TLS810D1LDV50XUMA1 - 5V 100mA Automotive LDO | Infineon
MPN: TLS810D1LDV50XUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.31 | $655.00 |
| 1,000 | $1.16 | $1,160.00 |
TLS810D1LDV50XUMA1 Overview
An LDO (Low-Dropout) linear regulator is a class of linear voltage regulator that maintains a stable output even when the input voltage is only marginally higher than the output. Within the power management hierarchy, the LDO sits below switching regulators and above simple Zener/Zener-based references, providing a clean, low-noise rail at the cost of VIN-VOUT dropout power dissipation. Infineon's OPTIREG linear family specializes in low-Iq automotive regulators designed for cold-crank, stop-start, and 12 V/24 V body control applications.
Key differentiating features include an integrated reset delay function with adjustable timing, an active-high enable input for power sequencing, reverse polarity protection at the input, and an output current limit combined with overtemperature shutdown. The 55 dB PSRR at 100 Hz rejection reduces ripple coupling from upstream DC-DC converters, while the 1 uA quiescent current in OFF state preserves battery life in parked vehicles.
The TLS810D1LD V50 uses a PNP pass element architecture that delivers a 550 mV dropout at full 100 mA load, enabling the regulator to maintain a stable 5 V output during automotive cold-crank events when the battery voltage drops as low as 6 V. The reset circuit monitors VOUT and asserts a reset signal to a host microcontroller if the output falls below the regulation threshold.
Typical applications include automotive body control modules, sensor power supplies, microcontroller power rails in BCM and gateway ECUs, and industrial 24 V bus sensor nodes. The wide 42 V input tolerance also supports 24 V truck and agricultural machinery power systems without additional protection components.
When designing with this part, ensure COUT ESR stays within the stability region specified in the datasheet, and account for thermal dissipation: at 12 V to 5 V and 100 mA, the regulator dissipates 700 mW. The PG-TSON-10 exposed pad must be soldered to a copper pour of at least 50 mm squared to keep the junction temperature within the 150 C Tj limit.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for parametric data, supply-chain options, and cross-brand equivalents for the TLS810D1LD V50.
Drop-in alternatives for TLS810D1LDV50XUMA1 — 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 TLS810D1LDV50XUMA1 (same form factor and footprint) — differing in Package, Dropout Voltage, Operating Temperature Range, Output Voltage Accuracy, Input Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLS810B1LDV50XUMA1
✅ Drop-In✓ In Stock
$0.34 / Unit
View Datasheet →TLS805D1LDV50XUMA1
✅ Drop-In📋 Reference alternative (not in catalog)
TLS805B1LDV50XUMA1
✅ Drop-In✓ In Stock
$0.3 / Unit
View Datasheet →TLE42744EV50XUMA1
✅ Drop-In✓ In Stock
$0.99 / Unit
View Datasheet →TLS810D1LDV50XUMA1 Maximum Ratings & Electrical Characteristics
| Topology | Linear Voltage Regulator (LDO) |
| Output Type | Fixed 5 V |
| Input Voltage Range | 2.75 V to 42 V |
| Output Current (max) | 100 mA |
| Dropout Voltage | 550 mV at 100 mA (typical) |
| Quiescent Current (Iq, ON) | 9 uA (typical) |
| Quiescent Current (Iq, OFF) | 1 uA (typical) |
| PSRR | 55 dB at 100 Hz |
| Reset Delay Function | Yes (adjustable) |
| Enable Input | Yes (active-high) |
| Reverse Polarity Protection | Yes |
| Over-Current Protection | Yes |
| Thermal Shutdown | Yes |
| ESD Protection | Yes |
| Over-Voltage Protection | Yes |
| Operating Junction Temperature | -40 C to +150 C |
| Package | PG-TSON-10 (3.3 x 3.3 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
TLS810D1LDV50XUMA1 Pin Configuration
| Pin 1 | IN — Input voltage supply |
| Pin 2 | EN — Enable input (active-high) |
| Pin 3 | DLY — Reset delay timing capacitor |
| Pin 4 | GND — Ground |
| Pin 5 | NC — Not connected |
| Pin 6 | RESET — Reset output (open-drain) |
| Pin 7 | NC — Not connected |
| Pin 8 | OUT — Regulated 5V output |
| Pin 9 | OUT — Regulated 5V output |
| Pin 10 | EP — Exposed thermal pad (connect to GND) |
Typical Applications
TLS810D1LDV50XUMA1 is suitable for 7 applications: Automotive Body Control Module (BCM) 5V Rail, Automotive Sensor Power Supply, Industrial 24V Bus Sensor Nodes, Always-On CAN/LIN Transceiver Supply, Battery Management System (BMS) Auxiliary Rail, HVAC Control Module Microcontroller Supply, Truck and Agricultural ECU Power.
Automotive Body Control Module (BCM) 5V Rail
The TLS810D1LDV50XUMA1 supplies the 5V rail for body control modules that manage lighting, wipers, and door locks. Its 2.75V-42V input range handles cold-crank to load-dump on the 12V bus, while 9 uA Iq preserves battery life when the vehicle is parked. The integrated reset output feeds the BCM microcontroller, ensuring orderly startup and brownout recovery in stop-start vehicles.
Recommended
Automotive Sensor Power Supply
Hall-effect, pressure, and position sensors in engine and chassis ECUs draw 10-50 mA from a clean 5V rail. The TLS810D1LDV50XUMA1's 55 dB PSRR at 100 Hz rejects switching noise from upstream DC-DC converters, while its 1 uA OFF Iq lets sensors sleep without draining the battery. The wide 42V input tolerates inductive transients on long sensor harnesses.
Recommended
Industrial 24V Bus Sensor Nodes
Industrial sensor nodes powered from 24V truck, agricultural, or factory bus systems benefit from the TLS810D1LDV50XUMA1's 42V maximum input rating, eliminating the need for external TVS clamps. The exposed PG-TSON-10 pad dissipates up to 1W at 24V-to-5V/100 mA without thermal shutdown, and the adjustable reset delay ensures deterministic MCU startup in noisy motor-control environments.
Recommended
Always-On CAN/LIN Transceiver Supply
CAN and LIN transceivers in keyless-entry and telematics modules require a permanent 5V supply even when the vehicle is parked. The TLS810D1LDV50XUMA1's 9 uA quiescent current draws less than 1 mAh per day from a 100 Ah automotive battery, while its reverse-polarity and over-voltage protection guard against jump-start miswiring and load-dump events.
Recommended
Battery Management System (BMS) Auxiliary Rail
In 12V/48V battery management systems, the TLS810D1LDV50XUMA1 provides a low-noise 5V rail for cell-monitoring ADC front ends and isolated communication interfaces. Its low 1 uA OFF-state Iq supports shipping-mode storage requirements, while the integrated reset signal latches fault conditions to the host BMS controller.
Recommended
HVAC Control Module Microcontroller Supply
Automotive HVAC head units require a stable 5V rail for the main microcontroller and display drivers. The TLS810D1LDV50XUMA1's 550 mV dropout maintains regulation during engine cranking, preventing display flicker and touch-controller resets. The exposed-pad TSON-10 package handles the 700 mW dissipation at typical 12V battery input without requiring a heatsink.
Recommended
Truck and Agricultural ECU Power
Commercial trucks and agricultural machinery operate on 24V nominal buses with transients up to 100V during load-dump. The TLS810D1LDV50XUMA1's 42V continuous input rating handles the steady-state 24V bus directly, while internal over-voltage protection clamps inductive spikes. The PG-TSON-10 package is qualified to 150 C Tj for under-hood installations.
Recommended
Recommended Products Summary
Engineering reference data for TLS810D1LDV50XUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLS810B1LDV50XUMA1 | TLS805D1LDV50XUMA1 | TLS805B1LDV50XUMA1 | TLE42744EV50XUMA1 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSON-10 | PG-TSON-10 - same | PG-TSON-10 - same | PG-TSON-10 - same | PG-TSON-10 - same |
| Output Voltage | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed |
| Output Current (max) | 100 mA | 100 mA | 100 mA | 100 mA | 450 mA |
| 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 | 5.5 V to 42 V |
| Quiescent Current | 9 uA | 9 uA | 9 uA | 9 uA | 100 uA |
| Reset Delay Function | Yes (adjustable) | Yes (adjustable) | No | No | Yes |
Key Differentiators
- Integrated reset delay circuit eliminates external reset IC (vs TLS805D1LDV50XUMA1)
- Ultra-low quiescent current extends battery life in always-on applications (vs TLE42744EV50XUMA1)
- Lower minimum input voltage supports cold-crank operation (vs TLE42744EV50XUMA1)
Design Notes
At VIN=12V, VOUT=5V, and 100 mA continuous load, the TLS810D1LDV50XUMA1 dissipates approximately 700 mW. With the PG-TSON-10 exposed-pad package and a minimum 50 mm squared of copper pour on a 2-layer 1 oz board, the junction-to-ambient thermal resistance theta_JA is approximately 50 C/W, yielding a junction temperature rise of 35 C above a 25 C ambient - well within the 150 C Tj limit. Estimated: input values used are VIN=12V, VOUT=5V, IOUT=100 mA, 1 oz copper 50 mm^2 pour on 2-layer FR-4.
Place the 1 uF minimum output capacitor as close as possible to the OUT pin and PG-TSON-10 exposed pad to minimize parasitic inductance. Use an X7R or X5R ceramic with low ESR (under 100 mOhm) to ensure regulator stability across the full operating temperature range. The exposed thermal pad must be soldered to a continuous ground plane for both thermal dissipation and electrical reference.
Do not leave the EN pin floating - tie it to IN through a 100 kOhm resistor or drive it directly from a microcontroller GPIO, otherwise the regulator state is undefined at startup. The DLY reset-delay capacitor sets the reset pulse width (typ. 1 ms per nF); omitting this capacitor disables the reset delay function. The output current limit kicks in around 150 mA, so driving loads above 100 mA will trigger foldback current limiting.
Although the TLS810D1LDV50XUMA1 is rated for 42 V continuous input, automotive load-dump transients can exceed 80 V. Add a 36 V TVS clamp (e.g., SMBJ36A) on the IN pin to protect the regulator from voltage transients during alternator disconnect events. The regulator's internal over-voltage protection provides backup but is not designed for repeated transient stress.
Compliance Information
RoHS compliant per JLCPCB and Infineon product page. AEC-Q100 qualified for automotive applications - exact grade in datasheet. Halogen-free per Infineon OPTIREG linear family datasheet.
