Infineon Technologies CDM10V2XTSA1

Overview

CDM10V2XTSA1 from Infineon is a fully integrated 0–10 V dimming interface IC in SOT23-6 package, designed to convert analog voltage signals (0–10 V) from dimmers or potentiometers into a precise 5 mA, 1 kHz PWM current output for driving external optocouplers. It features 200 µA dimmer bias current, dim-to-off functionality below 1 V, and ±3% dimming accuracy across temperature and unit variation. Used in LED driver control stages of commercial luminaires and troffers.

For engineers reviewing the CDM10V2XTSA1 datasheet, CDM10V2XTSA1 pinout, CDM10V2XTSA1 application, or CDM10V2XTSA1 equivalent, this page delivers verified electrical specs, functional role in analog-to-PWM signal translation, thermal derating guidance, and validated alternative options for lighting control designs requiring stable 0–10 V interface performance.

Technical Context

The CDM10V2XTSA1 implements an embedded analog front-end with voltage-sensing on the Rdim+ pin and digital PWM generation logic, enabling direct conversion of 0–10 V input to a 5 mA current-mode PWM output without external op-amps or comparators. Its internal bias circuit delivers a tightly regulated 200 µA sink current for resistor-based dimmer interfaces.

It operates across 11–25 V VCC, supports dim-to-off behavior below 1 V input, and maintains ±3% dimming linearity from 1–9 V input range. The 1 kHz PWM frequency is factory-trimmed with ±6% tolerance and exhibits 40 µs wake-up time after VCC application.

Key Specifications

Pinout & Package

SOT23-6 package with exposed pad for thermal dissipation; footprint compatible with standard SOT-23 pick-and-place equipment and reflow profiles. Requires minimum 10 mm² copper pour under exposed pad for full 105°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 0–10 V to PWM interface applications.

Compared with UCC27531DR and NCP7804DR2G, the CDM10V2XTSA1 uniquely integrates voltage sensing, bias generation, PWM timing, and current output in one SOT23-6 device-reducing solution size by >60% and eliminating calibration in volume production.

Availability

CDM10V2XTSA1 is available at Aetrix Electronics and suitable for commercial troffer lighting, office downlight systems, and industrial undercabinet lighting requiring stable component supply, long-term lifecycle support, and consistent dimming performance across production batches.

Supply support for CDM10V2XTSA1 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, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

The CDM10V2XTSA1 belongs to Infineon's LED lighting interface product line, engineered specifically to replace multi-component 0–10 V dimming circuits with single-chip solutions for compact, high-reliability luminaires.

FAQ

What is the maximum allowable voltage on the Rdim+ pin?

The Rdim+ pin is rated for −0.5 V to VCC + 0.5 V. Exceeding VCC + 0.5 V-even with VCC unpowered-can permanently damage the device. A Schottky diode (e.g., MMSD301T1G) is recommended for active dimming circuits where back-EMF or coupling may cause overvoltage transients.

Can CDM10V2XTSA1 drive an optocoupler directly without external components?

Yes. With its 5 mA ±10% PWM output current and 1 kHz frequency, the CDM10V2XTSA1 directly drives standard PC817- or TLP18x-series optocouplers. No series resistor or buffer transistor is required when V_F of the optocoupler LED is ≤1.4 V at 5 mA.

How does dim-to-off behavior work, and is it configurable?

Dim-to-off is hardwired: output disables completely when Rdim+ voltage falls below 1 V. It is not user-configurable but ensures zero residual light in off-state-critical for emergency lighting compliance and dark-room applications. No external components affect this threshold.

What thermal derating applies above 70°C ambient?

Per Figure 3 in the datasheet, cooling area must scale linearly: at 105°C ambient, ≥100 mm² copper pour under the exposed pad is required for full 5 mA output. At 85°C ambient, ≥40 mm² is sufficient. Derating is not current-based but thermal-resistance–driven to maintain junction temperature ≤135°C.