ICE3BR1765JXKLA1 - 650V CoolSET F3R Offline SMPS | Infineon
MPN: ICE3BR1765JXKLA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.45 | $24.50 |
| 100 | $2.05 | $205.00 |
| 500 | $1.72 | $860.00 |
| 1,000 | $1.48 | $1,480.00 |
| 3,000 | $1.21 | $3,630.00 |
ICE3BR1765JXKLA1 Overview
A flyback converter is the most common topology for low-to-medium power isolated AC-DC switching power supplies, where the transformer's primary inductance stores energy during the MOSFET on-time and transfers it to the secondary during the off-time. The integrated power-stage approach (CoolSET) eliminates the need for an external MOSFET, gate driver, and many discrete protection parts - reducing BOM count, PCB area, and overall system cost for sub-25 W applications. This category sits within AC-DC converters -> power management ICs -> semiconductor devices.
Key features include built-in 650 V avalanche-rated CoolMOS, integrated soft-start, frequency jittering for low EMI, auto-restart protection for open-loop, VCC overvoltage, overload, and overtemperature faults. The 65 kHz fixed frequency keeps the fundamental switching noise out of the AM radio band and simplifies input EMI filter design. The PG-DIP-8 package provides 8 mm of creepage distance between high-voltage drain pins and low-voltage signal pins, which is critical for offline safety isolation.
Typical applications include mobile phone chargers, standby auxiliary supplies for white goods and TVs, DVD player standby rails, and any sub-25 W isolated AC-DC adapter or auxiliary SMPS. The universal VCC range also supports wide-input industrial auxiliary supplies. When designing with this device, ensure the snubber network across the transformer's primary leakage inductance is properly sized to keep the drain voltage spike below the 650 V BVDSS rating. The auto-restart fault timer is set by an external capacitor on the BAULT pin and should be reviewed against the application's hold-up requirements.
Drop-in alternatives for ICE3BR1765JXKLA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ICE3BR1765JXKLA1 (same form factor and footprint) β differing in Mounting Type, Package, Switching Frequency, Topology.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ICE3BR1765J
β Drop-Inπ Reference alternative (not in catalog)
ICE3RBR1765JGXUMA1
β Drop-Inβ In Stock
$0.92 / Unit
View Datasheet βICE3BR2280J
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ICE3BR2380J
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ICE3BR0680J
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ICE3BR1765JXKLA1 Maximum Ratings & Electrical Characteristics
| Topology | Flyback (offline AC-DC) |
| Integrated MOSFET Technology | CoolMOS 650 V |
| Drain-Source Voltage (VDS max) | 650 V |
| On-Resistance (RDS(on) max) | 1.96 ohm |
| Switching Frequency | 65 kHz (fixed) |
| Maximum Output Power | 25 W |
| VCC Supply Voltage Range | 10.5 V to 25 V |
| Package | PG-DIP-8 (through-hole) |
| Pin Count | 8 |
| Protection Features | Auto-restart for VCC OVP, overload, open-loop, overtemperature |
| Frequency Jittering | Yes (for low EMI) |
| Soft-Start | Integrated |
| Operating Junction Temperature | -40C to +150C |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
ICE3BR1765JXKLA1 Pin Configuration
| Pin 1 | DRAIN β High-voltage MOSFET drain (650V rating) |
| Pin 2 | DRAIN β High-voltage MOSFET drain (internally connected to pin 1) |
| Pin 3 | VCC β Supply voltage for control circuit (10.5-25V) |
| Pin 4 | FB β Feedback input for optocoupler regulation loop |
| Pin 5 | CS β Current sense input for peak current control |
| Pin 6 | BAULT β Auto-restart fault timer capacitor connection |
| Pin 7 | GND β Ground reference for control circuit |
| Pin 8 | NC β Not connected (per CoolSET F3R datasheet) |
Typical Applications
ICE3BR1765JXKLA1 is suitable for 6 applications: Mobile Phone and Tablet Chargers, White Goods Standby Auxiliary Supplies, TV and Set-Top Box Standby Supplies, DVD and Set-Top Box Auxiliary Power, Industrial Auxiliary Supplies, IoT and Smart Home Hub Power.
Mobile Phone and Tablet Chargers
The ICE3BR1765JXKLA1 is ideally suited for sub-25W USB charger designs where its 650V CoolMOS handles universal mains input (85-265VAC) with comfortable derating margin. The fixed 65 kHz switching frequency with integrated frequency jittering helps meet EN55022 Class B conducted EMI without large filter components. The auto-restart protections cover common charger fault scenarios - overvoltage on VCC, output short-circuit, and open-loop feedback - allowing the design to meet IEC 60950 / IEC 62368-1 safety requirements. The PG-DIP-8 through-hole package simplifies wave-soldering assembly at high-volume charger manufacturing.
Recommended
White Goods Standby Auxiliary Supplies
White goods (washing machines, refrigerators, dishwashers) require a small standby auxiliary supply that powers the microcontroller, display, and control relays when the main appliance is off. The ICE3BR1765JXKLA1's <100 mW standby power with active burst mode meets EU ecodesign Tier 2 standby requirements. The 25W output power easily covers the few watts typical for appliance standby electronics. The 650V MOSFET rating accommodates 230VAC rectified bus (375V nominal) plus inductive spike transients, ensuring long-term reliability in 10+ year appliance service lives. Integrated thermal shutdown protects against failure modes common in enclosed appliance environments.
Recommended
TV and Set-Top Box Standby Supplies
Modern TVs and set-top boxes must keep network connectivity, IR receivers, and quick-start features alive in standby, requiring a continuous 0.5-3W auxiliary supply. The ICE3BR1765JXKLA1 provides an efficient 5V or 12V standby rail at <100 mW no-load input power, supporting ENERGY STAR standby power compliance. The 65 kHz fixed frequency stays above the AM broadcast band, reducing input filter complexity. The integrated 650V MOSFET and PG-DIP-8 package enable compact designs that fit in the constrained PCB space behind TV mainboards. Frequency jittering further reduces EMI emissions that could interfere with TV tuner RF sensitivity.
Recommended
DVD and Set-Top Box Auxiliary Power
Set-top boxes and DVD/Blu-ray players need an auxiliary 5V/12V supply that operates whenever the unit is plugged in, independent of main power state. The ICE3BR1765JXKLA1 delivers this auxiliary rail at 65 kHz with integrated 650V CoolMOS, eliminating the need for a separate standby converter. The auto-restart fault protection handles the harsh electrical environment of consumer electronics - output short circuits from damaged cables, VCC overvoltage from mains transients, and overload from peripheral device faults. The PG-DIP-8 through-hole package supports cost-effective wave-solder assembly for high-volume consumer production.
Recommended
Industrial Auxiliary Supplies
Industrial control systems, PLCs, and sensor transmitters require isolated 24V or 12V auxiliary supplies from 230/400VAC mains for powering signal conditioning circuits and I/O isolation barriers. The ICE3BR1765JXKLA1's 650V MOSFET rating supports industrial mains voltages including 3-phase 400VAC rectified systems (560V nominal bus). The 25W power level covers most auxiliary rail requirements in distributed control systems. The wide VCC range (10.5-25V) accommodates various auxiliary transformer designs. Auto-restart protections ensure safe failure recovery in unattended industrial installations, minimizing service callouts.
Recommended
IoT and Smart Home Hub Power
Smart home hubs, Wi-Fi routers, and always-on IoT gateways need a compact low-power AC-DC supply that runs continuously. The ICE3BR1765JXKLA1's <100 mW standby and high efficiency at light loads (active burst mode) minimize continuous energy consumption across millions of deployed IoT devices. The integrated 650V MOSFET and protections simplify the safety-isolation barrier required for connected consumer products. The 25W power capability supports hub + peripheral charging needs. PG-DIP-8 packaging provides the high-voltage creepage required for IEC 62368-1 audio/video/ICT equipment safety compliance.
Recommended
Recommended Products Summary
Engineering reference data for ICE3BR1765JXKLA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ICE3BR1765J | ICE3RBR1765JGXUMA1 | ICE3BR2280J | ICE3BR2380J | ICE3BR0680J |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-DIP-8 | PG-DIP-8 | PG-DIP-8 | PG-DIP-8 | PG-DIP-8 | PG-DIP-8 |
| Drain-Source Voltage (VDS max) | 650 V | 650 V | 650 V | 800 V | 800 V | 800 V |
| On-Resistance (RDS(on) max) | 1.96 ohm | 1.96 ohm | 1.96 ohm | 2.20 ohm | 2.20 ohm | 0.68 ohm |
| Switching Frequency | 65 kHz | 65 kHz | 65 kHz | 65 kHz | 65 kHz | 65 kHz |
| Maximum Output Power | 25 W | 25 W | 25 W | 35 W | 35 W | 35 W |
| VCC Supply Voltage Range | 10.5 V to 25 V | 10.5 V to 25 V | 10.5 V to 25 V | 10.5 V to 25 V | 10.5 V to 25 V | 10.5 V to 25 V |
| Topology | Flyback (offline AC-DC) | Flyback | Flyback | Flyback | Flyback | Flyback |
Key Differentiators
- Highest BVDSS in same-package family (vs ICE3BR2280J)
- Integrated CoolSET vs discrete PWM+MOSFET (vs Discrete UCC28C42 + 650V MOSFET)
- Active burst mode for <100mW standby (vs ICE2QR0680Z (older CoolSET))
Design Notes
Estimated: at 25W output from 85-265VAC universal input, the integrated CoolMOS dissipates approximately 0.8-1.2W depending on duty cycle. The PG-DIP-8 package has a thermal resistance of around 80-90 C/W (theta_JA) without external heatsinking, resulting in a junction temperature rise of 80-100C above ambient in a typical adapter enclosure. Ensure adequate airflow or PCB copper heatsinking (at least 100 sq mm of 2oz copper) for continuous full-load operation at high ambient temperatures above 60C.
Keep the high-voltage Drain traces (pins 1, 2) at least 8mm away from low-voltage signal traces (FB, CS, GND) to meet IEC 60950/62368-1 reinforced isolation creepage requirements. Place the VCC bypass capacitor (typically 47uF electrolytic + 100nF ceramic) as close as possible to pin 3. The CS resistor to GND should be a low-inductance type to avoid current sense errors at the 65 kHz switching edge. Use a star-ground topology with the CS sense resistor ground returning directly to the IC GND pin.
Do not exceed the 650V BVDSS rating on the Drain pin - overshoot from transformer leakage inductance can easily exceed this on hard switching edges. Use an RCD snubber network (typically 100k resistor, 1nF-2.2nF capacitor, fast-recovery diode) across the primary winding to clamp leakage spike voltage. The VCC startup resistor chain (from Drain to VCC) must supply enough current to charge the VCC capacitor above the UVLO threshold (typically 10.5V) - undersized startup resistors cause startup failure or restart loops.
Compliance Information
RoHS compliant per Infineon product page and distributor listings. Not AEC-Q100 qualified - this is a power supply IC, not intended for automotive under-hood applications. For automotive auxiliary supplies, consider Infineon's automotive-qualified CoolSET variants.
