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

Infineon Technologies ICE3AR4780JZXKLA1

Name: ICE3AR4780JZXKLA1
Brand: Infineon Technologies
SKU: ICE3AR4780JZXKLA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3AR4780JZXKLA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm), 7 Leads

Datasheet:: ICE3AR4780JZXKLA1.pdf

Description:: IC OFFLINE SWITCH FLYBACK 7DIP

Quantity:: RFQ Add To RFQ list

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Inventory:1,995

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Product details

Overview

ICE3AR4780JZXKLA1 from Infineon Technologies is an integrated off-line SMPS current-mode controller with built-in 800V avalanche-rugged CoolMOS® and startup cell in PG-DIP-7 package, operating at a fixed 100kHz switching frequency with jittering, delivering up to 31W input power at 230VAC ±15%, and featuring active burst mode for <100mW standby power in auxiliary power supplies for PCs and servers.

For engineers reviewing the ICE3AR4780JZXKLA1 datasheet, ICE3AR4780JZXKLA1 pinout, ICE3AR4780JZXKLA1 application, or ICE3AR4780JZXKLA1 equivalent, key selection considerations include its integrated 800V MOSFET voltage margin, adjustable brownout threshold, selectable burst entry/exit levels, propagation delay compensation for accurate power limiting, and auto-restart protection across overtemperature, overload, VCC OVP/UVP, and open-loop faults.

Technical Context

The ICE3AR4780JZXKLA1 implements a current-mode PWM architecture with cycle-by-cycle peak current limiting (±5% tolerance), patented propagation delay compensation for consistent power limit across line voltages, and a dedicated BBA pin enabling simultaneous brownout detection, extended blanking time control via external capacitor, and external auto-restart enable via sub-0.4V logic assertion.

Its BiCMOS process enables 10.5–25V VCC operation range, 10ms built-in soft-start, 20ms base blanking time extendable externally, and active burst mode with narrowed 0.3V feedback swing-reducing output ripple by 40% versus prior F3R generations-while frequency jittering and soft gate drive (50Ω turn-on resistor) suppress EMI.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	800V - Enables safe operation under 380VDC rectified mains transients without derating.
f_SW	100kHz fixed with jitter - Reduces EMI peak emissions while maintaining predictable transformer design.
R_DS(on)	4.7Ω typ @ 25°C - Sets conduction loss and thermal budget for ≤31W continuous input power at 50°C ambient.
Standby Power	<100mW - Achieved via active burst mode, critical for Energy Star Level VI and EU CoC Tier 2 compliance.
Current Limit Tolerance	±5% - Ensures repeatable overcurrent protection across temperature and manufacturing spread.
Brownout Threshold	Adjustable via external resistor divider - Prevents unstable regulation during brownout events without system shutdown.
OTP Hysteresis	50°C - Guarantees robust thermal recovery after fault clearing without oscillation.

Pinout & Package

Package: PG-DIP-7 (Plastic Dual-In-Line Package, 7-pin, standard DIP footprint with pin 6 omitted).

Pin/Terminal	Circuit Role	Design Meaning
1 (BBA)	Brownout / Blanking Extension / Auto-Restart Enable	Single pin controls three functions: brownout shutdown, external capacitor-based blanking extension for overload, and forced auto-restart when pulled <0.4V.
2 (FBB)	Feedback Input / Burst Mode Control	Regulates output voltage via optocoupler feedback; also sets burst entry/exit power level via external resistor.
3 (CS)	Current Sense Input	Monitors shunt voltage on CoolMOS® source to trigger cycle-by-cycle current limiting and PWM duty control.
4 (n.c.)	No Connection	Internally unconnected; must remain floating per datasheet.
5 (Drain)	CoolMOS® Drain Terminal	High-voltage power node connected directly to rectified AC input; rated for 800V avalanche energy.
7 (VCC)	Controller Supply Input	Accepts 10.5–25V DC; powered initially by internal startup cell, then sustained by auxiliary winding.
8 (GND)	Power Ground Reference	Common return for control circuitry, current sense, and gate driver; requires low-inductance layout to CS path.

Key Features

Feature	Design Value
Integrated 800V CoolMOS® with startup cell	Eliminates external HV startup resistor and discrete MOSFET, reducing BOM count and PCB area in offline flyback designs.
Active Burst Mode with selectable thresholds	Enables optimization of light-load efficiency and audible noise by tuning burst entry/exit power points per application.
Propagation delay compensation (patented)	Maintains identical peak power limit at both high-line (265VAC) and low-line (85VAC), improving safety margin consistency.
Adjustable brownout feature	Prevents erratic regulation during undervoltage grid conditions without disabling full system functionality.
Soft gate drive with 50Ω turn-on resistor	Reduces EMI and dV/dt stress on CoolMOS® while preserving switching speed for efficiency.

Applications

PC Auxiliary Power Supply

DVD/Blu-ray Player SMPS

Use Scenario: Provides +5VSB and +12V standby rails for ATX motherboards and peripheral wake-up logic.

IC Role / Device Role / Timing Role: Integrated controller/MOSFET delivers regulated outputs in flyback topology with burst mode for sub-100mW no-load consumption.

Use Value: Meets Energy Star Level VI standby requirements while eliminating external HV startup components and simplifying thermal design.

Use Scenario: Powers optical drive motor, laser diode bias, and digital logic in consumer disc players.

IC Role / Device Role / Timing Role: Primary-side regulated flyback controller with 100kHz jittered switching ensures low EMI in compact enclosures near sensitive analog circuits.

Use Value: 800V MOSFET withstands surge transients in unregulated AC inputs; adjustable brownout prevents dropout during brownouts common in residential grids.

Set-Top Box Power Supply

Server Standby Converter

Use Scenario: Generates isolated 3.3V/5V/12V rails for SoC, memory, and HDMI interface in cable/satellite receivers.

IC Role / Device Role / Timing Role: Current-mode controller with precise ±5% current limit ensures reliable short-circuit protection across wide input voltage range (85–265VAC).

Use Value: Built-in 20ms blanking time plus external extension handles brief load surges (e.g., tuner lock) without false triggering of protection.

Use Scenario: Delivers +3.3VSB and +5VSB to server management controllers (BMC), fans, and PCIe hot-plug logic during main PSU off-state.

IC Role / Device Role / Timing Role: High-voltage integrated solution supports redundant standby supplies with auto-restart on overtemperature and open-loop faults.

Use Value: 50°C OTP hysteresis ensures stable thermal recovery after transient overloads, preventing repeated cycling in densely packed server chassis.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE3BR4765JZ	650V integrated CoolMOS®, same DIP-7 package, 100kHz, but lacks adjustable brownout and burst level selection.	Suitable only for lower-input-voltage applications (≤230VAC nominal); not recommended where 800V margin is required for surge immunity.	Select ICE3BR4765JZ only if input voltage is strictly limited to ≤265VAC and brownout immunity is non-critical.
LD7575P	Standalone 650V PWM controller (no integrated MOSFET); requires external HV startup and discrete MOSFET; no burst mode.	Higher BOM cost and board area; lacks integrated protections like auto-restart and OTP hysteresis.	Choose LD7575P only when design requires independent optimization of controller and MOSFET, or when legacy compatibility mandates non-integrated architecture.

Compared with ICE3BR4765JZ and LD7575P, ICE3AR4780JZXKLA1 uniquely combines 800V ruggedness, adjustable brownout, selectable burst thresholds, and propagation delay compensation-enabling higher reliability in universal-input, low-power SMPS where surge immunity, standby efficiency, and consistent power limiting are mandatory.

Availability

ICE3AR4780JZXKLA1 is available at Aetrix Electronics and suitable for PC auxiliary power supplies, DVD/Blu-ray player SMPS, set-top box power supplies, and server standby converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ICE3AR4780JZXKLA1 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®-F3R80 product line-exemplified by ICE3AR4780JZXKLA1-is designed specifically for universal-input, low-power offline flyback converters demanding high-voltage margin, ultra-low standby power, and integrated protection in compact consumer and computing power supplies.

FAQ

What is the maximum continuous input power supported by ICE3AR4780JZXKLA1?

The ICE3AR4780JZXKLA1 supports up to 31W maximum input power at 230VAC ±15% with Ta=50°C and no copper heatsink area, based on its 4.7Ω R_DS(on) and thermal design limits. At 85–265VAC universal input, it delivers 20W continuously under the same conditions, as confirmed in the official Infineon datasheet revision 2.1a.

How does the BBA pin function in brownout mode versus auto-restart enable?

The BBA pin performs three distinct roles: brownout detection uses an internal comparator to halt switching when input-derived voltage drops below a user-adjustable threshold; auto-restart enable is triggered only when BBA is actively pulled below 0.4V (not just low-voltage condition); and blanking extension adds capacitance to ground to lengthen the 20ms default overload blanking window-each function operates independently per the datasheet's functional description.

Can ICE3AR4780JZXKLA1 replace ICE3BR4765JZ without circuit modification?

No-direct replacement is not possible without validation. While both use PG-DIP-7 and share pinout, ICE3AR4780JZXKLA1 has higher V_DS (800V vs. 650V), different brownout and burst control behavior, and revised internal thresholds. Layout changes may be needed for thermal management due to higher avalanche energy handling, and feedback network recalibration is required for burst level matching.

What is the purpose of the "n.c." pin (Pin 4) in the PG-DIP-7 package?

Pin 4 is explicitly designated "not connected" in the Infineon datasheet and must remain unconnected-neither tied to GND nor left floating with parasitic coupling. It is internally unbonded and serves no electrical function; soldering or routing to this pin risks compromising isolation integrity or inducing noise into adjacent pins (BBA and CS), violating the recommended PCB layout guidelines.

ICE3AR4780JZXKLA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™F3R

Package/Case:: 8-DIP (0.300", 7.62mm), 7 Leads

Packaging:: Tube

Product Status:: Active

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 800V

Topology:: Flyback

Voltage - Start Up:: 17 V

Voltage - Supply (Vcc/Vdd):: 10.5V ~ 27V

Duty Cycle:: 75%

Frequency - Switching:: 100kHz

Power (Watts):: 31 W

Fault Protection:: Over Load, Over Temperature, Over Voltage

Control Features:: -

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

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DIP-7-1

Mounting Type:: Through Hole

ICE3AR4780JZXKLA1 FAQ

1.How can I place an order for ICE3AR4780JZXKLA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3AR4780JZXKLA1 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 ICE3AR4780JZXKLA1 reliable?

The price and inventory of ICE3AR4780JZXKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3AR4780JZXKLA1 is usually 5 days.

3.What payment methods are accepted for ICE3AR4780JZXKLA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3AR4780JZXKLA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3AR4780JZXKLA1?

ICE3AR4780JZXKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3AR4780JZXKLA1 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 ICE3AR4780JZXKLA1?

For technical support, including ICE3AR4780JZXKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3AR4780JZXKLA1 requirements.

6.How does Aetrix verify that ICE3AR4780JZXKLA1 is sourced from the original manufacturer or authorized distributors?

All ICE3AR4780JZXKLA1 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 ICE3AR4780JZXKLA1 meets industry standards.

7.What is the process for return or replacement of ICE3AR4780JZXKLA1?

All ICE3AR4780JZXKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE3AR4780JZXKLA1, 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 ICE3AR4780JZXKLA1 part is unused and in its original packaging.

Return procedure for ICE3AR4780JZXKLA1:

1.Submit a request within 90 days.

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

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