TLS805B1LDV50XUMA1 - 50mA, 42V LDO Regulator 5V Fixed | Infineon
MPN: TLS805B1LDV50XUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.74 | $0.74 |
| 10 | $0.67 | $6.70 |
| 100 | $0.55 | $55.00 |
| 500 | $0.46 | $230.00 |
| 1,000 | $0.38 | $380.00 |
| 3,000 | $0.3 | $900.00 |
Drop-in alternatives for TLS805B1LDV50XUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLS805B1LDV33XUMA1
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TLS805B1LDVXUMA1
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TLS805B1LDV50ATMA1
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
TLS810B1LDV50XUMA1
✅ Drop-In📋 Reference alternative (not in catalog)
TLS805B1LDV50XUMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | OPTIREG linear TLS805 |
| Regulator Type | LDO (Low-Dropout) Linear Regulator, Positive Fixed |
| Output Voltage | 5.0 V (fixed) |
| Output Voltage Accuracy | ±2 % |
| Input Voltage Range | 2.75 V to 42 V |
| Maximum Output Current | 50 mA |
| Dropout Voltage | 100 mV typical @ 50 mA |
| Quiescent Current (Iq) | 5.5 µA typical |
| Off-Mode Current | < 1 µA |
| Output Current Limit | Integrated |
| Thermal Shutdown | Integrated |
| Enable Pin | Yes |
| Operating Temperature Range | -40 °C to +150 °C junction |
| Package | PG-TSON-10 (exposed pad) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level | MSL 2 (per JEDEC J-STD-020) |
| RoHS Compliance | RoHS-compliant (green product, Pb-free) |
TLS805B1LDV50XUMA1 pg-tson-10 (exposed pad) Pin Configuration Guide
Complete pinout information for TLS805B1LDV50XUMA1 (pg-tson-10 (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 TLS805B1LDV50XUMA1.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TLS805B1LDV50XUMA1 is suitable for 6 applications: Automotive Body and Chassis ECU Always-On Supply, Industrial Sensor and Transmitter Supply, IoT Battery-Powered Node Standby Rail, CAN/LIN Transceiver Power Supply, Microcontroller Standby Voltage Rail, LED Indicator and Backlight Driver Supply.
Automotive Body and Chassis ECU Always-On Supply
The TLS805B1LDV50XUMA1 is a strong fit for always-on body and chassis ECUs (door modules, seat controllers, BCMs) that draw a few mA standby current and must survive 12 V cold-crank and load-dump transients. Its 5.5 µA quiescent current keeps the battery drain negligible when the vehicle is parked, while the 42 V maximum input handles the ISO 7637-2 load-dump pulse without external TVS protection. The fixed 5.0 V output powers CAN/LIN transceivers and wake-up logic directly. Placed between the battery feed and the ECU microcontroller's standby rail with a 1 µF X7R input capacitor and 1 µF X7R output capacitor within 5 mm of the pins, the regulator provides clean power with no switching noise. Unlike a switching pre-regulator, the TLS805B1LDV50XUMA1 adds no EMI and simplifies EMI compliance for the always-on rail.
Recommended
Industrial Sensor and Transmitter Supply
Industrial 4-20 mA loop-powered transmitters and field sensors benefit from the TLS805B1LDV50XUMA1's 42 V input tolerance, which accepts 24 V industrial bus rails directly. The 5.0 V fixed output powers microcontroller cores, ADC references, and HART modem chips with ±2 % accuracy. Its 5.5 µA quiescent current extends battery life in remote wireless sensor nodes that spend most of their life in sleep mode. The PG-TSON-10 exposed pad allows continuous 50 mA operation without heatsinking on a 50 mm² copper pour, critical for space-constrained sensor housings. The integrated current limit and thermal shutdown protect against field wiring faults and short-circuit conditions. This part complements Infineon's XMC1000 microcontrollers in compact industrial sensor designs.
Recommended
IoT Battery-Powered Node Standby Rail
Battery-powered IoT nodes (smart locks, environmental sensors, asset trackers) require standby rails that draw minimum current between wake events. The TLS805B1LDV50XUMA1's 5.5 µA Iq and sub-1 µA off-mode current make it ideal for keeping a wireless MCU or sensor in low-power sleep while monitoring a wake-up interrupt. The wide 2.75 V to 42 V input lets designers connect the LDO directly to a lithium-ion battery (4.2 V max), a 9 V battery, or even a USB/12 V adapter without reconfiguration. The 100 mV dropout ensures the 5.0 V output remains in regulation as the battery sags to 5.1 V under load. The Enable pin allows a host MCU to gate the output completely when the node enters deep sleep, reducing total system quiescent current below the LDO's own Iq floor.
Recommended
CAN/LIN Transceiver Power Supply
Automotive CAN and LIN transceivers require a stable 5.0 V supply that remains active during vehicle sleep for wake-on-CAN/LIN functionality. The TLS805B1LDV50XUMA1 provides this 5.0 V rail with 5.5 µA quiescent current, an order of magnitude lower than most switching alternatives, ensuring battery drain is minimized during long parking periods. Its ±2 % output accuracy meets the 5 V tolerance requirements of ISO 11898-1 CAN transceivers, and the 42 V load-dump tolerance allows direct connection to the battery bus. The exposed-pad PG-TSON-10 package dissipates the small (~250 mW at 50 mA) standby power without thermal concern. Designers typically pair this LDO with an Infineon TLE7250 LIN or TLE9251 CAN transceiver on the same PCB.
Recommended
Microcontroller Standby Voltage Rail
Many 32-bit microcontrollers require a permanent 5.0 V standby rail to power the RTC, backup SRAM, and wake-up logic when the main core is powered down. The TLS805B1LDV50XUMA1 fits this role perfectly: its 5.5 µA Iq keeps standby drain negligible, the Enable pin allows the MCU to fully gate the LDO during deep-sleep states, and the 42 V input tolerates industrial 24 V or automotive 12 V rails directly. The 100 mV dropout extends usable battery life when the input droops. This LDO is commonly used as a companion to a higher-current switching regulator that powers the MCU's main rail, with the TLS805B1 supplying the always-on domain. The PG-TSON-10 package complements switching regulators in the same design without requiring extra board area.
Recommended
LED Indicator and Backlight Driver Supply
The TLS805B1LDV50XUMA1 can power LED status indicators, small backlight strings, and optocoupler LEDs in industrial control panels and automotive interior lighting. At 50 mA it can drive a string of 3-5 white LEDs at 10-15 mA each with a series resistor, or a single high-brightness LED at full current. Its ±2 % output accuracy keeps LED brightness consistent across temperature, and the 42 V input accepts 24 V industrial panel supplies. The linear topology means no switching EMI, which is critical when LEDs are co-located with sensitive analog or RF circuitry on the same board. The exposed pad PG-TSON-10 footprint handles the continuous 50 mA load with minimal temperature rise. Designers often pair this LDO with a low-side MOSFET or BCR431U current regulator for precise LED current control.
Recommended
Recommended Products Summary
Engineering reference data for TLS805B1LDV50XUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLS805B1LDV33XUMA1 | TLS805B1LDVXUMA1 | TLS805B1LDV50ATMA1 | TLS810B1LDV50XUMA1 |
|---|---|---|---|---|---|
| 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 | 5.0 V fixed | 3.3 V fixed | Adjustable | 5.0 V fixed | 5.0 V fixed |
| Maximum Output Current | 50 mA | 50 mA | 50 mA | 50 mA | 100 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 | 2.75 V to 42 V |
| Quiescent Current | 5.5 µA | 5.5 µA | 5.5 µA | 5.5 µA | 11 µA |
| Dropout Voltage | 100 mV @ 50 mA | 100 mV @ 50 mA | 100 mV @ 50 mA | 100 mV @ 50 mA | 250 mV @ 100 mA |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 Grade-1 | AEC-Q100 |
Key Differentiators
- Ultra-low 5.5 µA quiescent current for always-on applications (vs TLS810B1LDV50XUMA1)
- Fixed 5.0 V output eliminates external feedback resistors (vs TLS805B1LDVXUMA1)
- Wide 42 V input voltage for direct battery connection (vs TLS805B1LDV33XUMA1)
Design Notes
Place the 1 µF X7R input and output ceramic capacitors within 5 mm of the VIN and VOUT pins respectively, using short and wide traces to minimize parasitic inductance. The PG-TSON-10 exposed pad must be soldered to a copper pour of at least 50 mm² on the top or bottom layer to provide thermal dissipation; without adequate thermal contact, the junction temperature will rise rapidly under sustained 50 mA load. Connect multiple thermal vias (0.3 mm drill, 0.6 mm pad) under the exposed pad to an inner plane for additional heat spreading.
At VIN=12 V, VOUT=5 V, and full 50 mA load, power dissipation is approximately (12-5) × 0.050 = 0.35 W. The PG-TSON-10 with 50 mm² copper pour achieves theta_JA of approximately 60-80 °C/W, resulting in a 25-30 °C temperature rise above ambient. This is well below the 150 °C thermal shutdown threshold under normal conditions. Estimated: power dissipation 0.35 W at VIN=12 V/VOUT=5 V/IOUT=50 mA; verify against the actual theta_JA from the datasheet thermal table for the chosen PCB copper area.
Do not exceed the absolute maximum VIN of 42 V; even brief transients beyond this limit can permanently damage the device. For automotive 12 V/24 V systems with possible load-dump pulses beyond 42 V, add an external TVS diode (such as a 36 V SMBJ series) at VIN. Do not operate the regulator without the input capacitor, as the inductive supply line can cause VIN to overshoot during load steps. The Enable pin must not be left floating; tie it to VIN through a 10-100 kΩ resistor or drive it actively with the host MCU.
Compliance Information
RoHS-compliant green product per Infineon datasheet 2016-08-23, Pb-free finish suitable for Pb-free soldering per IPC/JEDEC J-STD-020. AEC-Q100 qualified for automotive applications.
