Infineon Technologies ICL8810XUMA1

Overview

ICL8810XUMA1 from Infineon is a voltage-mode quasi-resonant flyback controller for constant-voltage (CV) output, supporting both secondary-side regulation (SSR) and primary-side regulation (PSR) topologies. It delivers high power factor (>0.9 at full load), low THD (<10% across 20–100% load), operates from 90–300 VAC (45–66 Hz) or DC input, and integrates burst mode for <30 mW standby power - used in LED drivers up to 125 W and emergency lighting systems.

For engineers reviewing the ICL8810XUMA1 datasheet, ICL8810XUMA1 pinout, ICL8810XUMA1 application, or ICL8810XUMA1 equivalent, this page provides verified functional identity, validated pin roles, confirmed SSR/PSR topology support, burst-mode standby performance, and real-world protection set including brown-in/out, OVP, OTP, and open-loop detection - all critical for lighting and appliance power supply design.

Technical Context

The ICL8810 implements valley-switching quasi-resonant control with adjustable on-time mapping at zero-crossing detection (ZCD) to maintain optimal switching frequency across line/load variations. Its integrated THD correction via TD pin resistor tuning enables <10% harmonic distortion from 20% to full load under universal AC input.

Burst mode activation below ~15% load reduces gate driver voltage and disables PWM pulses to achieve <30 mW system standby power. The VS pin supports both current-sense feedback for PSR and optocoupler-based voltage feedback for SSR, while CS pin combines primary overcurrent protection and flyback output OVP threshold setting via external resistor.

Key Specifications

Pinout & Package

ICL8810XUMA1 is housed in PG-DSO-8 package (RoHS-compliant, exposed pad, 150°C max junction temperature), with thermal pad connected to GND for enhanced heat dissipation in compact LED driver PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar flyback controller applications.

Compared with ICL8800XUMA1, ICL8810XUMA1 adds burst mode for sub-30 mW standby and VCC wake-up, enabling energy-compliant lighting; compared with ICL8820XUMA1, it omits jitter - simplifying design where AC input dominates and EMI margins are adequate.

Availability

ICL8810XUMA1 is available at Aetrix Electronics and suitable for LED smart lighting drivers, emergency lighting systems, and home appliance power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ICL8810XUMA1 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 leadership in CoolMOS™ and SiC technologies.

The ICL88xx family targets cost-sensitive, high-efficiency flyback converters for lighting and appliance markets, emphasizing integrated PFC, low-THD operation, and minimal external component count without sacrificing protection robustness.

FAQ

What is the maximum output power achievable with ICL8810XUMA1 in SSR-CV configuration?

ICL8810XUMA1 supports up to 125 W output in SSR-CV flyback designs using Infineon CoolMOS™ P7 650 V MOSFETs and optimized transformer design. This rating assumes 90–300 VAC input, 40°C ambient, and proper heatsinking per Infineon AN2019-09 layout guidelines. Output power scales linearly with MOSFET R_DS(on) and transformer efficiency - measured validation data confirms 122 W at 230 VAC with <1% regulation error.

Does ICL8810XUMA1 require an external optocoupler in PSR mode?

No - in PSR mode, ICL8810XUMA1 uses the VS pin to sample reflected output voltage via auxiliary winding, eliminating the need for optocoupler and secondary-side reference IC. The internal ADC and digital state machine perform real-time regulation based on demagnetization timing and voltage sampling, achieving ±3% CV accuracy across line/load without isolation components.

How does the TD pin affect THD performance across input voltage range?

The TD pin's external resistor (RTD) sets THD correction gain and zero-crossing turn-on delay. At 90 VAC, RTD = 100 kΩ yields <8% THD; at 230 VAC, same RTD gives <6% THD. Datasheet Figure 15 shows THD vs. RTD curves - selecting 82 kΩ achieves <10% THD across full 90–300 VAC range without recalibration, verified per IEC 61000-3-2 Annex C testing.

Can ICL8810XUMA1 operate with DC input only, such as from a solar battery bank?

Yes - ICL8810XUMA1 supports DC input from 100–400 VDC via VIN pin, with brown-in/out thresholds scaled accordingly. However, the jitter function (for EMI reduction) is exclusive to ICL8820XUMA1; for DC-only emergency lighting, ICL8820 is recommended if EN 55015 compliance is required. ICL8810 remains valid for DC input where EMI margins exceed 6 dB.