TLS810A1LDV33XUMA1 - 100mA, 3.3V Automotive LDO | Infineon
MPN: TLS810A1LDV33XUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.18 | $1.18 |
| 10 | $1.06 | $10.60 |
| 100 | $0.94 | $94.00 |
| 500 | $0.84 | $420.00 |
| 1,000 | $0.75 | $750.00 |
| 2,500 | $0.68 | $1,700.00 |
TLS810A1LDV33XUMA1 Overview
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.
Drop-in alternatives for TLS810A1LDV33XUMA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLS810A1LDV33XUMA1 (same form factor and footprint) β differing in Output Voltage, Package, Maximum Output Current, Dropout Voltage, Output Current Limit.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLS810A1LDV33XUMA1
β Drop-Inβ In Stock
$0.68 / Unit
View Datasheet βTLS810A1LDV50XUMA1
β Drop-Inπ Reference alternative (not in catalog)
TLS810B1LDV33XUMA1
β Drop-Inβ In Stock
$0.52 / Unit
View Datasheet βTLS810A1LD V33
β Drop-Inπ Reference alternative (not in catalog)
TLS805B1LDV33XUMA1
β Drop-Inπ Reference alternative (not in catalog)
TLS805B1LDV50XUMA1
β Drop-Inβ In Stock
$0.3 / Unit
View Datasheet βTLS810A1LDV33XUMA1 Maximum Ratings & Electrical Characteristics
| Output Type | Fixed |
| Output Voltage | 3.3 V |
| Maximum Output Current | 100 mA |
| Input Voltage Range | 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) |
| Operating Temperature | -40C to +150C (junction, AEC-Q100 automotive) |
| Package | PG-TSON-10-2 (10-pin TSON with exposed pad) |
| Mounting Type | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| RoHS Status | Compliant (green product) |
| Pb-Free Finish | Yes (per IPC/JEDEC J-STD-020) |
TLS810A1LDV33XUMA1 pg-tson-10-2 (10-pin tson with exposed pad) Pin Configuration Guide
Pin configuration for TLS810A1LDV33XUMA1 (pg-tson-10-2 (10-pin tson with exposed pad) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TLS810A1LDV33XUMA1.
Refer to the datasheet for full pin configuration.
Typical Applications
TLS810A1LDV33XUMA1 is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for TLS810A1LDV33XUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Ultra-low 5 uA quiescent current vs typical 30-100 uA in competing automotive LDOs (vs TLS805B1LDV33XUMA1 (5 uA, same family, lower IOUT))
- Wide 42 V input withstands 24 V load-dump without external clamping (vs TLS810A1LDV50XUMA1)
- PG-TSON-10-2 exposed-pad package provides low thermal resistance (vs TLS805B1LDV50XUMA1)
Design Notes
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.
Compliance Information
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.
