Infineon Technologies ICE3B0365JFKLA1

Overview

ICE3B0365JFKLA1 from Infineon Technologies is an integrated off-line SMPS current-mode controller with a monolithically embedded 650V CoolMOS® power transistor and startup cell in PG-DIP-8 package. It delivers 6.45W output at 230VAC ±15%, operates at fixed 67kHz switching frequency with frequency jittering, supports active burst mode for <100mW standby power, and targets low-cost AC/DC adapters and auxiliary power supplies.

For engineers reviewing the ICE3B0365JFKLA1 datasheet, ICE3B0365JFKLA1 pinout, ICE3B0365JFKLA1 application, or ICE3B0365JFKLA1 equivalent, key selection criteria include its integrated 650V CoolMOS®, active burst mode behavior, soft-start/blanking window control via SoftS pin, precise ±5% peak current limiting, and auto-restart protection modes for overload, overvoltage, overtemperature, and VCC undervoltage.

Technical Context

The ICE3B0365JFKLA1 implements a BiCMOS-based current-mode PWM architecture with internal oscillator, leading-edge blanking, propagation delay compensation, and a dedicated control unit managing active burst mode entry/exit and adjustable blanking window timing. Its integrated 650V CoolMOS® features avalanche ruggedness and a switchable high-voltage startup cell connected directly to the Drain pin.

Power management includes undervoltage lockout (18V turn-on / 10.3V turn-off), VCC supply range of 10.3–26V, and automatic power-down reset during soft-start capacitor discharge. Protection logic triggers auto-restart on open-loop, overload, overvoltage, overtemperature, and VCC undervoltage faults - all without external components.

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; Pin 6 is not connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE3B0565J and ICE3B1565J, ICE3B0365JFKLA1 strikes the optimal trade-off between standby efficiency, output capability, and BOM cost for mainstream 5–7W AC/DC adapters - avoiding over-specification while meeting global energy standards.

Availability

ICE3B0365JFKLA1 is available at Aetrix Electronics and suitable for USB wall adapters, smart home power supplies, LED driver auxiliary supplies, and industrial control module PSUs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE3B0365JFKLA1 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 electronics, and industrial control ICs, with global R&D and manufacturing infrastructure.

The CoolSET®-F3 product line integrates HV power MOSFETs and controllers for cost-sensitive off-line SMPS designs - specifically engineered to minimize external component count while meeting stringent global energy efficiency regulations.

FAQ

What is the purpose of the SoftS pin beyond soft-start?

The SoftS pin serves three critical functions: (1) sets soft-start ramp time via external capacitor, (2) defines blanking window duration to suppress false overcurrent trips during high-load transients, and (3) controls frequency jitter period to reduce EMI. All three are adjusted with a single capacitor - eliminating need for separate RC networks.

Does ICE3B0365JFKLA1 require an external startup resistor?

No. The device integrates a switchable 1.05mA startup cell connected directly to the Drain pin, which charges the VCC capacitor until the 18V UVLO threshold is reached. Once active, the startup cell disables automatically - removing the external resistor and reducing light-load power loss.

How does active burst mode differ from traditional burst mode?

Unlike conventional burst mode that disables the controller entirely, ICE3B0365JFKLA1's active burst mode keeps the internal comparator and feedback path fully operational. This enables real-time optocoupler control, immediate load-jump response without output voltage dropout, and <1% output ripple - all while achieving <100mW standby power.

Can ICE3B0365JFKLA1 be used in continuous conduction mode (CCM) flyback designs?

Yes. Its 75% maximum duty cycle, precise ±5% current limiting, and propagation delay compensation support both DCM and CCM flyback topologies. For CCM operation, ensure transformer design accounts for peak primary current at minimum input voltage (85VAC) and full load - verified using the datasheet's current limit equations.