Description ICE2QS03G is a quasi-resonant PWM controller optimized for off-line switch power supply applications such as LCD TV, CRT TV and notebook adapter. The digital frequency reduction with decreasing load enables a quasi-resonant operation till very low load. As a result, the overall system efficiency is significantly improved compared to other conventional solutions.

Product Highlight • Active burst mode for low standby power
• Digital frequency reduction for better overall system efficiency
• Integrated power cell for IC self-power supply

Features • Quasiresonant operation till very low load
• Active burst mode operationat light/no load for low standby input power (< 100mW)
• Digital frequency reductionwith decreasing load
• Power cell for VCC pre-charging with constant current
• Built-in digital soft-start
• Foldback correction and cycle-by-cycle peak current limitation
• Auto restart mode for VCC Overvoltage protection
• Auto restart mode for VCC Undervoltage protection
• Auto restart mode for openloop/overload protection
• Latch-off mode for adjustable output overvoltage protection
• Latch-off mode for Short-winding protection

Manufacturer	Infineon
Product Category	AC DC Converters, Offline Switchers
Series	ICE2QS03
Packaging	Alternate Packaging
Package-Case	8-SOIC (0.154", 3.90mm Width)
Operating-Temperature	-40°C ~ 150°C (TJ)
Mounting-Type	Surface Mount
Supplier-Device-Package	PG-DSO-8
Watt	-
Output-Isolation	Isolated
Internal-Switch-s	No
Voltage-Breakdown	-
Topology	Flyback
Voltage-Start-Up	18V
Voltage-Supply-Vcc-Vdd	10.5 V ~ 27 V
Duty-Cycle	50%
Frequency-Switching	52kHz
Fault-Protection	Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage
Control-Features	-
Part-#-Aliases	ICE2QS03G ICE2QS03GXT SP000775042
Package-Case	SOIC-8