Datasheet

3
UC1572
UC2572
UC3572
ELECTRICAL CHARACTERISTICS:
Unless otherwise specified, VCC = 5V, CT = 680pF, T
A
=T
J
.
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Gate Drive Output Section
OUT High Saturation I
OUT = 0 0 0.3 V
I
OUT = –10mA 0.7 1.5 V
I
OUT = –100mA 1.5 2.5 V
OUT Low Saturation I
OUT = 10mA 0.1 0.4 V
I
OUT = 100mA 1.5 2.2 V
Rise Time T
J = 25°C, CLOAD = 1nF + 3.3 Ohms 30 80 nS
Fall Time T
J = 25°C, CLOAD = 1nF + 3.3 Ohms 30 80 nS
Pulse Width Modulator Section
Maximum Duty Cycle EAINV = +100mV, VCC = 5V to 30V 92 96 %
Minimum Duty Cycle EAINV = –100mV, VCC = 5V to 30V 0 %
Modulator Gain EAOUT = 1.5V to 2.5V 45 55 65 %/V
Undervoltage Lockout Section
Start Threshold 3.5 4.2 4.5 V
Hysteresis 100 200 300 mV
Sleep Mode Section
Threshold 1.8 2.2 2.6 V
Supply Current Section
IVCC VCC = 5V, 30V 9 15 mA
VCC = 30, CS = 3V 50 150
A
Figure 1. Typical waveforms.
UDG-94095