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Infineon Technologies ICE3GS03LJGXUMA1
- Part No.:
- ICE3GS03LJGXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICE3GS03LJGXUMA1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
ICE3GS03LJGXUMA1 from Infineon Technologies is a current-mode PWM controller IC for off-line SMPS, featuring an integrated 500V startup cell, 130kHz fixed switching frequency, active burst mode (<100mW no-load standby), ±5% peak current limit tolerance, and dual protection modes (latch-off and auto-restart). It targets low-to-medium-power AC/DC adapters for DVD players, Blu-ray recorders, set-top boxes, and notebook chargers.
For engineers reviewing the ICE3GS03LJGXUMA1 datasheet, ICE3GS03LJGXUMA1 pinout, ICE3GS03LJGXUMA1 application, or ICE3GS03LJGXUMA1 equivalent, key selection criteria include its BiCMOS-based 10.5–25V VCC operating range, extendable blanking window via external capacitor on BL pin, frequency jitter for EMI reduction, and HV pin direct connection to bulk capacitor eliminating external startup resistor.
Technical Context
This controller implements improved current-mode control with propagation delay compensation to maintain stable output power across universal AC input (85–265VAC), and integrates leading-edge blanking plus an extendable 20ms blanking window (via BL pin capacitor) to suppress false overcurrent triggering during high-load transients.
The control unit combines active burst mode-enabling full optocoupler-based regulation at light load-with dual-protection architecture: latch-off for critical faults (overtemperature, overvoltage, short winding) and auto-restart for recoverable faults (overload, open-loop, VCC UVLO), both configurable via the BL pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 130kHz fixed - enables compact magnetics and predictable EMI profile without external timing components. |
| Startup Voltage | 500V integrated HV pin - eliminates external high-voltage startup resistor and reduces no-load losses. |
| VCC Operating Range | 10.5V to 25V - supports wide auxiliary supply design and improves system robustness under transient conditions. |
| Peak Current Limit Tolerance | ±5% overall - ensures precise power limiting across temperature and process variation, reducing transformer and diode oversizing. |
| Standby Power | <100mW at 265VAC no-load - meets stringent global energy efficiency standards (e.g., DOE Level VI, CoC Tier 2). |
| Protection Modes | Latch-off + Auto-restart - provides fail-safe shutdown for hazardous faults and graceful recovery for temporary overloads. |
| Blanking Window | 20ms base + extendable via BL capacitor - disables overload detection during high-current transients without external logic. |
Pinout & Package
ICE3GS03LJGXUMA1 is housed in a PG-DSO-8 package (8-pin, exposed pad, RoHS-compliant green mold compound), optimized for thermal performance and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BL | Extended blanking & latch enable | Configures blanking time extension (via external capacitor) and triggers hardware latch-off when pulled <0.33V. |
| 2 - FB | Feedback input | Primary regulation interface for optocoupler-coupled secondary-side voltage sensing; sole control signal in active burst mode. |
| 3 - CS | Current sense input | Detects MOSFET source current via sense resistor; triggers immediate gate turn-off at internal threshold for cycle-by-cycle protection. |
| 4 - Gate | Gate driver output | Drives external N-channel MOSFET with soft-gate modulation to reduce EMI and dV/dt stress. |
| 5 - HV | High-voltage input | Direct connection point to rectified bulk capacitor; powers internal 500V startup cell before VCC reaches UVLO threshold. |
| 6 - n.c. | No connect | Internally unconnected; must remain floating per datasheet - no external tie or routing. |
| 7 - VCC | Supply voltage | Power rail for internal circuitry; regulated by auxiliary winding or startup cell; operates from 10.5V to 25V. |
| 8 - GND | Signal ground | Reference node for all analog and digital blocks; requires low-impedance layout to minimize noise coupling into CS/FB paths. |
Key Features
| Feature | Design Value |
|---|---|
| Active Burst Mode | Enables full optocoupler feedback control at light load while achieving <100mW standby - no compromise on regulation accuracy. |
| BiCMOS Process Technology | Extends VCC range to 25V and reduces quiescent current - improves design margin for auxiliary supply variations and enhances light-load efficiency. |
| Frequency Jitter + Soft Gate Drive | Spreads spectral energy of switching harmonics and lowers dV/dt - reduces conducted and radiated EMI without external filters. |
| Propagation Delay Compensation | Maintains consistent output power limit across 85–265VAC input - eliminates need for transformer or diode derating in universal-input designs. |
| External Latch Enable via BL Pin | Allows system-level fault escalation (e.g., from microcontroller or thermal sensor) to force immediate, non-recoverable shutdown - enhances safety compliance. |
Applications
| DVD/Blu-ray Power Supply | Set-Top Box Adapter |
|---|---|
|
Use Scenario: AC/DC power conversion for optical disc drives requiring low-noise, low-standby operation and fast transient response during disc spin-up. IC Role / Device Role / Timing Role: Primary-side PWM controller managing MOSFET gate drive, current sensing, and optocoupler feedback in discontinuous conduction mode (DCM) flyback topology. Use Value: Active burst mode maintains <100mW standby while preserving tight output regulation; built-in blanking prevents false shutdown during motor surge currents. |
Use Scenario: Universal-input (85–265VAC) offline adapter powering digital video receivers with strict EMI limits and thermal constraints. IC Role / Device Role / Timing Role: Current-mode flyback controller implementing frequency jitter and soft gate drive to meet CISPR-22 Class B conducted/radiated emissions. Use Value: Integrated 500V HV pin eliminates startup resistor loss; propagation delay compensation ensures consistent power delivery across input range without transformer redesign. |
| Notebook Charger | Low-Cost SMPS for Consumer Electronics |
|
Use Scenario: Compact, cost-sensitive 19V/3.42A adapter meeting Energy Star 6.0 and USB PD compatibility requirements. IC Role / Device Role / Timing Role: Fixed-frequency (130kHz) PWM controller enabling small transformer size and simplified EMI filter design in quasi-resonant flyback implementation. Use Value: BiCMOS technology extends VCC range to 25V - accommodates auxiliary winding fluctuations during line dips; latch-off mode protects against sustained overvoltage events. |
Use Scenario: High-volume AC/DC power supply for home audio systems, LED lighting drivers, and small appliances where BOM cost and reliability are critical. IC Role / Device Role / Timing Role: Integrated protection controller providing both auto-restart (for intermittent faults) and latch-off (for catastrophic failures) without external supervision circuitry. Use Value: External BL pin enables OEM-defined safety escalation (e.g., thermal cutoff integration); green mold compound supports lead-free reflow and RoHS compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-mode flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE3BS03G | Same PG-DSO-8 package and BiCMOS process, but lacks integrated 500V HV startup cell - requires external high-voltage resistor network. | Suitable for designs with existing auxiliary supply or lower-cost BOM where startup resistor loss is acceptable. | Select ICE3BS03G only if auxiliary winding is available for VCC startup and EMI requirements allow non-jittered operation. |
| UCC28632 | Fixed 66kHz frequency, no HV pin, uses external VCC supply; includes adaptive dead-time control not present in ICE3GS03LJGXUMA1. | Better suited for higher-efficiency quasi-resonant (QR) flyback topologies requiring valley-switching detection. | Choose UCC28632 when QR operation and ultra-low no-load power (<30mW) are mandatory, and auxiliary supply is guaranteed. |
Compared with ICE3BS03G and UCC28632, ICE3GS03LJGXUMA1 uniquely combines 500V HV startup, 130kHz fixed frequency, and extendable blanking in a single PG-DSO-8 package - delivering lowest BOM count and fastest time-to-market for universal-input, cost-sensitive flyback adapters.
Availability
ICE3GS03LJGXUMA1 is available at Aetrix Electronics and suitable for DVD/Blu-ray players, set-top box adapters, and notebook chargers requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for ICE3GS03LJGXUMA1 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.
This device belongs to Infineon's F3 family of AC/DC PWM controllers - engineered specifically for high-efficiency, low-standby, universal-input flyback converters in consumer and computing power supplies.
FAQ
What is the purpose of the BL pin on ICE3GS03LJGXUMA1?
The BL pin serves two distinct functions: first, it enables extension of the internal 20ms blanking window by connecting an external capacitor to ground - suppressing false overcurrent trips during high-load transients; second, pulling BL below 0.33V forces immediate latch-off shutdown, allowing external fault signals (e.g., from thermal sensors) to trigger irreversible protection.
Does ICE3GS03LJGXUMA1 require an external startup resistor?
No. The IC integrates a 500V-rated startup cell connected directly to the HV pin, which draws initial current from the bulk capacitor until VCC rises above the 18V UVLO threshold. This eliminates the need for an external high-voltage startup resistor, reducing component count, power loss, and PCB space.
How does active burst mode achieve <100mW standby power?
In active burst mode, the controller enters low-frequency burst cycles while maintaining full optocoupler feedback control - unlike conventional burst modes that disable regulation. Each burst delivers just enough energy to sustain output voltage, minimizing switching and gate drive losses. Combined with BiCMOS low-quiescent design, this achieves sub-100mW no-load consumption at 265VAC.
Can ICE3GS03LJGXUMA1 be used in quasi-resonant (QR) flyback topologies?
No. ICE3GS03LJGXUMA1 is a fixed-frequency (130kHz) current-mode controller without valley detection or variable-frequency QR control logic. It is designed for DCM/CCM flyback operation. For QR applications, Infineon recommends the ICE5QSBG or ICE5QSG series, which integrate dedicated zero-current detection and adaptive frequency modulation.
ICE3GS03LJGXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- 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:
- 18 V
- Voltage - Supply (Vcc/Vdd):
- 10.5V ~ 25V
- Duty Cycle:
- 75%
- Frequency - Switching:
- 130kHz
- Power (Watts):
- -
- Fault Protection:
- Over Load, Over Temperature, Over Voltage
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- PG-DSO-8
- Mounting Type:
- Surface Mount
ICE3GS03LJGXUMA1 FAQ
1.How can I place an order for ICE3GS03LJGXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE3GS03LJGXUMA1 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 ICE3GS03LJGXUMA1 reliable?
The price and inventory of ICE3GS03LJGXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3GS03LJGXUMA1 is usually 5 days.
3.What payment methods are accepted for ICE3GS03LJGXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3GS03LJGXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE3GS03LJGXUMA1?
ICE3GS03LJGXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE3GS03LJGXUMA1 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 ICE3GS03LJGXUMA1?
For technical support, including ICE3GS03LJGXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3GS03LJGXUMA1 requirements.
6.How does Aetrix verify that ICE3GS03LJGXUMA1 is sourced from the original manufacturer or authorized distributors?
All ICE3GS03LJGXUMA1 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 ICE3GS03LJGXUMA1 meets industry standards.
7.What is the process for return or replacement of ICE3GS03LJGXUMA1?
All ICE3GS03LJGXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE3GS03LJGXUMA1, 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 ICE3GS03LJGXUMA1 part is unused and in its original packaging.
Return procedure for ICE3GS03LJGXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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