Infineon Technologies CDM10VD3XTSA1

Overview

CDM10VD3XTSA1 from Infineon Technologies is a fully integrated 0–10 V dimming interface IC in SOT23-6 package, designed to convert analog dimmer voltage (0–10 V) or PWM input into a fixed-frequency 1 kHz, 1 mA current-mode PWM signal with 5% minimum duty cycle for driving optocouplers in LED driver feedback loops. It features 200 mV dimming hysteresis, 11–25 V nominal V_CC range (extendable to 6 V), and replaces discrete resistor networks, comparators, and op-amps in industrial luminaires and commercial downlights.

For engineers reviewing the CDM10VD3XTSA1 datasheet, CDM10VD3XTSA1 pinout, CDM10VD3XTSA1 application, or CDM10VD3XTSA1 equivalent, key selection criteria include dim-to-off hysteresis tolerance, output current amplitude (1 mA vs. 5 mA variants), minimum duty cycle setting (5% vs. 10%), V_CC extended-range behavior below 11 V, and R_dim+ pin voltage sensing thresholds for flicker-free dimming control.

Technical Context

The CDM10VD3XTSA1 implements embedded digital signal processing to maintain tight device-to-device variation in dimming thresholds and PWM timing. Its functional architecture includes an internal voltage comparator with programmable hysteresis, a 1 kHz oscillator, and a current-sink PWM driver stage optimized for direct optocoupler interfacing without external biasing components.

It supports dual operating modes: standard operation (11–25 V V_CC) with full parameter compliance, and extended low-voltage mode (6–11 V V_CC) for standby-state functionality during LED off-time-where dimming signal integrity is preserved despite reduced supply headroom.

Key Specifications

Pinout & Package

SOT23-6 package with exposed thermal pad (pin-compatible across CDM10VD-Series variants); compact footprint (2.9 × 1.6 × 1.1 mm) enables integration into space-constrained LED driver PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CDM10VD1XTSA1 and CDM10VD4XTSA1, the CDM10VD3XTSA1 balances deep dimming capability (5% min duty cycle) with low-power optocoupler drive (1 mA), making it optimal for thermally constrained commercial fixtures where both low-end linearity and standby efficiency matter.

Availability

CDM10VD3XTSA1 is available at Aetrix Electronics and suitable for commercial downlights, industrial troffers, and architectural signage requiring stable component supply, consistent dimming performance across production batches, and long-term lifecycle support.

Supply support for CDM10VD3XTSA1 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 high-accuracy, low-component-count 0–10 V dimming in space- and thermal-constrained LED drivers.

FAQ

What is the purpose of the 200 mV hysteresis in CDM10VD3XTSA1?

The 200 mV hysteresis separates the dim-to-bright threshold (0.55–0.7 V) from the dim-to-dark threshold (0.35–0.65 V) to prevent rapid on/off toggling near dimming boundaries. This eliminates visible flicker during slow or noisy dimmer voltage transitions-especially critical in potentiometer-based or long-cable installations where signal ripple is common.

Can CDM10VD3XTSA1 operate below 11 V V_CC without losing dimming function?

Yes-CDM10VD3XTSA1 remains functional down to 6 V V_CC, though electrical parameters may fall outside datasheet specifications. This extended range supports standby operation during LED off-states, preserving dimming position and enabling fast wake-up without reinitialization or communication handshake.

How does the R_dim+ pin handle overvoltage conditions?

The R_dim+ pin is internally clamped to V_CC + 0.5 V. When used with active dimmers (e.g., DALI gateways), a Schottky diode (e.g., MMSD301T1G) must be placed externally to prevent reverse current flow and protect against transient overvoltage exceeding this limit, ensuring long-term reliability.

Is CDM10VD3XTSA1 compatible with PWM input signals instead of analog 0–10 V?

Yes-the device accepts variable-frequency PWM inputs on the R_dim+ pin. Its internal digital signal processing filters and averages incoming PWM edges to derive an equivalent analog voltage level, enabling interoperability with microcontroller-based dimming controllers that lack dedicated DAC outputs.