Infineon Technologies TLE4205NKLA1

Overview

TLE4205NKLA1 from Infineon Technologies is a bipolar full-bridge DC motor driver IC designed for automotive headlight beam adjustment. It delivers 1 A continuous output current per channel, integrates bidirectional free-wheeling diodes, features inhibit control and ESD-protected inputs, and operates across –40 °C to 150 °C junction temperature with short-circuit protection to ground up to 18 V supply.

For engineers reviewing the TLE4205NKLA1 datasheet, TLE4205NKLA1 pinout, TLE4205NKLA1 application, or TLE4205NKLA1 equivalent, key selection considerations include its dual-comparator architecture enabling full-bridge configuration, thermal shutdown at ~160 °C, open-loop gain of 80 dB at 500 Hz, input common-mode range from 0 V to VS–2 V, and P-DIP-18-3 package with 10 dedicated GND pins for low-impedance return paths.

Technical Context

The TLE4205NKLA1 implements two independent high-gain PNP-differential amplifiers (80 dB @ 500 Hz) whose outputs drive complementary power transistors in push-pull configuration. Each channel includes SOA-based short-circuit protection and thermal shutdown triggered at approx. 160 °C junction temperature.

Its input stage supports rail-to-rail common-mode voltage (0 V to VS–2 V), ±VS differential input capability, and exhibits 7.5 mV input offset voltage with 20 µV/K drift. The inhibit function disables both channels and reduces supply current to ≤100 µA, while integrated freewheeling diodes clamp inductive kickback to VS and GND.

Key Specifications

Pinout & Package

Packaged in P-DIP-18-3 (18-pin plastic dual in-line package), the TLE4205NKLA1 uses 10 dedicated ground pins (pins 4 and 10–18) for low-inductance return paths and thermal dissipation. Pin 2 is VS (supply), pins 1 and 3 are Q1/Q2 outputs, pins 5–8 are differential inputs (I1±, I2±), and pin 9 is INH.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar full-bridge DC motor driver applications.

Compared with BTS7810K and VNQ5E050AK, the TLE4205NKLA1 uniquely integrates dual comparators, full-bridge outputs, and bidirectional clamping in one P-DIP package-enabling compact, self-contained analog motor positioning without external logic or protection components.

Availability

TLE4205NKLA1 is available at Aetrix Electronics and suitable for automotive headlight adjustment, industrial linear actuator control, and medical lens focus mechanisms requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLE4205NKLA1 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 standards aligned to AEC-Q100.

The TLE4205NKLA1 belongs to Infineon's TLE automotive analog driver family, engineered specifically for robust, analog-controlled DC motor positioning in safety-critical vehicle subsystems.

FAQ

What is the maximum supply voltage the TLE4205NKLA1 can withstand continuously?

The TLE4205NKLA1 supports continuous operation from 6 V to 32 V supply voltage. Its absolute maximum rating is 45 V, but sustained operation above 32 V violates the specified operating range and risks parametric shift or premature failure under thermal stress.

Does the TLE4205NKLA1 require external freewheeling diodes for inductive loads?

No. The TLE4205NKLA1 integrates bidirectional freewheeling diodes between each output (Q1, Q2) and both VS and GND. These internal diodes fully handle inductive energy recirculation during PWM switching or sudden current interruption, eliminating the need for external diodes.

How does the inhibit function affect power consumption and output state?

When INH (pin 9) is grounded or left open, both Q1 and Q2 outputs are disabled and high-impedance. Supply current drops to ≤100 µA, and the IC enters ultra-low-power standby. No pull-up resistor is needed, and outputs remain safely off until INH is pulled high (≥2.0 V).

Can the TLE4205NKLA1 drive a 24 V DC motor?

Yes-the TLE4205NKLA1 operates across 6–32 V supply voltage and supports 24 V nominal systems. However, its short-circuit protection is only guaranteed up to 18 V supply to ground; at 24 V, external current limiting or fast-fuse protection is recommended for fault conditions.