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

Infineon Technologies ICE3B0365JZ

Name: ICE3B0365JZ
Brand: Infineon Technologies
SKU: ICE3B0365JZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3B0365JZ

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

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

Datasheet:: ICE3B0365JZ.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICE3B0365JZ from Infineon Technologies is an off-line SMPS current-mode controller IC integrating a 650V CoolMOS® power transistor and startup cell in a single PG-DIP-8 package, operating at 67 kHz with 75% max duty cycle and ≤±5% current limit tolerance. It delivers 6.45W typical input power at 230VAC ±15%, supports active burst mode for <100mW standby, and is designed for low-cost AC/DC adapters and auxiliary power supplies.

For engineers reviewing the ICE3B0365JZ datasheet, ICE3B0365JZ pinout, ICE3B0365JZ application, or ICE3B0365JZ equivalent, key selection criteria include integrated 650V drain-source rating, jitter-enabled EMI reduction, soft-start/blanking window adjustability via external capacitor, and auto-restart protection modes for overload, overvoltage, overtemperature, and VCC undervoltage conditions.

Technical Context

The ICE3B0365JZ implements BiCMOS-based current-mode PWM control with fixed 67 kHz oscillator frequency and internal leading-edge blanking. Its integrated CoolMOS® enables direct high-voltage drain connection (650V), while the switchable startup cell eliminates external startup resistors and reduces light-load losses.

Active burst mode is controlled by the FB pin and maintains regulation via optocoupler feedback even at no load, delivering <1% output voltage ripple. Protection logic includes auto-restart on VCC undervoltage (10.3V cutoff), overtemperature, open-loop, and overcurrent events - all managed without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650V - Enables direct connection to universal AC input (85–265VAC) without external HV starter or snubber scaling
f_OSC	67 kHz - Fixed switching frequency simplifies EMI filter design and transformer core selection
Max Duty Cycle	75% - Supports wide input voltage range while maintaining stable peak current limiting
Current Limit Tolerance	≤ ±5% - Ensures consistent power delivery across temperature and process variation, reducing transformer oversizing
Standby Power	< 100 mW @ 270VAC - Achieved via active burst mode with continuous feedback control, eliminating blackouts during load jumps
V_CC Range	10.3 V to 26 V - Accommodates CV/CC secondary-side regulation with auxiliary winding voltage fluctuations
Startup Current	1.05 mA - Integrated startup cell draws from Drain pin, removing need for external high-voltage resistor

Pinout & Package

ICE3B0365JZ is housed in a PG-DIP-8 package with creepage/clearance optimized for reinforced insulation in AC/DC converters. Pins 4 and 5 are internally shorted as dual drain connections; Pin 6 is not connected.

Pin/Terminal	Circuit Role	Design Meaning
1 SoftS	Soft-start timing / Auto-restart trigger / Frequency jitter control	External capacitor sets soft-start ramp, blanking window duration, and jitter period - unifies three functions into one passive component
2 FB	Feedback input	Accepts optocoupler signal to regulate output voltage and enter/exit active burst mode; clamped at 3.61V for overvoltage detection
3 CS	Current sense input	Monitors source voltage of integrated CoolMOS®; triggers immediate gate shutdown when threshold reached for precise cycle-by-cycle current limiting
4 & 5 Drain	High-side power switch drain	Dual pins reduce trace inductance and thermal resistance; rated for 650V avalanche rugged operation up to 110°C junction
6 N.C.	No connection	Internally isolated; must remain unconnected in PCB layout to avoid parasitic coupling
7 VCC	Controller supply	Powered by auxiliary winding; UVLO activates at 10.3V (off) and 18V (on); bias current drops to 500µA in burst mode
8 GND	Signal and power ground reference	Common return for CS sensing, FB comparator, and gate driver; requires low-inductance layout to maintain current-sense accuracy

Key Features

Feature	Design Value
Integrated 650V CoolMOS®	Eliminates external HV MOSFET and gate driver, reducing BOM count and layout complexity for sub-10W adapters
Active Burst Mode	Maintains closed-loop regulation at no load via same optocoupler used in PWM mode, enabling immediate response to load steps without output dropout
Adjustable Blanking Window	Set by SoftS capacitor to suppress false overcurrent trips during transient load surges - no extra RC network required
Frequency Jittering	Spreads spectral energy around 67 kHz fundamental to lower peak EMI emissions without altering average switching frequency
Auto-Restart Protection	Enters safe low-power state on VCC UVLO, overtemperature, open-loop, or overload - recovers automatically after fault removal

Applications

USB Wall Adapters

Smart Home Power Supplies

Use Scenario: Compact 5V/1A AC/DC adapter for USB-charged IoT sensors and controllers operating from universal mains input.

IC Role / Device Role / Timing Role: Primary-side controller managing PWM regulation, burst-mode standby, and integrated HV switching in flyback topology.

Use Value: Achieves <100mW no-load consumption and passes CoC Tier 2 efficiency requirements without auxiliary bias winding or external HV start-up circuitry.

Use Scenario: Low-power auxiliary supply for Zigbee/Z-Wave gateways requiring reliable 3.3V/50mA rail under variable load and ambient temperature.

IC Role / Device Role / Timing Role: Self-contained current-mode controller providing regulated output with auto-restart protection against brownout and overtemperature faults.

Use Value: Reduces bill-of-materials by integrating 650V switch and startup cell, enabling single-layer PCB layout with minimal heatsinking.

LED Driver Auxiliary Supply

Industrial Sensor Interface Power

Use Scenario: Standby power source for constant-current LED driver ICs in smart lighting systems requiring fast wake-up from deep sleep.

IC Role / Device Role / Timing Role: Off-line controller delivering stable 12V/20mA auxiliary rail with jittered 67kHz switching to minimize conducted EMI into analog dimming circuits.

Use Value: Active burst mode ensures <1% output ripple during light-load transitions, preserving dimming linearity and flicker-free operation.

Use Scenario: Isolated 5V/100mA supply for RS-485 transceivers and microcontrollers in factory automation nodes exposed to 85–265VAC mains.

IC Role / Device Role / Timing Role: Reinforced-insulation flyback controller with integrated 650V drain and auto-restart on overvoltage/overload for field-deployed reliability.

Use Value: Dual drain pins (Pins 4 & 5) improve thermal dissipation and reduce common-mode noise coupling into sensitive communication lines.

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
ICE3B0565J	Lower R_DS(on) (4.70W vs. 6.45W input power rating at 230VAC), higher output power capability	Targeted at 12–15W adapters; requires larger transformer due to higher peak current handling	Select when >8W continuous output is needed and thermal margin allows higher conduction loss
ICE3B1565J	Higher R_DS(on) (1.70W input power rating), optimized for ultra-low standby and cost-sensitive <5W designs	Better suited for battery charger standby rails where light-load efficiency dominates full-load performance	Prefer for sub-5W applications prioritizing <30mW no-load consumption and minimal BOM cost

Compared with ICE3B0565J and ICE3B1565J, the ICE3B0365JZ balances mid-range power delivery (6.45W), robust 650V integration, and jitter-assisted EMI compliance - making it optimal for 5–8W universal-input adapters where size, cost, and regulatory test margin are jointly constrained.

Availability

ICE3B0365JZ is available at Aetrix Electronics and suitable for USB wall adapters, smart home power supplies, and LED driver auxiliary supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE3B0365JZ 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 switches and controllers for cost-sensitive, low-to-mid power AC/DC conversion - designed specifically to eliminate external startup components and simplify flyback adapter design.

FAQ

What is the maximum recommended continuous output power for ICE3B0365JZ in a standard DIP-8 flyback design?

The ICE3B0365JZ is rated for 6.45W typical input power at 230VAC ±15% with Ta=75°C and no copper heatsink area. In practical flyback designs using standard FR4 PCB with 2 oz copper and minimal thermal relief, continuous output power is limited to 5–6W to maintain Tj ≤125°C. Derating is required above 50°C ambient or with enclosed enclosures lacking airflow.

Does ICE3B0365JZ require an external startup resistor?

No. ICE3B0365JZ integrates a switchable high-voltage startup cell connected directly to the Drain pin, delivering 1.05 mA charging current to the VCC capacitor. This eliminates the need for an external high-voltage resistor, reducing power loss during startup and improving light-load efficiency.

How does the SoftS pin implement both soft-start and blanking window adjustment?

The SoftS pin uses a single external capacitor to set three functions: soft-start ramp time (via internal current source), blanking window duration (to disable overload detection during load transients), and frequency jitter period. The capacitor's value linearly scales all three parameters - e.g., a 100 nF capacitor yields ~10 ms soft-start and ~2 µs blanking - verified in Section 1.2 of the datasheet.

Can ICE3B0365JZ be used in quasi-resonant (QR) or variable-frequency topologies?

No. ICE3B0365JZ operates exclusively in fixed-frequency current-mode PWM mode at 67 kHz. It lacks zero-voltage switching (ZVS) detection, variable frequency control, or demagnetization sensing circuitry. Its oscillator and protection logic are hard-coded for constant-frequency operation, making it unsuitable for QR or frequency-modulated topologies.

ICE3B0365JZ Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™F3

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

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 650V

Topology:: Flyback

Voltage - Start Up:: 18 V

Voltage - Supply (Vcc/Vdd):: 10.3V ~ 26V

Duty Cycle:: 75%

Frequency - Switching:: 67kHz

Power (Watts):: 22 W

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

Control Features:: Soft Start

Operating Temperature:: -25°C ~ 130°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DIP-8

Mounting Type:: Through Hole

ICE3B0365JZ FAQ

1.How can I place an order for ICE3B0365JZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3B0365JZ 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 ICE3B0365JZ reliable?

The price and inventory of ICE3B0365JZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3B0365JZ is usually 5 days.

3.What payment methods are accepted for ICE3B0365JZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3B0365JZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3B0365JZ?

ICE3B0365JZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3B0365JZ 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 ICE3B0365JZ?

For technical support, including ICE3B0365JZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3B0365JZ requirements.

6.How does Aetrix verify that ICE3B0365JZ is sourced from the original manufacturer or authorized distributors?

All ICE3B0365JZ 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 ICE3B0365JZ meets industry standards.

7.What is the process for return or replacement of ICE3B0365JZ?

All ICE3B0365JZ units undergo pre-shipment inspection (PSI). If there is an issue with ICE3B0365JZ, 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 ICE3B0365JZ part is unused and in its original packaging.

Return procedure for ICE3B0365JZ:

1.Submit a request within 90 days.

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

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