Infineon Technologies CDM10VDXTSA1

Overview

CDM10VDXTSA1 from Infineon Technologies is a fully integrated 0–10 V analog dimming interface IC in SOT23-6 package, converting input voltage (0–10 V) into a fixed-frequency 1 kHz PWM current output (5 mA, 5% min duty cycle) to drive optocouplers in LED driver feedback loops. It features 200 mV dimming hysteresis, 11–25 V nominal V_CC, and replaces discrete resistor networks and comparators in commercial luminaires.

For engineers reviewing the CDM10VDXTSA1 datasheet, CDM10VDXTSA1 pinout, CDM10VDXTSA1 application, or CDM10VDXTSA1 equivalent, this device serves as a drop-in replacement for legacy 0–10 V dimming interfaces requiring tight unit-to-unit consistency, low PCB footprint, and flicker-free dimming control in constant-current LED drivers.

Technical Context

The CDM10VDXTSA1 implements an embedded analog-to-PWM conversion architecture with internal voltage reference, hysteresis comparator, and current-sink PWM generator. Its R_dim+ pin senses 0–10 V input with ±1% endpoint accuracy and enforces 200 mV hysteresis between dim-to-on (0.55–0.7 V) and dim-to-off (0.35–0.65 V) thresholds.

It operates across two V_CC ranges: full-spec performance at 11–25 V, and functional standby mode down to 6 V. The 1 kHz PWM output maintains stable 5% minimum duty cycle and 5 mA sink current without external timing components or bias resistors.

Key Specifications

Pinout & Package

SOT23-6 surface-mount package (2.9 × 1.6 × 1.1 mm), thermally optimized for PCB copper pour cooling per Infineon's recommended layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NCP7804 and UCC27511, CDM10VDXTSA1 delivers complete 0–10 V interface functionality in one chip - including hysteresis, fixed 1 kHz PWM, and extended V_CC - reducing design effort, validation time, and long-term calibration drift.

Availability

CDM10VDXTSA1 is available at Aetrix Electronics and suitable for commercial luminaires, office downlights, undercabinet lighting, and architectural signage requiring stable component supply and consistent dimming performance across production volumes.

Supply support for CDM10VDXTSA1 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 9001 and IATF 16949.

The CDM10VD series belongs to Infineon's LED lighting interface product line, engineered specifically for compact, high-accuracy 0–10 V dimming in space- and thermal-constrained luminaires.

FAQ

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

The R_dim+ pin must not exceed V_CC + 0.5 V. Exceeding this risks permanent damage. In active-dimming configurations where R_dim+ may be driven above V_CC, a Schottky diode (e.g., MMSD301T1G) is mandatory for clamping. This requirement is specified in Infineon's datasheet Section 3 and validated in Figure 2's typical application circuit.

Can CDM10VDXTSA1 operate with a 5 V supply?

No - CDM10VDXTSA1 requires minimum 6 V for functional operation and 11 V for full specification compliance. At 5 V, the device will not power up or generate valid PWM output. For 5 V systems, a boost converter or alternative dimming IC with lower V_CC rating must be used.

How does the 200 mV hysteresis improve dimming performance?

The 200 mV hysteresis separates dim-to-on (0.55–0.7 V) and dim-to-off (0.35–0.65 V) thresholds, preventing oscillation during slow-moving or noisy 0–10 V signals. This eliminates visible LED flicker at low dimming levels and improves stability in environments with EMI or long cable runs, as confirmed in Table 3 and Figure 4 of the datasheet.

Is CDM10VDXTSA1 pin-compatible with other CDM10VD variants like CDM10VD-2?

Yes - all CDM10VD variants (CDM10VD, CDM10VD-2, CDM10VD-3, CDM10VD-4) share identical SOT23-6 pinout and footprint. Differences are factory-programmed internal settings (min duty cycle and output current), not pin function. Board designs can accommodate any variant with no layout change.