TLS810B1LDV50XUMA1 - 5V 100mA Ultra-Low Iq LDO | Infineon
MPN: TLS810B1LDV50XUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.84 | $0.84 |
| 10 | $0.76 | $7.60 |
| 100 | $0.62 | $62.00 |
| 500 | $0.51 | $255.00 |
| 1,000 | $0.43 | $430.00 |
| 3,000 | $0.34 | $1,020.00 |
TLS810B1LDV50XUMA1 Overview
An LDO (Low-Dropout) linear regulator is a member of the linear regulator family that maintains a stable output voltage when the input voltage approaches the output voltage. Within the broader taxonomy, an LDO is a sub-class of linear regulator, which itself is a sub-class of voltage regulator, which belongs to the power management integrated circuit category. Infineon's OPTIREG LINEAR family of LDO regulators targets always-on, battery-tolerant applications where quiescent current directly determines standby energy budget. The TLS810B1 is part of this OPTIREG LINEAR family, specifically optimized for automotive quiescent-sensitive loads such as body controllers, CAN transceivers and sensor nodes.
Key features include a 5.5 µA typical quiescent current at light load, 100 mA continuous output current, and an enable input for power sequencing. Internal protection circuitry includes thermal shutdown, output current limiting, and reverse-polarity protection, making the device robust against typical automotive fault conditions. The wide 42 V transient input rating enables survival of load-dump pulses on 12 V automotive buses without external TVS clamps.
Technically, the TLS810B1 uses a PNP pass architecture, which delivers inherently low dropout voltage and predictable line/load regulation across the entire input voltage range. The output stage is fully protected against 45 V load-dump transients, and the internal reference achieves ±2 % output voltage accuracy over the full -40°C to +150°C automotive Grade 1 junction temperature range. The TSON-10 package exposes a thermal pad that directly couples the die to PCB copper, supporting 100 mA continuous operation at elevated ambient temperatures.
Typical applications include automotive body electronics (always-on ECU rails after ignition-off), CAN/LIN transceiver supply, interior lighting controllers, HVAC sensors, and industrial 24 V bus interfaces where low standby current extends battery life. The TSON-10 footprint also simplifies layout in space-constrained modules.
A primary design consideration is decoupling: place a 1 µF X7R ceramic input capacitor and a 1 µF X7R output capacitor within 1 mm of the device pins to ensure regulator stability and to suppress input-voltage transients. Avoid operating continuously at VIN > 36 V at full load; the 42 V rating is for transient survival rather than steady-state operation.
This page consolidates distributor pricing, verified drop-in alternatives and application notes to accelerate TLS810B1LDV50XUMA1 selection, sourcing and PCB design.
Drop-in alternatives for TLS810B1LDV50XUMA1 — 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 TLS810B1LDV50XUMA1 (same form factor and footprint) — differing in Package, Protection Features, Operating Temperature Range, Input Voltage Range, Regulator Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLS810B1LDV33XUMA1
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →TLS810B1EJV50XUMA1
✅ Drop-In📋 Reference alternative (not in catalog)
TLS805B1SJVXUMA1
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →TLS205B0LDV50XUMA1
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →TLE42744EV50XUMA1
✅ Drop-In✓ In Stock
$0.99 / Unit
View Datasheet →TLS810B1LDV50XUMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | OPTIREG LINEAR |
| Regulator Type | LDO (Low-Dropout) Linear Regulator, Fixed Output |
| Output Voltage | 5.0 V (fixed) |
| Output Voltage Accuracy | ±2 % (typ) |
| Input Voltage Range | 2.75 V to 42 V |
| Maximum Continuous Output Current | 100 mA |
| Dropout Voltage | 200 mV (typ at 100 mA) |
| Quiescent Current (Iq) | 5.5 µA (typ) |
| Operating Temperature Range | -40 °C to +150 °C (Tj, automotive Grade 1) |
| Package | PG-TSON-10 (3.3 mm × 3.3 mm leadless) |
| Mounting Type | Surface Mount |
| Protection Features | Thermal shutdown, current limit, reverse polarity |
| Load Dump Tolerance | 45 V transient per ISO 7637 |
| RoHS Status | Compliant |
| Automotive Qualification | AEC-Q100 Grade 1 |
TLS810B1LDV50XUMA1 Pin Configuration
| Pin 1 | IN — Input voltage (2.75 V to 42 V) |
| Pin 2 | IN — Input voltage (tied to pin 1) |
| Pin 3 | EN — Enable input (active-high) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | GND — Ground |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | ADJ/FB — Reserved / fixed-version trim pin (do not load) |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | OUT — Regulated 5.0 V output |
| Pin 10 | OUT — Regulated 5.0 V output (tied to pin 9) |
| Pin 11 | DAP — Exposed thermal pad - tie to GND for heatsinking |
Typical Applications
TLS810B1LDV50XUMA1 is suitable for 6 applications: Automotive Always-On ECU Rail, CAN/LIN Transceiver Supply, Industrial 24 V Sensor Node Power, Body Electronics Interior Lighting, HVAC Sensor Module, Battery-Backed IoT / Smart Sensor.
Automotive Always-On ECU Rail
The TLS810B1LDV50XUMA1 powers body and chassis ECUs that remain active after ignition-off. Its 5.5 µA quiescent current keeps standby drain below the typical 100 µA budget allocated for parasitic loads, while the 42 V input range covers 12 V and 24 V battery systems with load-dump headroom. With 100 mA continuous output and AEC-Q100 Grade 1 qualification, the regulator delivers clean power to microcontroller wake-up circuits, watchdog timers and CAN transceivers that must remain responsive during parking. The TSON-10 footprint fits body-control modules where PCB area is constrained.
Recommended
CAN/LIN Transceiver Supply
CAN and LIN transceivers require a clean 5 V rail during vehicle sleep for wake-up frame detection. The TLS810B1LDV50XUMA1 supplies this rail with 5.5 µA Iq so the bus can remain list active without draining the battery. Its 2.75 V minimum input covers deeply discharged 12 V batteries after extended parking, while the 200 mV dropout at 100 mA keeps the rail in regulation during cold-crank dips. AEC-Q100 Grade 1 qualification and reverse-polarity protection make the regulator automotive-robust for chassis-mounted transceivers.
Recommended
Industrial 24 V Sensor Node Power
Industrial 24 V sensor nodes require a 5 V rail with sub-10 µA standby to extend battery life in remote or wireless installations. The TLS810B1LDV50XUMA1 delivers 100 mA at 5.0 V from a 24 V bus while consuming only 5.5 µA at no load. Its 42 V transient input rating handles inductive switching on the bus, and the TSON-10 package simplifies integration into compact sensor modules. The low Iq also enables longer battery intervals for field-deployed IIoT nodes in factory-automation cabinets.
Recommended
Body Electronics Interior Lighting
Interior LED lighting controllers need a clean standby rail that survives automotive transients. The TLS810B1LDV50XUMA1 supplies the microcontroller and logic-side of lighting modules with 5.0 V at 100 mA, while its 42 V input withstands load-dump events. The 5.5 µA Iq allows the controller to remain in low-power mode with the LED driver disabled, and AEC-Q100 Grade 1 qualification supports deployment behind headlights and door modules where ambient temperature can reach 125 °C. Reverse-polarity protection prevents field failures during battery service.
Recommended
HVAC Sensor Module
HVAC sensor modules rely on a quiet, low-Iq 5 V rail to bias pressure and temperature sensors that must remain active with the climate-control bus. The TLS810B1LDV50XUMA1 supplies this rail with 5.5 µA standby, allowing weeks of parking without battery depletion. Its 100 mA output supports both analog sensors and the local microcontroller, while the wide 2.75 V to 42 V input covers 12 V battery dips during cranking and 24 V truck systems. AEC-Q100 qualification supports the in-cabin thermal environment.
Recommended
Battery-Backed IoT / Smart Sensor
Battery-backed IoT sensors need an LDO with very low quiescent current to extend service life on a single primary cell. The TLS810B1LDV50XUMA1 provides 5.0 V at 100 mA from a wide 2.75 V to 42 V source, with only 5.5 µA Iq - well below the typical coin-cell leakage budget. Its low dropout of 200 mV at 100 mA allows the rail to stay in regulation as the cell voltage falls. The TSON-10 footprint suits compact sensor modules, and the Infineon OPTIREG LINEAR family pedigree provides AEC-Q100 robustness for industrial-grade deployments.
Recommended
Recommended Products Summary
Engineering reference data for TLS810B1LDV50XUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLS810B1LDV33XUMA1 | TLS810B1EJV50XUMA1 | TLS805B1SJVXUMA1 | TLS205B0LDV50XUMA1 | TLE42744EV50XUMA1 |
|---|---|---|---|---|---|---|
| Package | PG-TSON-10 (3.3 × 3.3 mm) | PG-TSON-10 - same | PG-TSON-10 - same | PG-TSON-10 - same | PG-TSON-10 - same | PG-TSON-10 - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Output Voltage | 5.0 V | 3.3 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| AEC-Q100 Grade | Grade 1 | Grade 1 | Grade 1 | Grade 1 | Grade 1 (Infineon OPTIREG family) | Grade 1 |
| Approx. qty-1 Price (USD, 2026-09-14) | 0.84 | Similar Infineon OPTIREG band | Similar Infineon OPTIREG band | Similar Infineon OPTIREG band | Similar Infineon OPTIREG band | Similar Infineon OPTIREG band |
Key Differentiators
- Ultra-low 5.5 µA quiescent current for always-on automotive rails (vs TLE42744EV50XUMA1)
- 42 V continuous / 45 V load-dump input tolerance in TSON-10 (vs TLS810B1EJV50XUMA1)
- AEC-Q100 Grade 1 with 100 mA continuous output (vs TLS805B1SJVXUMA1)
Design Notes
Place a 1 µF X7R ceramic input capacitor and a 1 µF X7R ceramic output capacitor within 1 mm of the TLS810B1LDV50XUMA1 pins. The TSON-10 exposed thermal pad (pin 11 / DAP) MUST be soldered to a continuous GND copper pour of at least 50 mm² to dissipate the 700 mW worst-case load (VIN=12 V, VOUT=5 V, 100 mA). Without proper thermal pad soldering, the device may enter thermal shutdown prematurely at high ambient temperature.
Estimated: at VIN=24 V, VOUT=5 V, 100 mA load, the TLS810B1LDV50XUMA1 dissipates (24 V - 5 V) × 0.1 A = 1.9 W. With a properly soldered thermal pad on 50 mm² of 1 oz copper (theta_JA ~ 80 °C/W), the junction temperature rise above ambient is roughly 1.9 W × 80 °C/W ≈ 152 °C, exceeding the 150 °C Tj limit. Either reduce VIN (use a pre-regulator) or increase the copper pour (200 mm²) before operating continuously at 100 mA from 24 V buses.
Do not exceed the 42 V absolute-maximum input rating of the TLS810B1LDV50XUMA1, even transiently beyond the 45 V load-dump tolerance window. Do not place large capacitance (>22 µF) directly on the output unless datasheet ESR stability is verified - PNP-architecture LDOs can be sensitive to output-capacitor ESR. Always enable the device through its EN pin with a clean logic signal; leaving EN floating can cause unpredictable startup. Verify pin 4 / pin 6 / pin 8 (NC pins) per the datasheet before committing the PCB.
Compliance Information
AEC-Q100 Grade 1 qualified per Infineon OPTIREG LINEAR TLS810/TLS805 product brief. RoHS compliant. Lead-free and halogen-free per Infineon product pages.
