Infineon Technologies TLE72702DATMA1

Overview

TLE72702DATMA1 from Infineon Technologies is a monolithic 5-V low-dropout linear voltage regulator with ±2% output accuracy, 20 µA quiescent current, and 300 mA output capability, designed for automotive microcontroller supply where stable 5 V rail and integrated power-on/undervoltage reset are required under 42 V input.

For engineers reviewing the TLE72702DATMA1 datasheet, TLE72702DATMA1 pinout, TLE72702DATMA1 application, or TLE72702DATMA1 equivalent, key selection criteria include ultra-low I_Q, reset timing configurability via DT pin, ceramic capacitor compatibility (≥470 nF), thermal performance in PG-TO252-5 package, and AEC-Q100 qualification for under-hood use.

Technical Context

The device integrates a charge pump-based LDO core with bandgap reference, enabling stable regulation down to 250 mV dropout at 200 mA while maintaining 20 µA I_Q. Its reset generator monitors V_Q and provides open-collector RO output with internal pull-up, configurable delay timing via DT pin connection to GND or Q.

Protection includes output current limiting (301 mA trip, 800 mA short-circuit), overtemperature shutdown (T_j ≥150 °C), and reverse-current sink to clamp Q ≤5.5 V. It operates across –40 °C to +150 °C junction temperature with RoHS-compliant green packaging.

Key Specifications

Pinout & Package

Package: PG-TO252-5 (D-Pak), thermally enhanced with exposed heat slug internally connected to GND. Requires PCB copper area ≥300 mm² for 62 K/W R_thJA.

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 TPS7B6750QDCYRQ1, TLE72702DATMA1 uniquely combines AEC-Q100 Grade 0 qualification, integrated reset with programmable delay, and 150 °C operation - making it the only option for high-temperature engine-bay MCU supply with self-contained POR.

Availability

TLE72702DATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera modules, and transmission control units requiring stable component supply under automotive-grade reliability and thermal constraints.

Supply support for TLE72702DATMA1 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 electronics, and industrial control ICs, with global manufacturing and qualification infrastructure.

The TLE727x family targets automotive power supply applications, specifically delivering robust, low-quiescent-current LDOs with integrated protection and reset for microcontroller domains in harsh environments.

FAQ

What is the minimum output capacitance required for stable operation?

The TLE72702DATMA1 requires a minimum 470 nF ceramic capacitor at the Q pin, with ESR ≤10 Ω at 10 kHz. This value accounts for worst-case ±30% capacitance tolerance and ensures phase margin >45° across temperature and load. X7R or X5R dielectrics are recommended; aluminum electrolytics are not supported.

How does the DT pin affect reset timing behavior?

Connecting DT to GND selects a fast power-on reset delay of approximately 10 ms, while connecting DT to Q selects a slow delay of ~100 ms. The internal reset generator uses this pin state at power-up to configure timing; no external components are needed. The RO output remains low until V_Q stabilizes above 4.75 V.

Can TLE72702DATMA1 be used with input voltages below 6 V?

No - the functional input range starts at 5.5 V per datasheet Section 4.2.1. Below this, regulation fails and reset may assert unpredictably. At VI = 5.5 V and IQ = 200 mA, dropout voltage (250–500 mV) leaves only 5.0–4.5 V at Q, which violates the ±2% spec. Operation below 5.5 V is outside guaranteed specifications.

Is an external pull-up resistor required on the RO pin?

No - RO has an internal pull-up to Q, eliminating need for external components. However, if driving a logic input referenced to a different supply (e.g., 3.3 V MCU), an external ≥10 kΩ pull-up to that rail is recommended to ensure valid high-level voltage. Leaving RO unconnected is acceptable if reset function is unused.