Infineon Technologies TLE63893GV50XUMA2

Overview

TLE63893GV50XUMA2 from Infineon is a fixed 5V step-down DC/DC controller driving an external P-channel MOSFET, supporting input voltages up to 60V, delivering up to 2.3A output current with 3% voltage accuracy and 360kHz fixed switching frequency. It integrates undervoltage reset (1V hysteresis), on-chip low-battery detection (SI comparator), and operates across automotive temperature range (−40°C to +150°C) for engine control units and body electronics.

For engineers reviewing the TLE63893GV50XUMA2 datasheet, TLE63893GV50XUMA2 pinout, TLE63893GV50XUMA2 application, or TLE63893GV50XUMA2 equivalent, key selection criteria include its 100% duty-cycle capability for ultra-low dropout, SI_ENABLE-controlled SI_GND switching, open-drain RO/SO outputs with internal 20kΩ pull-up to VOUT, and PG-DSO-14 package compatibility with AEC-Q100 qualified automotive designs.

Technical Context

The TLE63893GV50XUMA2 implements a PWM/PFM hybrid control scheme enabling continuous-conduction mode operation down to 1mA load while maintaining <120µA quiescent current. Its current-mode architecture uses CS pin sensing with external RSENSE (e.g., 47mΩ) to regulate peak inductor current and prevent overcurrent faults.

It features dual comparator subsystems: SI input compared to 1.25V reference for battery monitoring (SO output), and FB-connected internal divider for 5V regulation with RO output tied to undervoltage reset logic (4.5–4.8V threshold, 1V hysteresis). SYNC input allows external clock synchronization without altering internal oscillator behavior.

Key Specifications

Pinout & Package

Package: PG-DSO-14 (RoHS-compliant, thermally enhanced SOIC-14 with exposed pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down controller applications.

Compared with TLV62569DRVR and LM5164QDGSRQ1, the TLE63893GV50XUMA2 uniquely integrates automotive-grade reset, battery monitoring, and 60V operation in a single PG-DSO-14 package - reducing system-level component count and qualification effort for ECU/BCM designs.

Availability

TLE63893GV50XUMA2 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and electric power steering sensor supplies requiring stable component supply across automotive production lifecycles.

Supply support for TLE63893GV50XUMA2 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 qualification infrastructure.

The TLE6389 product line delivers AEC-Q100-qualified step-down controllers for automotive power systems, designed specifically to replace discrete regulator + supervisor + monitor circuits in ECUs, BCMS, and safety-critical modules.

FAQ

What is the function of the SI_ENABLE pin on TLE63893GV50XUMA2?

The SI_ENABLE pin controls the connection state of the SI_GND terminal. When SI_ENABLE is high, SI_GND is actively pulled to GND with low impedance, completing the voltage divider for the SI comparator. When SI_ENABLE is low, SI_GND goes into high-impedance mode, effectively disconnecting the battery-sense network to reduce leakage current during system sleep - a feature critical for always-on automotive modules.

Does TLE63893GV50XUMA2 require external feedback resistors for 5V output?

No. The TLE63893GV50XUMA2 has an internal voltage divider connected to the FB pin, preset for 5.0V ±3% regulation. External feedback resistors are unnecessary and must not be connected - doing so would disrupt regulation accuracy and potentially cause instability. This distinguishes it from the adjustable TLE6389-2GV variant, which requires external resistors on FB.

How does the RO output behave during undervoltage conditions?

The RO pin is an open-drain output with an internal 20kΩ pull-up resistor to VOUT. During normal operation (VOUT ≥4.8V), RO remains high-impedance, allowing the pull-up to hold it at ~5V. When VOUT drops below 4.5V, RO pulls low to signal reset; recovery occurs only after VOUT rises above 4.8V due to 1V hysteresis - preventing oscillation during slow voltage recovery typical in automotive battery transients.

Can TLE63893GV50XUMA2 synchronize to an external clock, and what are the constraints?

Yes, the SYNC pin accepts external TTL/CMOS clock signals up to 360kHz. When driven, the internal oscillator is disabled and switching is locked to the external frequency. The SYNC signal must be stable and free of glitches; duty cycle is not critical, but edges must meet minimum slew rate requirements per datasheet Section 7.8. This capability enables EMI reduction in multi-converter systems by eliminating beat frequencies.