TLS810A1LDV33XUMA1 - 100mA, 3.3V Automotive LDO | Infineon
MPN： TLS810A1LDV33XUMA1 ✓ 啟用中TLS810A1LDV33XUMA1 概覽
What is an LDO? A low-dropout linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential is small (the "dropout"). LDOs sit in the broader hierarchy of voltage regulators within power management ICs: LDO -> linear regulator -> voltage regulator -> power management IC -> semiconductor. Unlike a switching converter, an LDO does not switch current; it dissipates (VIN - VOUT) x IOUT as heat, which trades efficiency for low noise and a small PCB footprint.
Key differentiating features of the TLS810A1LDV33XUMA1 are its ultra-low 5 uA quiescent current (suitable for always-on battery nodes), 42 V wide input range (covers 24 V truck-board net and load-dump transients), and AEC-Q100 qualification with integrated protective functions (current limit, overtemperature shutdown). The PG-TSON-10-2 package with exposed thermal pad provides low thermal resistance, helping dissipate the (VIN-VOUT) x IOUT loss at higher VIN. The wide VIN also allows the same part to serve body-control modules, sensor supplies, and post-buck point-of-load rails.
The TLS810A1 uses a bipolar pass-element architecture with internal bandgap reference and an error amplifier trimmed for tight line/load regulation. The combination of low IQ and a 42 V input enables direct connection to the unsuppressed vehicle bus while sustaining standby power budgets measured in single-digit microamps - critical for quiescent-current-sensitive ECUs and ISO 26262 functional-safety architectures.
Typical applications include automotive body electronics, ECU standby rails, sensor and actuator power supplies, HVAC controllers, gateway modules, and any 12 V/24 V board-net point-of-load requiring 3.3 V at up to 100 mA. It is also well-suited as a post-DCDC clean-up regulator downstream of a switching pre-regulator where low ripple on a 3.3 V logic rail is required.
A primary design consideration is power dissipation: at VIN=12 V, VOUT=3.3 V, IOUT=100 mA the part dissipates ~0.87 W, which the PG-TSON-10-2 EP can handle with adequate copper. Always size the input capacitor for the rated VIN ripple and place it close to the VIN pin to suppress transients.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 TLS810A1LDV33XUMA1 — 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： TLS810A1LDV33XUMA1 （相同外形與佔位） — 差異在於 Package, Output Voltage, Maximum Output Current, Input Voltage Range, RoHS Status.
TLS810A1LDV33XUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLS810A1LDV50XUMA1
✅ 直接替換📋 參考替代品（不在目錄中）
TLS810B1LDV33XUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLS810A1LD V33
✅ 直接替換📋 參考替代品（不在目錄中）
TLS805B1LDV33XUMA1
✅ 直接替換📋 參考替代品（不在目錄中）
TLS805B1LDV50XUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLS810A1LDV33XUMA1 最大額定值與電氣特性
| 輸出類型 | Fixed |
| 輸出電壓 | 3.3 V |
| 最大輸出電流 | 100 mA |
| 輸入電壓範圍 | 2.75 V to 42 V |
| Dropout Voltage (typ.) | 250 mV at 100 mA |
| Quiescent Current (typ.) | 5 uA |
| Supply Current (typ.) | 15 uA |
| Output Current Limit | Yes (integrated) |
| Overtemperature Shutdown | Yes (integrated) |
| 工作溫度 | -40C to +150C (junction, AEC-Q100 automotive) |
| 封裝 | PG-TSON-10-2 (10-pin TSON with exposed pad) |
| 安裝類型 | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| RoHS 狀態 | Compliant (green product) |
| Pb-Free Finish | Yes (per IPC/JEDEC J-STD-020) |
TLS810A1LDV33XUMA1 pg-tson-10-2 (10-pin tson with exposed pad) 腳位配置指南
TLS810A1LDV33XUMA1（pg-tson-10-2 (10-pin tson with exposed pad) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： TLS810A1LDV33XUMA1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLS810A1LDV33XUMA1 適用於 6 應用s: Automotive Body Control Module (BCM) MCU Rail, Automotive Sensor Power Supply (3.3 V rail), Post-DCDC Clean-Up LDO for 3.3 V Logic, 24 V Truck Board-Net Point-of-Load, Industrial 24 V Sensor / Actuator Power, Always-On Battery-Direct Standby Rail.
Automotive Body Control Module (BCM) MCU Rail
The TLS810A1LDV33XUMA1 supplies 3.3 V at up to 100 mA to body-control-module MCUs and CAN transceivers. Its 2.75-42 V VIN range covers 12 V cold-crank (down to ~3.55 V with 250 mV dropout at full load) and 24 V truck load-dump transients. The 5 uA quiescent current keeps BCM standby draw within OEM budgets, while AEC-Q100 qualification supports ISO 26262 functional-safety designs. Placed at the BCM power tree, it follows a pre-regulator or operates directly from the unsuppressed board-net with TVS protection upstream.
推薦
Automotive Sensor Power Supply (3.3 V rail)
The TLS810A1LDV33XUMA1 provides clean 3.3 V to analog sensors (pressure, position, temperature) in seat, chassis, and powertrain applications. The fixed 3.3 V factory trim eliminates feedback-resistor noise pickup that would otherwise degrade low-level sensor signal integrity. The 5 uA IQ supports always-on sensor modules that wake the ECU via LIN or CAN, and the integrated current limit and overtemperature shutdown protect against sensor short-circuits in harsh under-hood environments.
推薦
Post-DCDC Clean-Up LDO for 3.3 V Logic
The TLS810A1LDV33XUMA1 is well-suited as a post-buck clean-up regulator. Place it downstream of a wide-VIN switching pre-regulator (e.g., Infineon TLD5191 or TLx family) to reject switching ripple on the 3.3 V rail feeding DSPs, FPGAs, or microcontrollers. The LDO's PSRR suppresses the switching frequency ripple by 40-60 dB, while its 5 uA IQ adds negligible standby loss. Compared to filtering the switching node with bulky LC pi-filters, the LDO approach saves PCB area and provides tighter regulation.
推薦
24 V Truck Board-Net Point-of-Load
The TLS810A1LDV33XUMA1's 42 V upper VIN limit makes it directly applicable to 24 V commercial-vehicle board-nets, including heavy-truck and off-highway equipment. The fixed 3.3 V output supplies telematics control units and asset-tracking modules operating from 24 V battery rails with cold-crank excursions as low as 16 V. AEC-Q100 qualification covers the wide -40C to +150C junction-temperature range seen in cabin and chassis installations. The PG-TSON-10-2 EP package provides adequate thermal dissipation at 100 mA.
推薦
Industrial 24 V Sensor / Actuator Power
In industrial 24 V systems, the TLS810A1LDV33XUMA1 serves as a local 3.3 V point-of-load regulator for PLC analog input modules, low-power sensor nodes, and HMI displays. Its 42 V input withstands the 24 V industrial rail plus transient tolerance margins, and its AEC-Q100 heritage provides enhanced reliability margins beyond commercial-grade regulators. The fixed 3.3 V factory trim eliminates calibration drift in field-deployed industrial sensors, reducing commissioning and recalibration cost.
推薦
Always-On Battery-Direct Standby Rail
The TLS810A1LDV33XUMA1 connects directly to a 12 V automotive battery through a TVS and feeds always-on ECUs (keyless-entry, immobilizer, telematics) with 5 uA quiescent draw. The ultra-low IQ is critical for ISO 16750 and OEM-specific standby-current budgets measured in single-digit microamps. The wide 2.75-42 V input withstands jump-start and reverse-battery conditions, while integrated current limit and overtemperature protection guard against harness faults in parked-vehicle scenarios.
推薦
推薦產品摘要
工程參考資料，適用於 TLS810A1LDV33XUMA1 — 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 | TLS810A1LDV50XUMA1 | TLS810B1LDV33XUMA1 | TLS805B1LDV33XUMA1 | TLS805B1LDV50XUMA1 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSON-10-2 | PG-TSON-10-2 - same | PG-TSON-10-2 - same | PG-TSON-10-2 - same | PG-TSON-10-2 - same |
| Output Voltage | 3.3 V | 5.0 V | 3.3 V | 3.3 V | 5.0 V |
| Maximum Output Current | 100 mA | 100 mA | 100 mA | 50 mA (-50%) | 50 mA (-50%) |
| Input Voltage Range | 2.75 V to 42 V | 2.75 V to 42 V | 2.75 V to 42 V | 2.75 V to 42 V | 2.75 V to 42 V |
| Quiescent Current (typ.) | 5 uA | 5 uA | 5 uA | 5 uA | 5 uA |
| Dropout Voltage (typ. at full load) | 250 mV at 100 mA | 250 mV at 100 mA | 250 mV at 100 mA | 250 mV at 50 mA | 250 mV at 50 mA |
| AEC-Q100 Qualification | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- Ultra-low 5 uA quiescent current vs typical 30-100 uA in competing automotive LDOs (對比TLS805B1LDV33XUMA1 (5 uA, same family, lower IOUT))
- Wide 42 V input withstands 24 V load-dump without external clamping (對比TLS810A1LDV50XUMA1)
- PG-TSON-10-2 exposed-pad package provides low thermal resistance (對比TLS805B1LDV50XUMA1)
設計說明
Estimated: at VIN=12 V, VOUT=3.3 V, IOUT=100 mA, the part dissipates (12 - 3.3) x 0.1 = 0.87 W. The PG-TSON-10-2 EP package provides a low thermal resistance path via the exposed pad - it MUST be soldered to a continuous PCB copper pour of at least 50 mm^2 on inner/outer layers for rated performance. At VIN=24 V the dissipation rises to ~2.07 W, requiring additional copper area or airflow to keep junction temperature below 150 C.
Place the input capacitor (typ. 1-10 uF ceramic X7R, 50 V or higher rated) within 2 mm of the VIN pin to suppress transient ringing from the automotive harness. The exposed pad must be soldered to a copper pour with at least 5 thermal vias (0.3 mm drill) for heat transfer to inner ground planes. Route the VOUT trace with adequate copper width (>=0.5 mm per 100 mA) to minimize IR drop and preserve regulation accuracy at the load.
Do not exceed the absolute maximum VIN of 42 V without external TVS clamping - load-dump transients on 24 V systems can exceed this rating and destroy the IC. Verify that the ceramic input capacitor's voltage rating includes adequate derating (50% rule at maximum VIN). For parallel-output operation, do NOT parallel two TLS810A1 regulators - they lack active current sharing and one device will hog the load current, causing overtemperature shutdown.
合規資訊
Infineon green product per datasheet Rev. 1.0 (2016-08-23). RoHS-compliant with Pb-free finish suitable for Pb-free soldering per IPC/JEDEC J-STD-020. AEC-Q100 qualified for automotive. Halogen-free status not explicitly stated in provided web data - marked unknown.
