Infineon Technologies ICE3B2065JXKLA1

Overview

ICE3B2065JXKLA1 from Infineon Technologies is an integrated off-line SMPS current-mode controller with built-in 650V CoolMOS® and startup cell in PG-DIP-8 package, operating at fixed 67 kHz switching frequency, delivering up to 57W input power at 230VAC ±15%, supporting active burst mode for <100mW standby power, and featuring frequency jittering for EMI reduction - used in low-cost AC/DC adapters and auxiliary power supplies.

For engineers reviewing the ICE3B2065JXKLA1 datasheet, ICE3B2065JXKLA1 pinout, ICE3B2065JXKLA1 application, or ICE3B2065JXKLA1 equivalent, key selection criteria include its integrated 650V avalanche-rugged CoolMOS®, precise ±5% peak current limiting tolerance, adjustable blanking window via SoftS capacitor, auto-restart protection modes (overtemperature, overvoltage, open-loop), and BiCMOS-based 10.3–26V VCC operating range.

Technical Context

The ICE3B2065JXKLA1 implements a current-mode PWM control architecture with internal oscillator, leading-edge blanking, propagation delay compensation, and precise peak-current sensing referenced to the CS pin. Its integrated CoolMOS® drain connects directly to Pin 4/5, eliminating external high-voltage startup resistors.

It features a dual-function SoftS pin enabling soft-start ramp generation, frequency jitter period control, and programmable blanking window for load-jump immunity - all set by a single external capacitor. The FB pin accepts optocoupler feedback to regulate output voltage while dynamically controlling active burst mode entry/exit without secondary-side circuit changes.

Key Specifications

Pinout & Package

Package: PG-DIP-8 (Plastic Dual In-line Package, 8-pin, through-hole mount). Pins 4 and 5 are internally shorted as common Drain connection for the integrated CoolMOS®.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar off-line SMPS controller applications.

Compared with ICE3B1565J and ICE3B0565J, the ICE3B2065JXKLA1 delivers highest power density (57W) and lowest RDS(on) (0.92Ω) in the CoolSET®-F3 jitter family, enabling smaller magnetics and cooler operation in universal-input 45–60W adapters without sacrificing safety protections or EMI performance.

Availability

ICE3B2065JXKLA1 is available at Aetrix Electronics and suitable for USB wall chargers, smart home sensor power supplies, LED driver auxiliary rails, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE3B2065JXKLA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

The CoolSET®-F3 product line targets cost-sensitive, high-efficiency off-line SMPS designs for consumer and industrial adapters - integrating CoolMOS®, startup cell, and burst-mode control to minimize external components and meet stringent standby regulations.

FAQ

What is the purpose of the SoftS pin in ICE3B2065JXKLA1?

The SoftS pin serves three integrated functions: it sets the soft-start ramp time via external capacitor, defines the blanking window duration to suppress false overload detection during load transients, and controls the frequency jitter period to reduce EMI peaks. All are adjusted by a single capacitor to ground - no additional resistors or timing ICs required.

Does ICE3B2065JXKLA1 require an external startup resistor?

No. ICE3B2065JXKLA1 integrates a high-voltage startup cell connected directly to the Drain pin, sourcing 1.05 mA to charge the VCC capacitor during initial power-up. This eliminates the need for an external high-voltage resistor, reducing component count, power loss, and board space - especially beneficial in compact adapters.

How does Active Burst Mode differ from traditional burst mode in ICE3B2065JXKLA1?

Unlike conventional burst mode that disables the controller between cycles, Active Burst Mode keeps the IC fully powered and responsive. It maintains continuous regulation via the FB pin, enabling immediate load-jump response (<10 µs), <1% output ripple, and seamless transition back to PWM mode - critical for applications requiring stable auxiliary rails during sensor wake-up events.

What protection features are implemented in ICE3B2065JXKLA1?

ICE3B2065JXKLA1 includes auto-restart protection for overtemperature, VCC overvoltage, output open-loop, overload, and VCC undervoltage conditions. Each fault triggers a controlled shutdown and automatic restart after fault clearance - no manual reset or AC disconnect required. All protections use internal thresholds and do not rely on external components.