Infineon Technologies TLS202A1MBVHTSA1

Overview

TLS202A1MBVHTSA1 from Infineon Technologies is an AEC-Q100 qualified adjustable linear voltage post regulator for automotive power systems, delivering 1.2 V to 5.25 V output at up to 150 mA with ±3 % accuracy, 290 mV typical dropout, and 65 dB PSRR at 10 kHz - used as a low-quiescent, high-PSRR secondary regulator downstream of DC/DC pre-regulators in body control modules and infotainment power domains.

For engineers reviewing the TLS202A1MBVHTSA1 datasheet, TLS202A1MBVHTSA1 pinout, TLS202A1MBVHTSA1 application, or TLS202A1MBVHTSA1 equivalent, key selection criteria include adjustable output range (1.2–5.25 V), ultra-low 50 µA quiescent current, -40 °C to +150 °C junction temperature operation, thermal shutdown threshold (151–190 °C), and PG-SCT595 package compatibility with automotive PCB heatsink area requirements.

Technical Context

The TLS202A1MBVHTSA1 implements a bandgap-referenced feedback loop with external resistor divider on the ADJ pin to set output voltage; regulation stability depends critically on output capacitor value (≥1 µF) and ESR (≤10 Ω at 10 kHz). Its pass transistor driver includes integrated current limiting and thermal shutdown circuitry that cycles off/on under sustained overload.

Designed exclusively for post-regulation - not direct battery connection - it operates within 2.7 V to 18 V input range and requires both Pin 2 and Pin 5 (GND) soldered to PCB heatsink areas for thermal management, leveraging dual-GND thermal path to achieve R_thJA = 103 K/W with 600 mm² copper area.

Key Specifications

Pinout & Package

Package: PG-SCT595 - 5-pin surface-mount package with exposed thermal pad; requires soldering of both GND pins (2 and 5) to PCB heatsink area for thermal compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable linear post-regulator applications.

Compared with TLV70733PDQNR and TPS799125DRVR, TLS202A1MBVHTSA1 uniquely combines AEC-Q100 Grade 0 qualification, 1.2–5.25 V adjustability, 150 mA capability at 150 °C, and dual-GND thermal design - making it the sole choice for high-reliability automotive post-regulation where voltage flexibility and thermal resilience are mandatory.

Availability

TLS202A1MBVHTSA1 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, infotainment systems, and transmission control units requiring stable component supply across automotive production lifecycles.

Supply support for TLS202A1MBVHTSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in AEC-Q100-qualified analog and mixed-signal solutions.

The TLS202A1 belongs to Infineon's automotive linear regulator product line, engineered specifically for post-regulation in harsh-temperature automotive subsystems where low quiescent current, high PSRR, and thermal survivability are critical.

FAQ

What is the minimum output capacitance required for stable operation?

The TLS202A1MBVHTSA1 requires a minimum 1 µF ceramic output capacitor with ESR ≤10 Ω at 10 kHz for guaranteed stability across –40 °C to +150 °C. This value accounts for worst-case ±30 % capacitance tolerance and ensures phase margin >45° under all load and temperature conditions per the functional range specification.

Can the ADJ pin be left unconnected or tied directly to ground?

No - the ADJ pin must be connected either directly to the output (Q) pin for 1.2 V fixed operation or to a resistor divider between Q and GND for adjustable outputs. Leaving it floating or grounding it disables regulation and may cause unpredictable output behavior or thermal shutdown due to invalid feedback conditions.

Is the TLS202A1MBVHTSA1 compatible with ceramic capacitors only, or can tantalum be used?

Ceramic capacitors are required for stability per the datasheet; tantalum capacitors are not recommended due to higher ESR and aging effects that violate the ≤10 Ω ESR requirement at 10 kHz. Using tantalum risks oscillation, especially at high temperatures or light loads, and voids AEC-Q100 reliability validation.

How does the thermal shutdown behave during sustained short-circuit conditions?

Under sustained short-circuit, the TLS202A1MBVHTSA1 enters thermal shutdown at 151–190 °C, turns off the pass transistor, cools down, then automatically restarts - creating a controlled oscillatory output. This cycle prevents permanent damage but is not intended for continuous operation; system design must limit fault duration or add upstream current limiting to avoid accelerated wear.