TLS205B0LDV50XUMA1 - 500mA 5V LDO Regulator | Infineon
MPN: TLS205B0LDV50XUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.34 | $134.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.86 | $860.00 |
| 2,500 | $0.71 | $1,775.00 |
TLS205B0LDV50XUMA1 Overview
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output rail. Within the broader power-management hierarchy, this device sits as a linear regulator under the voltage-regulator category of power management ICs (PMICs). LDOs are valued for their simplicity, low noise, fast transient response, and absence of switching EMI, in contrast to DC-DC switching converters which require inductors and generate ripple.
Key features include a low quiescent current of 60 µA, integrated protection functions such as thermal shutdown and overcurrent limiting, and a low-noise reference that supports sensitive analog rails. The device is AEC-Q100 qualified for automotive applications, and the PG-TSON-10-2 package with exposed pad provides a thermal resistance conducive to sustained 500 mA output in compact layouts.
Internally, the regulator uses a PNP pass element architecture with a precision bandgap reference and error amplifier, providing tight line and load regulation. Stability is achieved with small ceramic output capacitors, simplifying BOM and reducing PCB area. The wide 5.5 V to 20 V input range makes the part tolerant of automotive load-dump transients when fed through appropriate upstream protection.
Typical applications include automotive infotainment and body-electronics modules, sensor supplies, microcontroller post-regulation, and industrial 12 V / 24 V systems requiring a quiet 5 V rail. The fixed 5 V output eliminates external feedback components and reduces design risk for production volumes.
When designing with this part, ensure the input capacitor is placed close to the IC and that the exposed pad is soldered to a sufficient copper pour for thermal dissipation. Because dropout rises to 480 mV at 500 mA, verify headroom across worst-case VIN under all operating conditions, including cold-crank on automotive rails.
This page synthesizes distributor pricing, drop-in alternatives in the same PG-TSON-10-2 footprint, and practical thermal/design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for TLS205B0LDV50XUMA1 — 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 TLS205B0LDV50XUMA1 (same form factor and footprint) — differing in Package, Protection Features, Input Voltage Range, Maximum Output Current, Output Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLS205B0LDV33XUMA1
✅ Drop-In📋 Reference alternative (not in catalog)
TLS205B0LDV25XUMA1
✅ Drop-In📋 Reference alternative (not in catalog)
TLE42744DV50ATMA1
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →TLS805B1SJVXUMA1
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →TLS115D0LDXUMA1
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →TLE42644GHTMA1
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →TLS205B0LDV50XUMA1 Maximum Ratings & Electrical Characteristics
| Regulator Type | LDO (Low-Dropout), Positive Fixed |
| Output Voltage | 5.0 V (fixed) |
| Output Current (Maximum) | 500 mA |
| Input Voltage Range | 5.5 V to 20 V |
| Dropout Voltage (Typical) | 350 mV at 500 mA |
| Dropout Voltage (Maximum) | 480 mV at 500 mA |
| Quiescent Current (Typical) | 60 µA |
| Number of Outputs | 1 |
| Output Type | Fixed |
| Operating Temperature Range | -40 °C to +125 °C |
| Package | PG-TSON-10-2 |
| Mounting Style | SMD/SMT |
| Output Capacitor Requirement | Ceramic, low-ESR |
| Protection Features | Thermal Shutdown, Overcurrent Limit |
| AEC-Q100 | Qualified (automotive grade) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
TLS205B0LDV50XUMA1 Pin Configuration
| Pin 1 | VIN — Input supply voltage |
| Pin 2 | VIN — Input supply voltage (tied to pin 1) |
| Pin 3 | GND — Ground |
| Pin 4 | GND — Ground |
| Pin 5 | GND — Ground |
| Pin 6 | GND — Ground |
| Pin 7 | GND — Ground |
| Pin 8 | VOUT — Regulated output voltage (5.0 V) |
| Pin 9 | VOUT — Regulated output voltage (tied to pin 8) |
| Pin 10 | VOUT — Regulated output voltage (tied to pin 8) |
| Pin EP | EPAD — Exposed thermal pad — connect to GND plane for thermal dissipation |
Typical Applications
TLS205B0LDV50XUMA1 is suitable for 6 applications: Automotive Body Electronics 5 V Rail, Sensor Power Supply (Industrial 24 V Bus), Microcontroller Post-Regulation, Infotainment System 5 V Supply, Battery-Powered Always-On Standby Rail, Industrial PLC Digital Input Module.
Automotive Body Electronics 5 V Rail
The TLS205B0LDV50XUMA1's 5.5 V to 20 V input range and AEC-Q100 qualification make it an ideal post-regulator for body-control modules drawing 5 V sensor or relay-driver rails from a 12 V automotive bus. The 350 mV typical dropout at 500 mA leaves margin for cold-crank transients down to ~5.5 V at the input. Compared with a switching DC-DC, the LDO adds zero switching noise to the 5 V rail that feeds Hall-effect sensors and small-signal analog conditioning amplifiers. Place the IC directly after reverse-battery and load-dump protection, with a 1 µF X7R ceramic input cap and 1 µF to 10 µF ceramic output cap within 5 mm of the VOUT pin.
Recommended
Sensor Power Supply (Industrial 24 V Bus)
Industrial sensor modules running off a 24 V bus benefit from the TLS205B0LDV50XUMA1's micropower 60 µA quiescent current and 5 V fixed output. The 20 V maximum input is below typical 24 V transients, so the part should be preceded by a TVS clamp or upstream preregulator; in clean 24 V systems it operates directly. Its low noise floor (no switching ripple by definition of LDO architecture) preserves the integrity of precision analog front-ends such as strain-gauge or RTD conditioning stages. The PG-TSON-10-2 package with exposed pad enables compact DIN-rail module layouts where board area is at a premium.
Recommended
Microcontroller Post-Regulation
Use the TLS205B0LDV50XUMA1 as the final 5 V post-regulator downstream of a buck converter to remove switching ripple before it reaches a noise-sensitive 5 V microcontroller or CAN transceiver. The 500 mA output easily covers MCU core, analog, and IO current plus headroom for transient in-rush, while the 60 µA quiescent supports low-power standby modes where the MCU is the only active load. Place this LDO between the 12 V or 24 V bus and the MCU's VDD pin with a ferrite bead upstream for additional conducted-noise filtering. Compared with feeding the MCU from a noisy switcher directly, the LDO output provides a clean rail that prevents CAN bus error frames from supply-coupled noise.
Recommended
Infotainment System 5 V Supply
Automotive infotainment head units require a quiet 5 V rail to power audio codecs, USB charging controllers, and display backlight drivers. The TLS205B0LDV50XUMA1's low-noise LDO architecture and 500 mA output capacity supply these blocks without injecting switch-mode ripple that would degrade audio DAC THD+N performance. The AEC-Q100 grade and wide input tolerance handle crank and load-dump events typical in passenger-vehicle electrical systems. Solder the exposed thermal pad to a minimum 25 mm² copper pour so the junction temperature stays within derating limits at sustained 500 mA load during high-volume audio playback.
Recommended
Battery-Powered Always-On Standby Rail
For always-on automotive domains such as key-fob receivers, immobilizers, and BCM wake-up logic, the TLS205B0LDV50XUMA1's 60 µA quiescent current minimizes battery drain during key-off park periods lasting weeks. The fixed 5 V output powers a small MCU and HF receiver without requiring additional regulation. The 5.5 V minimum input ensures proper dropout behavior even at depressed 12 V battery voltages, while the 20 V maximum tolerates jump-start transients from a booster pack. Designers should verify cold-start behavior at -40 °C and low battery (8 V) input to confirm regulation through the worst-case automotive voltage profile.
Recommended
Industrial PLC Digital Input Module
PLC digital-input modules often derive a 5 V logic rail from a 24 V field supply to drive optocouplers and threshold detectors. The TLS205B0LDV50XUMA1's 20 V input ceiling is below a raw 24 V industrial bus, so it must be preceded by a 24 V preregulator or TVS-protected front-end. Once inside its input window, the LDO provides a stable 5 V with 500 mA capacity sufficient for several optocoupler LEDs in parallel. Its integrated thermal shutdown prevents failure in fault conditions such as output shorts to ground on the field wiring side. The PG-TSON-10-2 package with proper copper pour enables reliable operation across the -40 °C to +125 °C industrial temperature range.
Recommended
Recommended Products Summary
Engineering reference data for TLS205B0LDV50XUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLS205B0LDV33XUMA1 | TLS205B0LDV25XUMA1 | TLE42744DV50ATMA1 | TLS805B1SJVXUMA1 | TLE42644GHTMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSON-10-2 | PG-TSON-10-2 | PG-TSON-10-2 | PG-TSON-10-2 | PG-TSON-10-2 | PG-TSON-10-2 |
| Output Voltage | 5.0 V fixed | 3.3 V fixed | 2.5 V fixed | 5.0 V fixed | 5.0 V fixed | 5.0 V fixed |
| Maximum Output Current | 500 mA | 500 mA | 500 mA | 500 mA | 500 mA | 500 mA |
| Input Voltage Range | 5.5 V to 20 V | 5.5 V to 20 V | 5.5 V to 20 V | 5.5 V to 40 V | 5.5 V to 42 V | 5.5 V to 45 V |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Micropower 60 µA quiescent current for always-on standby domains (vs TLE42644GHTMA1)
- 20 V input tolerance matched to nominal 12 V automotive rail (vs TLS805B1SJVXUMA1)
- Exact 5.0 V fixed output eliminates external feedback resistors (vs TLS835B2ELVSEXUMA1)
Design Notes
Estimated: at VIN = 12 V, VOUT = 5 V, IOUT = 500 mA, power dissipation = (12 − 5) × 0.5 = 3.5 W. With the PG-TSON-10-2 exposed-pad package on a JEDEC EIA/JESD51 1-oz 4-layer PCB (θJA ≈ 50 °C/W, [DATA_NEEDED: confirm exact θJA from datasheet]), the junction temperature rise is roughly 175 °C above ambient — exceeding the 125 °C limit. The exposed pad MUST be soldered to a continuous GND copper pour of at least 25 mm² on the top layer plus thermal vias to inner planes to reduce θJA toward 35 °C/W. For continuous 500 mA load at high VIN, derate by lowering VIN to 7 V max or by placing the LDO downstream of a switching preregulator.
Place the input capacitor (≥ 1 µF X7R ceramic) within 2 mm of the VIN pin and the output capacitor (1 µF to 10 µF X7R, low-ESR) within 5 mm of the VOUT pin. Wide, short traces on VIN, VOUT, and GND reduce parasitic inductance that could otherwise couple noise into the LDO feedback loop. The exposed pad should use an array of thermal vias — typically 9 to 16 vias on a 0.3 mm pitch — connecting to an inner GND plane to pull heat away from the die. Avoid routing digital signal traces beneath the LDO to prevent ground-bounce coupling into the analog output rail.
Do not exceed the 20 V absolute maximum input — automotive load-dump transients can reach 35 V on a 12 V system and require an upstream TVS clamp (e.g., SMBJ series) or preregulator. Do not operate with VIN below 5.5 V at full 500 mA load or the part will drop out of regulation and the output will sag toward VIN minus the dropout. Verify ceramic capacitor voltage rating accounts for DC bias derating — a 6.3 V-rated X7R may lose 50% capacitance at 5 V bias. Always check the latest datasheet pinout figure; pinout revisions between OPTIREG family variants can differ in NC pin assignments.
Compliance Information
AEC-Q100 automotive qualified per Infineon OPTIREG Linear datasheet. RoHS and lead-free confirmed by distributor listings. Conflict-minerals declaration available via Infineon compliance portal.
