Infineon Technologies TLE4286GHTSA1

Overview

TLE4286GHTSA1 from Infineon Technologies is a 5-V fixed-output low-dropout linear voltage regulator in PG-SCT-595-5 package, designed for automotive power supply rails. It delivers up to 15 mA output current with ±4% output accuracy (4.8 V–5.2 V), operates from 6.2 V to 42 V input, and features an inhibit input enabling <1 µA standby current. Used in engine control units for sensor biasing and microcontroller I/O rail conditioning.

For engineers reviewing the TLE4286GHTSA1 datasheet, TLE4286GHTSA1 pinout, TLE4286GHTSA1 application, or TLE4286GHTSA1 equivalent, key selection criteria include AEC-Q100 qualification, -40 °C to 150 °C junction temperature range, 60 µA typical quiescent current in ON mode, short-circuit and overtemperature protection, and PG-SCT-595-5 thermal performance (R_thj-pin = 30 K/W).

Technical Context

The TLE4286GHTSA1 integrates a bandgap reference, error amplifier, pass transistor, and protection circuitry in a monolithic silicon design. Its inhibit logic accepts TTL-compatible input levels (V_INH,ON ≥ 3.5 V, V_INH,OFF ≤ 0.3 V) to enable/disable regulation without external pull-ups.

Internal thermal shutdown activates at T_j ≥ 150 °C, and output short-circuit current is internally limited to ≤70 mA. The regulator requires a minimum 1 µF output capacitor with ESR ≤ 10 Ω at 10 kHz for stability across its full operating temperature range.

Key Specifications

Pinout & Package

Package: PG-SCT-595-5 - thermally enhanced 5-pin SMD package with exposed pad (pin 5), R_thj-pin = 30 K/W, footprint compatible with reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5-V automotive LDO regulator applications.

Compared with TLV73350PDBVR and TPS7B6750QPWPRQ1, the TLE4286GHTSA1 uniquely balances ultra-low standby current (<1 µA), AEC-Q100 Grade 0 qualification, and PG-SCT-595-5 thermal efficiency-making it optimal for space-constrained, always-on automotive nodes where leakage current and under-hood temperature are critical.

Availability

TLE4286GHTSA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across extended automotive temperature and voltage ranges.

Supply support for TLE4286GHTSA1 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 ICs, and industrial control solutions, with global manufacturing and automotive qualification infrastructure.

The TLE4286GHTSA1 belongs to Infineon's TLE automotive linear regulator family, engineered specifically for robust, low-power, high-temperature power supply in engine, transmission, and chassis control modules.

FAQ

What is the minimum output capacitor value required for stable operation?

The TLE4286GHTSA1 requires a minimum 1 µF ceramic or tantalum output capacitor with ESR ≤ 10 Ω at 10 kHz, placed directly between pin 4 (Q) and pin 2/5 (GND). This ensures phase margin >45° across -40 °C to 150 °C and prevents oscillation under dynamic load steps.

Does the inhibit input require a pull-up resistor?

No external pull-up is needed. The INH pin has internal logic-level compatibility: it draws only ±2 µA in L-state and ≤15 µA in H-state, and functions correctly when driven directly by MCU GPIO or open-collector driver without external biasing components.

Can the TLE4286GHTSA1 operate with input voltage below 6.2 V?

No. The device is specified for 6.2 V to 42 V input. Below 6.2 V, regulation fails: output drops linearly with input, and internal reference/bias circuitry may not activate. Operation below 6.2 V is outside absolute maximum ratings and voids AEC-Q100 qualification.

How does thermal performance compare between pins 2 and 5?

Pins 2 and 5 are internally bonded and share the same thermal node. Pin 5 is the exposed thermal pad-the primary heat conduction path to PCB copper. R_thj-pin = 30 K/W is measured to pin 5; using pin 2 alone for thermal relief yields significantly higher junction temperature due to longer internal thermal path.