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This stand alone controller provides several special enhancements to satisfy the needs for low power standby and protection features. In standby mode frequency reduction is used to lower the power consumption and provide a stable output voltage in this mode. The frequency reduction is limited to 20kHz / 21.5 kHz (typ.) to avoid audible noise. In case of failure modes like open loop, overvoltage or overload due to short circuit the device switches in Auto Restart Mode which is controlled by the internal protection unit. By means of the internal precise peak current limitation the dimension of the transformer and the secondary diode can be lower which leads to more cost efficiency.
ICE2AS01G Maximum Ratings
Parameter
Symbol
Limit Values
Unit
Remarks
min.
max.
VCC Supply Voltage
VCC
-0.3
22
V
FB Voltage
VFB
-0.3
6.5
V
SoftS Voltage
VSoftS
-0.3
6.5
V
ISense
ISense
-0.3
3
V
Junction Temperature
Tj
-40
150
Controller & CoolMOS
Storage Temperature
TS
-50
150
Thermal Resistance Junction-Ambient
RthJA
-
90
K/W
P-DIP-8-4
Thermal Resistance Junction-Ambient
RthJA
-
185
K/W
P-DSO-8-3
ESD Capability1)
VESD
-
2
kV
Human Body Model
1) Equivalent to discharging a 100pF capacitor through a 1.5 kΩ series resistor
ICE2AS01G Features
• Only few external Components required • Input Undervoltage Lockout • 67kHz/100kHz fixed Switching Frequency • Max Duty Cycle 72% • Low Power Standby Mode to support "Blue Angle" Norm • Latched Thermal Shut Down • Overload and Open Loop Protection • Overvoltage Protection during Auto Restart • Adjustable Peak Current Limitation via External Resistor • Overall Tolerance of Current Limiting < ±5% • Internal Leading Edge Blanking • Soft Start • Soft Switching for Low EMI