TLE42702DATMA1 - 5V 650mA LDO Regulator, 42V Input | Infineon
MPN： TLE42702DATMA1 ✓ 啟用中TLE42702DATMA1 概覽
A low-dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally higher than the output - the 'dropout' being the minimum VIN-VOUT differential required for regulation. LDOs sit in the linear-regulator branch of the broader power-management IC family and are chosen over switching converters when low noise, fast transient response, and minimal external component count outweigh efficiency. The TLE42702 belongs to the classic automotive 5 V CAN/MCU supply family, where its wide VIN tolerance, short-circuit protection, and overtemperature shutdown are mandatory.
Key features of the TLE42702DATMA1 include a typical dropout of 350 mV at full load, integrated short-circuit current limiting, thermal shutdown with hysteresis, and an enable input for power sequencing. Reverse-polarity protection on the input is built in, along with a reset/watchdog output on the 'G' suffix variant that is often co-designed with this part in microcontroller supply chains. Quiescent current is held low enough that the regulator remains suitable for always-on standby rails in body and chassis ECUs.
Technically, the device uses a PNP pass-element architecture with a precision bandgap reference, yielding a stable 5 V rail across load, line, and temperature variations. The exposed tab of the DPAK-5 package provides a low thermal resistance path so that the IC can sustain the calculated worst-case dissipation without external heatsinking at moderate load currents. Robust ESD and load-dump robustness make this part attractive for harsh-environment industrial controls as well as automotive platforms.
Typical applications include 5 V supply generation for automotive microcontrollers, body and chassis ECUs, CAN transceivers, and sensor clusters, as well as industrial PLC I/O, building automation, and any 12 V / 24 V bus system that needs a clean, protected 5 V rail. In each case the regulator's wide VIN range removes the need for a pre-regulation switching stage.
When designing with the TLE42702DATMA1, ensure that VIN-VOUT x IOUT does not exceed the package's thermal envelope, and place the input capacitor close to the IC tab for stability. The reset output on the companion 'G' variant simplifies MCU supervision but is not present on the 'D' variant captured here.
This page synthesizes Infineon datasheet data, distributor stock and pricing snapshots, drop-in alternatives from the same Infineon OPTIREG family, and practical design notes not assembled in any single manufacturer or distributor page.
直接替換替代品，適用於 TLE42702DATMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLE42702DATMA1 （相同外形與佔位） — 差異在於 Dropout Voltage, Input Voltage Range, Output Voltage Accuracy, Package.
TLE42702GATMA1
✅ 直接替換📋 參考替代品（不在目錄中）
TLE42702EATMA1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLE4270SNKSA1
✅ 直接替換📋 參考替代品（不在目錄中）
TLE42702DATMA1 最大額定值與電氣特性
| Regulator Type | LDO, Positive Fixed |
| 輸出電壓 | 5 V |
| Output Voltage Accuracy | ±2% (up to VIN = 26 V, IOUT ≤ 650 mA) |
| 輸出電流 (最大) | 650 mA |
| 輸入電壓範圍 | 6 V to 42 V |
| Transient Input Voltage | 65 V for 400 ms |
| 壓降電壓 | 350 mV (typ, at 650 mA) |
| Short-Circuit Protection | Yes (current limit) |
| 過熱關機 | Yes (with hysteresis) |
| Reverse Polarity Protection | Yes (input) |
| Enable Input | Yes |
| Operating Temperature (junction) | -40 °C to +150 °C |
| 封裝 | PG-TO252-5-11 (DPAK-5, 4 leads + tab) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Automotive Qualified | Yes (Infineon automotive grade) |
TLE42702DATMA1 腳位配置
| 腳位 1 | IN — Input voltage (6 V to 42 V) |
| 腳位 2 | GND — Ground |
| 腳位 3 | OUT — Regulated 5 V output |
| 腳位 4 | EN — Enable input (active high on TLE4270-2D family) |
| 腳位 5 | TAB/OUT — Exposed tab - electrically same as OUT (per PG-TO252-5-11 datasheet outline); also serves as thermal pad |
典型應用
TLE42702DATMA1 適用於 6 應用s: Automotive 12V Body & Chassis ECU Supply, Industrial 24V Sensor and PLC I/O Supply, CAN Node Power in Vehicle Networks, HVAC Control Module Power, Instrument Cluster and Body Controller Supply, Battery-Backed Always-On Standby Rail.
Automotive 12V Body & Chassis ECU Supply
The TLE42702DATMA1 delivers a clean 5 V rail at 650 mA from a 12 V automotive bus, making it ideal for body and chassis ECUs that need to ride through cranking dips and load-dump transients. Its 42 V continuous / 65 V transient input rating covers ISO 7637 pulse profiles without external TVS clamping. Built-in reverse-polarity and short-circuit protection simplify the BOM, and the DPAK-5 tab provides adequate heat spreading for sustained 650 mA loads on a 1 sq-in copper pour.
推薦
Industrial 24V Sensor and PLC I/O Supply
PLC digital inputs, analog sensor clusters, and 24 V industrial buses benefit from the TLE42702DATMA1's wide 6 V-42 V input window, eliminating the need for a pre-regulation switching stage. The 650 mA output can power a small bank of 4-20 mA loops, encoder supplies, or several digital isolators simultaneously. Its fixed 5 V output keeps the downstream ADC reference stable, and thermal shutdown plus current limiting protect the rail when a field-wiring fault occurs.
推薦
CAN Node Power in Vehicle Networks
Each CAN node needs a regulated 5 V supply for its transceiver and microcontroller. The TLE42702DATMA1 provides exactly that from the vehicle's 12 V or 24 V battery rail, with load-dump tolerance that matches the ISO 7637-2 pulses found on automotive wiring harnesses. The 350 mV dropout allows the regulator to maintain regulation during engine cranking dips down to ~5.4 V on a 12 V bus, so the network stays alive when other rails collapse.
推薦
HVAC Control Module Power
Automotive HVAC modules drive fans, blend doors, and NTC sensors from a regulated 5 V supply. The TLE42702DATMA1's 650 mA output is enough to power the microcontroller, sensors, and a small driver pre-regulator simultaneously. Its wide temperature range (-40 °C to +150 °C junction) handles the under-dash thermal environment, and the DPAK-5 package dissipates heat efficiently into the module's aluminum chassis.
推薦
Instrument Cluster and Body Controller Supply
Instrument clusters and body controllers require a robust 5 V rail that tolerates wide VIN swings on the battery line. The TLE42702DATMA1's 6 V-42 V continuous input range handles cold-crank and load-dump events without supervision, and its quiescent current keeps standby battery drain low when the vehicle is parked. The DPAK-5 footprint is also footprint-compatible with the TLE42702GATMA1 reset-output variant, allowing PCB reuse between cluster SKUs.
推薦
Battery-Backed Always-On Standby Rail
Body controllers often keep a small portion of logic alive when the ignition is off, drawing only microamps from the battery. The TLE42702DATMA1's low quiescent current and 5 V fixed output let it feed always-on timers and key-fob receivers without draining the battery. Its wide VIN range tolerates jump-start events where the bus can exceed 36 V transiently, and reverse-polarity protection prevents damage from a crossed jumper cable.
推薦
推薦產品摘要
工程參考資料，適用於 TLE42702DATMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLE42702GATMA1 | TLE42702EATMA1 | TLE4270SNKSA1 |
|---|---|---|---|---|
| Package | PG-TO252-5-11 (DPAK-5) | PG-TO252-5-11 (DPAK-5) - same | PG-TO252-5-11 (DPAK-5) - same | PG-TO220-5 - through-hole, different footprint |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Output Voltage | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed |
| Output Current | 650 mA | 650 mA | 650 mA | 650 mA |
| Input Voltage (continuous) | 42 V | 42 V | 42 V | 42 V |
| Dropout Voltage | 350 mV (typ at 650 mA) | 350 mV | 350 mV | 350 mV |
| Reset Output | No | Yes (active-low reset with adjustable delay) | No | No |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Through-Hole |
| Automotive Qualified | Yes | Yes | Yes | Yes |
主要差異化特點
- No reset/watchdog pin - simpler BOM for designs with a separate supervisor (對比TLE42702GATMA1)
- Wide 42 V continuous / 65 V transient input window (對比TLE42702EATMA1)
- SMT DPAK-5 package suitable for automated assembly (對比TLE4270SNKSA1)
設計說明
Estimated: at VIN=12V, VOUT=5V, IOUT=650 mA, power dissipation is (12-5) x 0.65 = 4.55 W. The PG-TO252-5-11 package has a junction-to-ambient thermal resistance around 50 C/W on a 1 sq-in copper pour, producing a 227 C temperature rise above ambient at full load. Sustained operation at 650 mA requires a copper pour of at least 1 sq-in or a small heatsink tab soldered to the exposed pad. Derate load above 26 V input, where VIN-VOUT x IOUT losses grow.
Place a 1 µF to 10 µF low-ESR ceramic input capacitor as close as possible to the IN pin and tab to suppress input ripple and ensure stability. Use the same on the OUT pin to handle load transients - the TLE42702 datasheet specifies a minimum 10 µF output capacitance for full stability. Keep the GND return path short and connect it directly to a ground plane to avoid ground bounce during load steps.
Do not exceed the 42 V continuous input rating - load-dump transients above this need an external TVS clamp sized to clamp below 42 V at peak current. Verify the enable-pin logic level matches your MCU rail (the 'D' variant EN is TTL-compatible); leaving EN floating may cause undefined startup behavior. The exposed tab is electrically the output node on TLE4270-2D variants - do not assume it is GND as on some DPAK regulators.
Route the high-current input and output traces directly to the IC pins with wide copper, and stitch the ground plane underneath to provide a low-impedance thermal path. Keep the EN trace away from the IN/OUT switching nodes to avoid capacitive coupling that could falsely toggle the enable input during transient events.
合規資訊
Infineon automotive-grade OPTIREG family. RoHS and REACH compliant per distributor listings; AEC-Q100 qualified for automotive applications. Request IMDS / material declaration directly from Infineon for full PPAP documentation.
