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

Infineon Technologies ICE3DS01LG

Name: ICE3DS01LG
Brand: Infineon Technologies
SKU: ICE3DS01LG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3DS01LG

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ICE3DS01LG.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DSO

Quantity:: RFQ Add To RFQ list

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Inventory:1,738

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Product details

Overview

ICE3DS01LG from Infineon Technologies is an off-line SMPS current-mode PWM controller IC with integrated 500 V startup cell, fixed 110 kHz switching frequency, ±5 % peak current limit tolerance, and active burst mode enabling <100 mW standby power in AC/DC adapters for consumer electronics.

For engineers reviewing the ICE3DS01LG datasheet, ICE3DS01LG pinout, ICE3DS01LG application, or ICE3DS01LG equivalent, key selection considerations include its HV-startup capability eliminating external startup resistors, latched-off protection for overtemperature/overvoltage/short-winding faults, and soft-start + blanking window adjustment via single external capacitor on SoftS pin.

Technical Context

The ICE3DS01LG implements a current-mode control architecture with internal oscillator (110 kHz), leading-edge blanking (220 ns), propagation-delay compensation, and precise peak-current sensing referenced to 0.85 V threshold. Its control unit integrates active burst mode triggered by FB voltage and auto-restart mode for open-loop or overload conditions.

Protection logic includes latched-off shutdown for thermal (>140 °C), overvoltage (V_VCC > 21 V), and short-winding detection - requiring AC mains disconnection for reset - plus undervoltage lockout (turn-on at 15 V, turn-off at 8.5 V) and internal 500 V HV startup cell that disables automatically once V_VCC reaches regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	Fixed 110 kHz - enables compact transformer design and predictable EMI profile without external timing components.
Startup Voltage Rating	Integrated 500 V HV input - eliminates external high-voltage startup resistor and associated power loss in universal-input SMPS.
Current Limit Threshold	0.85 V ±5 % - ensures accurate, stable power limiting across line/load/temperature, reducing transformer and diode oversizing.
Standby Power	<100 mW at no load - achieved via active burst mode with continuous feedback control, minimizing output ripple (<1 %) during light-load operation.
Duty Cycle Limit	Max 72 % - constrains maximum on-time to prevent transformer saturation and ensure safe operation under transient overloads.
V_CC Operating Range	8.5 V to 21 V - supports wide-range auxiliary supply designs with robust undervoltage lockout (15 V turn-on, 8.5 V turn-off).
Leading Edge Blanking	220 ns - suppresses gate-drive spike-induced false triggering during MOSFET turn-on, improving noise immunity.

Pinout & Package

ICE3DS01LG is housed in PG-DSO-8-8 (RoHS-compliant, lead-free plating), an 8-pin surface-mount SOIC package with exposed pad for thermal enhancement. Pin 6 is internally not connected (N.C.).

Pin/Terminal	Circuit Role	Design Meaning
1 (SoftS)	Soft-start & blanking control	External capacitor sets soft-start time and adjustable blanking window duration for high-load-jump immunity.
2 (FB)	Feedback input	Regulates output voltage via optocoupler; controls active burst mode entry/exit and PWM duty cycle.
3 (CS)	Current sense input	Senses source voltage of external MOSFET; triggers immediate gate turn-off at 0.85 V threshold for cycle-by-cycle current limiting.
4 (Gate)	Driver output	Push-pull gate driver capable of driving standard 650 V PowerMOSFETs directly; optimized for low EMI.
5 (HV)	High-voltage startup input	Direct connection to rectified DC bus (up to 500 V); powers internal startup cell until V_VCC reaches 15 V.
6 (N.C.)	No connection	Internally unconnected; must remain floating - no external tie or pull-up/down required.
7 (VCC)	Controller supply	Powered by auxiliary winding after startup; regulated between 8.5–21 V; UVLO prevents operation outside safe range.
8 (GND)	Signal ground reference	Common return for internal bias, comparators, and gate driver; requires low-impedance PCB layout to minimize noise coupling.

Key Features

Feature	Design Value
Active Burst Mode	Enables continuous feedback-controlled operation at light load with immediate response to load jumps and <1 % output ripple - no blackouts or regulation loss.
Latched Off Protection	Hard shutdown for catastrophic faults (T_j >140 °C, V_VCC >21 V, short winding); requires AC disconnect to reset - enhances system safety and reliability.
Integrated HV Startup Cell	500 V-rated internal current source (1.05 mA) eliminates external startup resistor, reducing BOM count and improving light-load efficiency.
Adjustable Blanking Window	Single external capacitor on SoftS pin sets both soft-start time and blanking duration - prevents false overload detection during high dI/dt transients.
Precision Current Limiting	±5 % overall tolerance on 0.85 V threshold with propagation-delay compensation - ensures consistent power limiting across input voltage range (85–270 VAC).

Applications

AC/DC Adapter for Smartphones

USB-C PD Wall Charger

Use Scenario: Universal-input 5 V/3 A adapter operating across 85–270 VAC with strict EU CoC Tier 2 standby power requirements.

IC Role / Device Role / Timing Role: Primary-side current-mode PWM controller managing gate drive, current sensing, and burst-mode transitions via FB signal.

Use Value: Active burst mode achieves <75 mW no-load consumption while maintaining fast load-step response and minimal output ripple - meeting regulatory and user-experience targets.

Use Scenario: Multi-output 20 W USB-C charger with constant-voltage/constant-current regulation and dynamic load switching.

IC Role / Device Role / Timing Role: Off-line SMPS controller providing precise peak-current limiting, latched-off protection against winding shorts, and soft-start sequencing.

Use Value: Integrated 500 V HV startup and auto-restart mode enable reliable cold-start and fault recovery without auxiliary circuitry - reducing component count and board area.

LCD Monitor Power Supply

Set-Top Box Standby Converter

Use Scenario: 12 V/2 A auxiliary supply for LCD backlight and logic rails, requiring high reliability and thermal robustness.

IC Role / Device Role / Timing Role: Primary-side controller implementing thermal shutdown (latched off at T_j >140 °C) and overvoltage protection on V_VCC.

Use Value: Latched-off mode prevents thermal runaway during sustained overload, while propagation-delay compensation maintains consistent power limit across 85–270 VAC input range.

Use Scenario: Dual-rail (3.3 V/5 V) standby converter powering remote-control receiver and memory retention circuits.

IC Role / Device Role / Timing Role: Low-power PWM controller operating in active burst mode with feedback-controlled duty cycling and soft-start initialization.

Use Value: Single-capacitor SoftS configuration enables simultaneous soft-start timing and blanking window tuning - simplifying design validation and reducing debug cycles.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE3DS01L	Same die, PG-DIP-8-6 through-hole package; pins 4 and 5 internally shorted; no N.C. pin.	Requires through-hole assembly; less suitable for automated SMT lines; identical electrical behavior and protection features.	Select ICE3DS01L only when legacy DIP layout or manual assembly is mandated; otherwise ICE3DS01LG offers superior manufacturability.
ICE2DS02G	Higher 650 V startup rating; 65 kHz switching frequency; different blanking and burst-mode thresholds; no integrated RC filter in FB path.	Targeted for higher-power (>30 W) applications; lacks ICE3DS01LG's sub-100 mW standby capability and FB-path RC integration.	Choose ICE2DS02G only for designs needing higher HV margin or lower switching losses; not drop-in compatible due to frequency and protection timing differences.

Compared with ICE3DS01L and ICE2DS02G, the ICE3DS01LG uniquely combines RoHS-compliant DSO-8 packaging, 500 V HV startup, 110 kHz fixed frequency, and active burst mode delivering <100 mW standby - making it optimal for cost-sensitive, high-volume, low-power AC/DC adapters where SMT yield and regulatory compliance are critical.

Availability

ICE3DS01LG is available at Aetrix Electronics and suitable for AC/DC adapters, USB-C chargers, and LCD monitor auxiliary supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE3DS01LG 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 ICE3DS01LG belongs to Infineon's CoolSET™ F3 family - designed specifically for highly integrated, low-standby-power off-line SMPS controllers targeting consumer electronics power supplies.

FAQ

What is the purpose of the N.C. pin on ICE3DS01LG?

Pin 6 is internally not connected and must remain unconnected on the PCB. It serves no electrical function and is a mechanical placeholder for package compatibility with other variants in the ICE3DSxx family. Connecting it to any net may cause unpredictable behavior or damage.

How does the integrated 500 V startup cell eliminate the need for an external resistor?

The HV pin connects directly to the rectified bulk capacitor. An internal 500 V-rated current source (1.05 mA) charges the VCC capacitor until 15 V is reached, then shuts off automatically. This removes the power loss, heat generation, and reliability risk associated with high-value external startup resistors.

Can ICE3DS01LG operate without an optocoupler in the feedback loop?

No - the FB pin requires a regulated feedback signal from the secondary side, typically via an optocoupler and TL431 shunt regulator. The IC uses this signal for both PWM duty control and active burst mode activation; open-loop operation triggers auto-restart mode and prevents stable regulation.

What happens during the adjustable blanking window set by the SoftS capacitor?

During the blanking window (determined by SoftS capacitor value), the CS comparator is disabled to prevent false triggering from MOSFET switching spikes. This allows high dI/dt load steps without unintended current-limit trips or auto-restart entries - enhancing transient robustness without additional components.

ICE3DS01LG Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolSET®F3

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Isolation:: Isolated

Internal Switch(s):: No

Voltage - Breakdown:: -

Topology:: Flyback

Voltage - Start Up:: 15 V

Voltage - Supply (Vcc/Vdd):: 8.5V ~ 20V

Duty Cycle:: 72%

Frequency - Switching:: 110kHz

Power (Watts):: -

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-DSO-8

Mounting Type:: Surface Mount

ICE3DS01LG FAQ

1.How can I place an order for ICE3DS01LG through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3DS01LG 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 ICE3DS01LG reliable?

The price and inventory of ICE3DS01LG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3DS01LG is usually 5 days.

3.What payment methods are accepted for ICE3DS01LG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3DS01LG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3DS01LG?

ICE3DS01LG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3DS01LG 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 ICE3DS01LG?

For technical support, including ICE3DS01LG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3DS01LG requirements.

6.How does Aetrix verify that ICE3DS01LG is sourced from the original manufacturer or authorized distributors?

All ICE3DS01LG 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 ICE3DS01LG meets industry standards.

7.What is the process for return or replacement of ICE3DS01LG?

All ICE3DS01LG units undergo pre-shipment inspection (PSI). If there is an issue with ICE3DS01LG, 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 ICE3DS01LG part is unused and in its original packaging.

Return procedure for ICE3DS01LG:

1.Submit a request within 90 days.

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

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