TLS810D1LDV33XUMA1 - 3.3V 100mA 42V LDO | Infineon OPTIREG
MPN： TLS810D1LDV33XUMA1 ✓ 啟用中TLS810D1LDV33XUMA1 概覽
What is an LDO (Low-Dropout) linear regulator? It is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only a few hundred millivolts above the desired output. LDOs belong to the broader hierarchy of linear regulators, which in turn fall under voltage regulators in the power management IC category. Because they use a resistive pass element instead of a switching converter, LDOs introduce no switching noise into the output — ideal for analog, RF, and sensor signal chains that demand clean rails.
Key features of the TLS810D1LDV33XUMA1 include its 9 µA ultra-low quiescent current, an enable pin for power sequencing, internal current limiting, and thermal shutdown with integrated output discharge. Its automotive-grade qualification (AEC-Q100) and ability to operate from -40 °C to +125 °C junction temperature ensure robust performance in under-hood and chassis-mounted modules.
Technically, the regulator uses a P-channel MOSFET pass architecture, which is why the quiescent current is independent of load. The wide input range is implemented with a pre-regulator structure that gracefully handles transients such as 42 V load-dump pulses common in 12 V automotive systems. The output is internally set to 3.3 V with ±2 % accuracy, eliminating external feedback resistors.
Typical applications include automotive body-control modules, sensor supplies (e.g., for tire-pressure monitoring), CAN/LIN transceivers, infotainment standby rails, and industrial 24 V sensor nodes. Designers value it whenever a 3.3 V rail must stay alive during cranking dips below 6 V without draining the battery.
When designing with this part, evaluate worst-case dropout at -40 °C and remember that the exposed pad must be soldered to a sufficiently large copper pour to keep the junction temperature within limits under full 100 mA load.
This page synthesizes distributor pricing, AEC-Q100 compliance details, drop-in same-family Infineon alternatives, and practical thermal design notes not aggregated on the manufacturer datasheet alone.
直接替換替代品，適用於 TLS810D1LDV33XUMA1 — 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： TLS810D1LDV33XUMA1 （相同外形與佔位） — 差異在於 Package, Input Voltage Range, Output Type, Output Voltage Accuracy, Topology.
TLS810D1LDV50XUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLS810B1EJV33XUMA1
✅ 直接替換📋 參考替代品（不在目錄中）
TLE42744EV50XUMA1
✅ 直接替換聯絡詢價
查看資料表 →ILD8150EXUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLS4125D0EPV50XUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLS810D1LDV33XUMA1 最大額定值與電氣特性
| Manufacturer | Infineon Technologies |
| Series | OPTIREG Linear (TLS810D1) |
| 輸出類型 | Fixed |
| 輸出電壓 | 3.3 V |
| Output Current (Maximum) | 100 mA |
| 輸入電壓範圍 | 2.75 V to 42 V |
| Quiescent Current (typical) | 9 µA |
| Output Voltage Accuracy | ±2 % |
| Enable Input | Yes (active-high) |
| Output Discharge | Yes (internal pull-down) |
| 工作接面溫度 | -40 °C to +125 °C |
| 過熱關機 | Yes (internal) |
| 電流限制 | Yes (internal) |
| 封裝 | PG-TSON-10-2 (10-pin TSON with exposed pad) |
| 安裝類型 | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified |
| RoHS / REACH | RoHS compliant (per distributor listing); REACH status unknown |
TLS810D1LDV33XUMA1 腳位配置
| 腳位 1 | OUT — Regulated 3.3 V output |
| 腳位 2 | NC — Not connected (per datasheet) |
| 腳位 3 | GND — Ground reference |
| 腳位 4 | NC — Not connected (per datasheet) |
| 腳位 5 | EN — Enable input (active-high) |
| 腳位 6 | IN — Input supply voltage |
| 腳位 7 | IN — Input supply voltage |
| 腳位 8 | NC — Not connected (per datasheet) |
| 腳位 9 | NC — Not connected (per datasheet) |
| 腳位 10 | NC — Not connected (per datasheet) |
| 腳位 EP | Exposed Pad — Thermal pad, must be soldered to PCB copper pour and tied to GND |
典型應用
TLS810D1LDV33XUMA1 適用於 6 應用s: Automotive Body Control Module (BCM) Standby Rail, Tire Pressure Monitoring Sensor (TPMS) Supply, Industrial 24 V Sensor Node Supply, CAN/LIN Transceiver Power Rail, Infotainment Head-Unit Standby Supply, Battery-Backed IoT Edge Device Supply.
Automotive Body Control Module (BCM) Standby Rail
The TLS810D1LDV33XUMA1's 9 µA quiescent current and 2.75 V to 42 V input range make it ideal as a permanent 3.3 V standby rail inside an automotive BCM. With a typical key-off load of 100 µA and a peak MCU active current of 80 mA, the 100 mA rating provides comfortable headroom. Its AEC-Q100 qualification and -40 °C to +125 °C junction range cover the full automotive operating envelope, while its P-channel pass design keeps Iq independent of load — preventing battery drain during long parked periods where the BCM must remain alive for keyless-entry polling.
推薦
Tire Pressure Monitoring Sensor (TPMS) Supply
TPMS sensors spend most of their life in sleep mode and must wake briefly to transmit pressure readings. The TLS810D1LDV33XUMA1's 9 µA Iq translates directly into years of additional battery life, while its 100 mA peak output handles the RF transmitter's transmit burst. The 42 V input survivability protects the regulator against automotive jump-start and load-dump transients induced by the wheel-mounted electronics, and the small TSON-10 package fits inside the constrained valve-stem sensor housing.
推薦
Industrial 24 V Sensor Node Supply
Industrial 24 V sensor networks often require a quiet 3.3 V rail for analog front-ends and isolated transceivers. The TLS810D1LDV33XUMA1 accepts the full 24 V nominal rail plus tolerance and common-mode transients without pre-regulation, eliminating a buck stage. Its 9 µA Iq allows battery-backed sensor nodes to operate for years, and its LDO topology introduces no switching noise into the analog signal path — critical for strain-gauge and RTD front-ends where µV-level signals matter.
推薦
CAN/LIN Transceiver Power Rail
Automotive CAN and LIN transceivers typically operate from a 5 V or 3.3 V local rail that must remain stable through cranking. The TLS810D1LDV33XUMA1's 3.3 V fixed output and tracking-region start at 2.75 V let it supply a 3.3 V CAN-FD transceiver through 6 V cranking dips without losing regulation. Its 100 mA budget covers the transceiver plus small logic loads, and its internal current limit and thermal shutdown protect against harness short-circuit faults common in vehicle wiring.
推薦
Infotainment Head-Unit Standby Supply
Automotive infotainment head units retain memory and respond to remote-key wake events while parked. The TLS810D1LDV33XUMA1 provides a 3.3 V rail that stays alive when the main PMIC is off, drawing only 9 µA to preserve the battery. Its enable pin lets the main SoC power down the rest of the rail cleanly via the output discharge feature, while its 100 mA capability easily handles retention registers, RTC, and standby microcontrollers.
推薦
Battery-Backed IoT Edge Device Supply
IoT edge devices powered from a lithium primary cell or energy harvester must minimize quiescent draw to maximize lifetime. The TLS810D1LDV33XUMA1's 9 µA Iq is one of the lowest in its voltage-and-package class, and its 42 V input tolerance protects against field-installed miswiring and ESD events. The fixed 3.3 V output feeds low-power MCUs and radio modules directly, eliminating the cost and quiescent penalty of an external buck converter in cost-sensitive wireless sensor nodes.
推薦
推薦產品摘要
工程參考資料，適用於 TLS810D1LDV33XUMA1 — 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 | TLS810D1LDV50XUMA1 | TLS810B1EJV33XUMA1 | TLE42744EV50XUMA1 | ILD8150EXUMA1 | TLS4125D0EPV50XUMA1 |
|---|---|---|---|---|---|---|
| Package | PG-TSON-10-2 | PG-TSON-10-2 (same) | DSO-8 (different) | PG-TSON-10-2 (same) | PG-TSON-10-2 (same) | PG-TSON-10-2 (same) |
| Brand | Infineon | Infineon (same) | Infineon (same) | Infineon (same) | Infineon (same) | Infineon (same) |
| Output Voltage | 3.3 V | 5.0 V | 3.3 V | 5.0 V | LED driver (not LDO) | 5.0 V |
| Output Current | 100 mA | 100 mA | 100 mA | 400 mA | LED driver (not LDO) | 400 mA |
| Input Voltage Range | 2.75 V to 42 V | 2.75 V to 42 V | 2.75 V to 42 V | 4.5 V to 40 V | LED driver (not LDO) | 4.0 V to 45 V |
| Quiescent Current (typical) | 9 µA | 9 µA | 9 µA | ~200 µA | LED driver (not LDO) | ~30 µA |
| Topology | LDO (P-channel pass) | LDO (P-channel pass) | LDO (P-channel pass) | LDO (P-channel pass) | LED driver (different topology) | LDO (P-channel pass) |
| Enable Pin | Yes (active-high) | Yes (active-high) | Yes (active-high) | Yes (active-high) | LED driver (different) | Yes (active-high) |
主要差異化特點
- Ultra-low 9 µA quiescent current independent of load (對比TLE42744EV50XUMA1)
- Wide 2.75 V to 42 V input range with cranking tracking region (對比TLS810B1EJV33XUMA1)
- AEC-Q100 qualified in a tiny TSON-10 package (對比TLE42744EV50XUMA1)
設計說明
Estimated: at VIN = 14 V (typical automotive cranking-with-load condition), VOUT = 3.3 V, and IOUT = 100 mA, power dissipation is roughly (14 - 3.3) × 0.1 = 1.07 W. The PG-TSON-10-2 package has an exposed thermal pad that MUST be soldered to at least 100 mm² of copper pour (preferably 1 oz copper on both sides connected by thermal vias) to keep the junction temperature rise under the 125 °C absolute maximum. Without adequate copper, the device will enter thermal shutdown at moderate ambient temperatures.
Place the input capacitor (1 µF X7R minimum, 10 µF recommended for automotive load-dump robustness) within 3 mm of the IN pin to suppress input-voltage transients. Place a 1 µF X7R (or larger) low-ESR ceramic capacitor on the OUT pin within 5 mm to ensure regulator stability. Avoid routing noisy digital or switcher traces across the exposed pad's copper pour to preserve the regulator's PSRR and noise performance.
Do not exceed the 42 V absolute-maximum input rating, even transiently. For 24 V truck systems with load-dump pulses that can reach 58 V, add a TVS clamp (such as a 36 V bidirectional SMBJ-series TVS) upstream of the regulator. Also, do not leave the EN pin floating — tie it to IN through a 100 kΩ pull-up if unused, because a floating EN can drift into the indeterminate region and cause unpredictable output behavior.
合規資訊
AEC-Q100 qualified per Infineon OPTIREG Linear family documentation. RoHS compliance confirmed via distributor listings; REACH and halogen-free status not explicitly stated in the verified data and marked 'unknown' to comply with data authenticity policy.
