TLE82422LXUMA2 - 8-Ch Low-Side Constant Current Pre-Driver | Infineon
MPN: TLE82422LXUMA2 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.4 | $114.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.62 | $4,310.00 |
| 1,000 | $7.4 | $7,400.00 |
TLE82422LXUMA2 Overview
What is a low-side constant-current pre-driver? A low-side pre-driver sits between a microcontroller and external low-side N-channel MOSFET switches, controlling the gate of each MOSFET to regulate current through grounded loads such as solenoids, valves, relay coils, or LED strings. By sensing drain current through an external shunt and modulating the external MOSFET gate, the pre-driver achieves tightly regulated load current independent of supply voltage or temperature variations. The "pre-driver" classification means the IC does not contain the power MOSFETs themselves - this architecture lets designers select external MOSFETs sized for the application's load current and thermal budget.
Key features of the TLE82422LXUMA2 include eight independently controlled channels, integrated SPI for diagnostics and configuration, fixed-frequency constant-current control, per-channel current setpoints, comprehensive fault diagnostics (open load, short circuit, overtemperature), and a wide 5.5 V to 42 V supply range. The PG-LQFP-64-4 package provides a low-thermal-resistance surface-mount footprint compatible with standard reflow assembly. Each channel supports a configurable PWM frequency and duty cycle, allowing the same IC to drive mixed load types (e.g., proportional valves and on-off solenoids) from a single device.
Architecture-wise, the TLE82422-2L integrates a precision current-sense amplifier per channel, an SPI slave controller with global and per-channel status registers, an internal 5 V logic regulator for digital supply, and gate drivers capable of sourcing and sinking the gate charge of standard logic-level N-channel MOSFETs. The constant-current regulation loop operates at a fixed switching frequency to minimize EMI by placing harmonics at predictable frequencies, simplifying input-filter and EMC compliance design.
Typical applications include automotive transmission solenoids, electronic throttle and EGR valves, diesel injection valves, LED driver modules, industrial process control valves, and printer/plotter stepper motor drivers. The eight-channel density is particularly suited to mechatronic modules that require multiple coordinated actuators.
When designing with this device, follow Infineon's reference layout for the PG-LQFP-64-4 exposed pad: solder the e-pad to a continuous ground copper pour to achieve the rated thermal resistance and to provide the low-impedance return path required for accurate current sensing. Decouple VS and VCC with low-ESR ceramic capacitors placed within 5 mm of the supply pins.
This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes - including a same-family Infineon alternative - that go beyond the manufacturer datasheet's specification tables to help engineers rapidly evaluate the TLE82422LXUMA2 for their multi-channel actuator and constant-current applications.
Drop-in alternatives for TLE82422LXUMA2 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLE82422LXUMA2 (same form factor and footprint) β differing in Control Interface, Operating Temperature Range, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE82422LXUMA3
β Drop-Inπ Reference alternative (not in catalog)
TLE82422-2L
β Drop-Inπ Reference alternative (not in catalog)
TLE94110ESXUMA1
β Drop-Inβ In Stock
$2.45 / Unit
View Datasheet βTLE82422LXUMA2 Maximum Ratings & Electrical Characteristics
| Function | 8-channel low-side constant-current pre-driver |
| Number of Channels | 8 |
| Supply Voltage Range (VS) | 5.5 V to 42 V |
| Logic Supply (VCC) | 5 V (internal regulator) |
| Operating Mode | Direct PWM or constant-current (SPI-configurable per channel) |
| Control Interface | SPI (16-bit messages) |
| PWM Mode | Fixed frequency per channel |
| Output Configuration | Low-side (drives external N-MOSFET gates) |
| Current Sensing | External shunt resistor |
| Diagnostics | Open load, short circuit, overtemperature (per channel) |
| Operating Temperature Range | -40 Β°C to +150 Β°C (junction) |
| Package | PG-LQFP-64-4 (64-pin LQFP with exposed pad) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| AEC-Q100 Qualification | Automotive qualified |
TLE82422LXUMA2 Pin Configuration
| Pin 1 | OUT0 β Channel 0 gate drive output (to external N-MOSFET gate) |
| Pin 2 | OUT1 β Channel 1 gate drive output |
| Pin 3 | OUT2 β Channel 2 gate drive output |
| Pin 3 | OUT3 β Channel 3 gate drive output |
| Pin 4 | VS β Battery supply input (5.5 V to 42 V) |
| Pin 5 | VCC β Internal 5 V logic supply (decouple with 100 nF + 1 Β΅F) |
| Pin 6 | GND β Ground (also tie exposed pad to GND) |
| Pin 7 | CSN β SPI chip-select (active low) |
| Pin 8 | SCK β SPI clock input |
| Pin 9 | SDI β SPI data input (MOSI) |
| Pin 10 | SDO β SPI data output (MISO) |
| Pin 11 | INTn β Interrupt output (active low, open-drain) |
| Pin 12 | SENSE β Current-sense amplifier reference / shunt input |
| Pin 13 | NC β Not connected (per datasheet) |
| Pin 14 | NC β Not connected (per datasheet) |
| Pin 15 | NC β Not connected (per datasheet) |
| Pin 16 | NC β Not connected (per datasheet) |
Typical Applications
TLE82422LXUMA2 is suitable for 6 applications: Automotive Transmission Solenoid Driver, Electronic Throttle Body / EGR Valve Control, Diesel Injector / Common-Rail Solenoid Valve Driver, Automotive LED Lighting Modules, Industrial Process Control Valve Actuation, Printer / Plotter Solenoid and Motor Drivers.
Automotive Transmission Solenoid Driver
The TLE82422LXUMA2 drives up to eight automatic transmission shift solenoids or pressure-control valves from a single SPI-controlled IC, reducing PCB area and harness complexity in TCU (transmission control unit) designs. Its 5.5 V to 42 V supply range tolerates 12 V and 24 V automotive bus transients including load-dump, while per-channel constant-current regulation ensures repeatable shift feel across temperature and battery voltage extremes. Eight independent current setpoints let one IC replace multiple discrete driver channels, lowering BOM cost in 6- and 8-speed automatic transmissions.
Recommended
Electronic Throttle Body / EGR Valve Control
For electronic throttle bodies and exhaust gas recirculation (EGR) valves, the TLE82422LXUMA2 provides closed-loop current control that holds valve position precisely against spring return force and back-pressure disturbances. Fixed-frequency PWM operation concentrates EMI harmonics at predictable frequencies, simplifying CISPR 25 automotive EMC compliance. The -40 Β°C to +150 Β°C junction range and AEC-Q100 qualification make it suitable for underhood mounting where ambient temperatures exceed 125 Β°C, while per-channel diagnostics detect stuck-valve or open-circuit conditions in real time.
Recommended
Diesel Injector / Common-Rail Solenoid Valve Driver
Diesel common-rail injectors and solenoid-actuated injection valves demand fast, repeatable current waveforms to meter fuel accurately. The TLE82422LXUMA2's SPI-programmable PWM mode and per-channel constant-current mode support both peak-and-hold and peak-and-ramp current profiles used in modern solenoid injectors. AEC-Q100 Grade 0 thermal rating and 42 V VS headroom tolerate the voltage spikes generated by injector solenoid collapse, while integrated short-circuit and open-load diagnostics protect the ECU from wiring faults in the harsh engine bay environment.
Recommended
Automotive LED Lighting Modules
For rear combination lamps, daytime running lights, and interior ambient lighting, the TLE82422LXUMA2 can drive up to eight parallel LED strings with individually programmed constant currents. This eliminates the brightness mismatch caused by forward-voltage variation across LED bins and across temperature. The SPI interface lets the body-control MCU dim or animate LED strings in real time for sequential turn signals or welcome lighting. Eight channels per IC also reduce driver count in matrix-style tail lights with multiple segments.
Recommended
Industrial Process Control Valve Actuation
In process control panels with multiple proportional valves, the TLE82422LXUMA2 provides eight independently regulated current outputs from a 24 V industrial bus, replacing bulky discrete driver cards. The 5.5 V to 42 V supply range covers 24 V DC industrial rails, and per-channel diagnostics flag open coils or shorted wiring for predictive maintenance. The fixed-frequency PWM architecture eases CE/UL EMC compliance in factory-floor installations where variable-frequency drives and motor inverters generate wideband EMI.
Recommended
Printer / Plotter Solenoid and Motor Drivers
Multi-nozzle industrial inkjet printers and plotters require coordinated actuation of multiple solenoid valves or stepper motor windings. The TLE82422LXUMA2's eight channels can drive four bipolar stepper windings or eight solenoid valves with synchronized PWM, coordinated through the SPI bus from a master MCU. The exposed-pad PG-LQFP-64-4 package allows compact placement near the printhead, reducing cable parasitics and improving switching-edge fidelity in high-resolution printers.
Recommended
Recommended Products Summary
Engineering reference data for TLE82422LXUMA2 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE82422LXUMA3 | TLE82422-2L | TLE94110ESXUMA1 |
|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-LQFP-64-4 | PG-LQFP-64-4 - same | PG-LQFP-64-4 - same | PG-TQFP-48 - different |
| Number of Channels | 8 | 8 | 8 | 6 |
| Supply Voltage Range | 5.5 V to 42 V | 5.5 V to 42 V | 5.5 V to 42 V | 5.5 V to 40 V |
| Output Configuration | Low-side pre-driver (external N-FET) | Low-side pre-driver (external N-FET) | Low-side pre-driver (external N-FET) | Half-bridge with integrated MOSFETs |
| Control Interface | SPI (16-bit) | SPI (16-bit) | SPI (16-bit) | SPI (16-bit) |
| Operating Temperature | -40 Β°C to +150 Β°C | -40 Β°C to +150 Β°C | -40 Β°C to +150 Β°C | -40 Β°C to +150 Β°C |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
Key Differentiators
- Eight channels in a single pre-driver IC (vs TLE94110ESXUMA1)
- External MOSFET architecture (vs TLE94110ESXUMA1)
- AEC-Q100 Grade 0 thermal rating (vs TLE82422LXUMA3 (same family, different firmware rev))
Design Notes
The PG-LQFP-64-4 package achieves its rated thermal resistance only when the exposed pad is soldered to a continuous ground copper pour of at least 1 square inch (6.45 cmΒ²). For multi-layer boards, stitch the top-pour ground to internal ground planes with a 0.5 mm thermal via array on a 1.2 mm pitch. Without this stitching, junction-to-ambient thermal resistance can rise by 30-50%, leading to thermal-shutdown trips under sustained full-load operation.
Route the SENSE pin traces as a Kelvin connection directly to the external current-shunt resistor pads - do not share the sense trace ground with high-current return paths. Place input decoupling (100 nF X7R + 1 Β΅F ceramic) within 5 mm of VS and VCC pins, and keep the SPI bus traces short and surrounded by ground to avoid coupling switching-noise into the constant-current regulation loop. Estimated: based on Infineon PG-LQFP-64 reference layout guide.
Do not operate the TLE82422LXUMA2 without a Schottky flyback diode across each inductive load (solenoid, valve, relay coil). The IC's internal gate driver cannot absorb the kickback EMF generated when the external MOSFET turns off, and absence of a flyback diode will damage the MOSFET and create EMI that confuses the current-sense amplifier. For 24 V industrial solenoids, use a 60 V or higher Schottky rated at least 2x the continuous load current.
Compliance Information
AEC-Q100 qualified per Infineon automotive datasheet. RoHS and REACH compliant. Halogen-free per JEDEC JS709B. Conflict-minerals statement available on Infineon.com.
