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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

Infineon Technologies ICE2A365FKLA1

Name: ICE2A365FKLA1
Brand: Infineon Technologies
SKU: ICE2A365FKLA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE2A365FKLA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: ICE2A365FKLA1.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,244

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Product details

Overview

ICE2A365FKLA1 from Infineon Technologies is an off-line SMPS current mode controller with integrated 650V CoolMOS™, designed for primary-side regulation in AC/DC flyback converters. It delivers 67W output power at 230VAC ±15%, operates at 100kHz switching frequency, features 0.45Ω R_DS(on), and supports low-power standby mode compliant with European Commission requirements.

For engineers reviewing the ICE2A365FKLA1 datasheet, ICE2A365FKLA1 pinout, ICE2A365FKLA1 application, or ICE2A365FKLA1 equivalent, key selection criteria include integrated high-voltage MOSFET capability, precise ±5% peak current limiting tolerance, auto-restart protection architecture, and DIP-8 package compatibility with creepage-enhanced layout.

Technical Context

The ICE2A365FKLA1 implements a current-mode PWM control architecture with internal leading-edge blanking and propagation delay compensation to ensure stable cycle-by-cycle current sensing. Its oscillator supports fixed 100kHz operation with frequency reduction to 20–21.5kHz in standby to suppress audible noise while maintaining output regulation.

Protection is managed by a dedicated unit enabling auto-restart on overload, open-loop, overvoltage, and thermal shutdown conditions. The integrated CoolMOS™ drain is isolated in TO220 variants but shares common-source topology in DIP-8, with Isense directly monitoring source current via external sense resistor.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650V - Enables direct rectified mains connection up to 265VAC without external HV MOSFET.
Switching Frequency	100kHz - Fixed frequency enables predictable EMI filter design and transformer sizing.
R_DS(on)	0.45Ω @ 25°C - Delivers 45W continuous power at T_a=75°C with 6cm² PCB copper area.
Peak Current Limit Tolerance	±5% overall - Reduces transformer and secondary diode derating, lowering BOM cost.
Standby Frequency Range	20–21.5kHz - Avoids audible noise while sustaining regulated output during no-load conditions.
V_CC Operating Range	8.5–21V - Supports wide-range auxiliary supply; disables driver above 16.5V during startup for overvoltage protection.
Max Duty Cycle	72% - Limits conduction time to maintain stability under transient load and input variations.

Pinout & Package

ICE2A365FKLA1 is housed in PG-DIP-8 package with creepage-enhanced layout and no heat sink required. Pin 4 and Pin 5 are both connected to the integrated CoolMOS™ drain; Pin 6 is not connected (N.C.).

Pin/Terminal	Circuit Role	Design Meaning
1 SoftS	Soft-start & Auto-restart control	External capacitor sets startup ramp time; also triggers auto-restart timing after fault detection.
2 FB	Feedback input	Receives optocoupler signal to regulate output voltage via PWM duty cycle adjustment.
3 Isense	Current sense input	Monitors voltage across external source resistor to enforce cycle-by-cycle peak current limit.
4 Drain	CoolMOS™ drain terminal	High-side switch node connected to primary winding; rated for 650V avalanche ruggedness.
5 Drain	CoolMOS™ drain terminal	Second drain bond wire - parallel path to reduce conduction loss and improve thermal distribution.
6 N.C.	No connection	Internally unconnected; must remain floating per design - no PCB trace or component attachment.
7 VCC	Controller supply	Accepts auxiliary winding-derived DC; includes UVLO (8.5V) and overvoltage cutoff (16.5V).
8 GND	Controller ground	Primary-side reference for all analog and logic blocks; separate from power ground plane per layout guidelines.

Key Features

Feature	Design Value
Integrated 650V CoolMOS™	Eliminates discrete HV MOSFET and gate driver, reducing component count and layout complexity in <65W flyback designs.
Precise ±5% current limiting	Enables smaller transformer core and lower-rated secondary diode without compromising safety margin.
Auto-restart protection	Isolates faults by cycling power delivery instead of latching off - maintains system observability during debug and field operation.
Frequency reduction in standby	Lowers switching losses to meet <300mW no-load consumption targets without auxiliary bias winding redesign.
Enhanced creepage distance	Meets reinforced insulation requirements for Class II appliances without additional slotting or spacing on PCB.

Applications

Smart Home Power Supply

Industrial Sensor Transmitter

Use Scenario: Compact 24V/1A isolated flyback supplying MCU, radio, and analog front-end in battery-less Zigbee/Z-Wave sensors.

IC Role / Device Role / Timing Role: Primary-side controller with integrated HV switch and current-mode regulation for constant-voltage output.

Use Value: Eliminates external MOSFET and reduces bill-of-materials by 4 components versus discrete controller + FET solutions.

Use Scenario: 5V/2A auxiliary supply powering 4–20mA loop transmitter and isolation amplifier in hazardous-area process instrumentation.

IC Role / Device Role / Timing Role: Safety-certified off-line controller delivering regulated output with reinforced creepage and auto-restart fault recovery.

Use Value: Meets IEC 61000-4-5 surge immunity and EN 62368-1 insulation requirements without external creepage extenders.

USB-C Wall Adapter

LED Driver for Commercial Lighting

Use Scenario: 18W single-output adapter supporting USB PD 3.0 negotiation with variable output voltage (5–9V).

IC Role / Device Role / Timing Role: Constant-voltage controller with feedback path adapted for secondary-side digital communication via optocoupler.

Use Value: 100kHz operation enables compact planar transformer; ±5% current limit ensures consistent CC/CV transition accuracy.

Use Scenario: 42V/350mA constant-current LED driver for recessed downlights operating from universal AC input.

IC Role / Device Role / Timing Role: Flyback controller configured in primary-sensing CC mode using auxiliary winding feedback and Isense-based current regulation.

Use Value: Integrated CoolMOS™ withstands 265VAC surges; frequency reduction minimizes audible buzz during dimming standby.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE2A365Z	PG-DIP-7-1 package; single drain pin; no Pin 6 (N.C.)	Same electrical specs but reduced creepage vs. DIP-8; requires different PCB footprint	Select when board space is constrained and creepage >6mm is not required.
ICE2B365	67kHz switching frequency; identical R_DS(on), power rating, and protection features	Lower EMI generation; higher transformer size due to reduced frequency	Prefer for EMI-sensitive environments where transformer volume is less critical than conducted emissions.

Compared with ICE2A365Z and ICE2B365, ICE2A365FKLA1 offers optimal balance of high-frequency efficiency, creepage compliance, and thermal performance in DIP-8 format-making it preferred for space-constrained yet safety-critical consumer and industrial adapters.

Availability

ICE2A365FKLA1 is available at Aetrix Electronics and suitable for smart home power supplies, industrial sensor transmitters, and USB-C wall adapters requiring stable component supply, long-term lifecycle support, and full traceability.

Supply support for ICE2A365FKLA1 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™-F2 product line was engineered specifically for cost-sensitive, high-efficiency offline SMPS applications demanding integrated HV switching, robust protection, and regulatory-compliant standby performance.

FAQ

What is the maximum continuous output power achievable with ICE2A365FKLA1 in open-frame design?

At T_a = 75°C, T_j = 125°C, and with 6 cm² copper area on PCB, ICE2A365FKLA1 delivers 45W continuous output power under 230VAC ±15% input. In open-frame configurations with R_thCA = 2.7 K/W, practical continuous power remains at 45W - verified per datasheet Table 1 and thermal characterization on page 20.

Does ICE2A365FKLA1 require an external startup resistor?

Yes - an external high-voltage startup resistor (typically 1–2 MΩ) is required between rectified mains and VCC to charge the VCC capacitor until auxiliary winding begins supplying power. This is mandatory for initial IC activation and is specified in Figure 10 of the datasheet.

How is the peak current limit adjusted on ICE2A365FKLA1?

Peak current limit is set by the external sense resistor (R_sense) between Isense and GND. Threshold voltage is 1.0V ±5%; thus I_limit = 1.0V / R_sense. The ±5% total tolerance includes R_sense tolerance, temperature drift, and internal comparator variation - confirmed in Section 4.4.5.

Can ICE2A365FKLA1 be used in quasi-resonant (QR) flyback topologies?

No - ICE2A365FKLA1 operates in fixed-frequency current-mode PWM only. It lacks valley-switching detection circuitry or variable-frequency control needed for QR operation. For QR applications, Infineon recommends the ICE5QSBGx series or standalone QR controllers paired with discrete CoolMOS™.

ICE2A365FKLA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolSET®F2

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 650V

Topology:: Flyback

Voltage - Start Up:: 13.5 V

Voltage - Supply (Vcc/Vdd):: 8.5V ~ 21V

Duty Cycle:: 72%

Frequency - Switching:: 100kHz

Power (Watts):: 67 W

Fault Protection:: Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage

Control Features:: Soft Start

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DIP-8-4

Mounting Type:: Through Hole

ICE2A365FKLA1 FAQ

1.How can I place an order for ICE2A365FKLA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE2A365FKLA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ICE2A365FKLA1 reliable?

The price and inventory of ICE2A365FKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2A365FKLA1 is usually 5 days.

3.What payment methods are accepted for ICE2A365FKLA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2A365FKLA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE2A365FKLA1?

ICE2A365FKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE2A365FKLA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ICE2A365FKLA1?

For technical support, including ICE2A365FKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2A365FKLA1 requirements.

6.How does Aetrix verify that ICE2A365FKLA1 is sourced from the original manufacturer or authorized distributors?

All ICE2A365FKLA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ICE2A365FKLA1 meets industry standards.

7.What is the process for return or replacement of ICE2A365FKLA1?

All ICE2A365FKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2A365FKLA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ICE2A365FKLA1 part is unused and in its original packaging.

Return procedure for ICE2A365FKLA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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