומלץ
Body Sensor and Lighting ECU
Lighting ECUs controlling LED matrix headlights, tail lamps, and turn indicators require stable 5 V logic supplies alongside high-current LED driver stages. The TLE4678ELXUMA2 fits the logic-rail slot with its 5 V/200 mA rating, watchdog for the MCU, and AEC-Q100 automotive qualification. The exposed-pad package ensures thermal headroom when the regulator is co-located with LED driver MOSFETs on the same PCB. Use the reset output to sequence the LED driver enable lines.
מומלץ
Power Tool Battery Management Front-End
Cordless power tools using 18 V/36 V battery packs need a post-regulator to derive 5 V for MCU, display, and Bluetooth radio. The TLE4678ELXUMA2's wide VIN and automotive-grade robustness make it a reliable choice for harsh industrial environments. The integrated watchdog ensures the tool's safety controller remains responsive. Pair with a TVS on the input to absorb motor-braking transients.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור TLE4678ELXUMA2 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | TLE4678GM | TLE42754EXUMA2 | TLE72782EV50XUMA1 | TLE42744EV50XUMA1 | TLS810B1LDV50XUMA1 |
|---|---|---|---|---|---|---|
| Package | PG-SSOP-14-EP | PG-DSO-14 | PG-SSOP-14-EP | PG-SSOP-14 | PG-SSOP-14-EP | PG-SSOP-14-EP |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Output Voltage | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed |
| Output Current | 200 mA | 200 mA | 450 mA | 180 mA | 400 mA | 200 mA |
| Input Voltage Max | 45 V | 45 V | 42 V | 45 V | 45 V | 45 V |
| Reset / Watchdog | Yes (integrated) | Yes | No | Yes | No | No |
| AEC-Q100 | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C |
מבדילים עיקריים
- Integrated reset and watchdog in same SSOP-14 package (לעומתTLE42754EXUMA2)
- SSOP-14-EP exposed pad for automotive thermal performance (לעומתTLE4678GM)
- 45 V input transient tolerance (לעומתTLE42754EXUMA2)
הערות תכנון
Estimated: At VIN=13.8 V (typical automotive running voltage), VOUT=5 V, and 200 mA load, power dissipation is (13.8 - 5) * 0.2 = 1.76 W. With the PG-SSOP-14-EP exposed-pad package thermal resistance (per Infineon datasheet thermal data), the junction temperature rise above ambient should be kept below 100 C. Solder the exposed pad to a copper pour of at least 1 square inch to maintain thermal headroom. Higher VIN transients during load-dump will increase dissipation proportionally.
Place input and output ceramic capacitors as close as possible to the IC pins, with short and wide traces to minimize parasitic inductance. The exposed thermal pad must be soldered to the PCB and tied to a copper pour that connects to the ground plane. The reset delay capacitor on pin 7 should use a low-leakage ceramic or film dielectric; an X7R 100 nF is a typical starting value. Keep high-current switching nodes away from the regulator feedback traces.
Do not exceed the absolute maximum input voltage of 45 V, and add a TVS clamp if load-dump transients beyond this rating are expected. The watchdog input must be serviced by the host MCU within the programmed window, or the reset output will assert. Verify that the minimum output capacitance requirement per Infineon's datasheet is met; insufficient capacitance causes output instability. The reset threshold (RADJ) resistor divider must use 1% tolerance parts for accurate brown-out detection.
מידע על תאימות
AEC-Q100 qualified per Infineon OPTIREG Linear family datasheet. RoHS and lead-free per DigiKey product listing. Halogen-free status not explicitly stated in verified data - set to unknown.
