SLUS577B − SEPTEMBER, 2003 − REVISED FEBRUARY 2006
3
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ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature (unless otherwise noted)
†
UCCx81xA UNIT
Supply voltage VCC 18 V
Supply current ICC 20 mA
Gate drive current, continuous 0.2
Gate drive current 1.2
A
Input voltage, CAI, MOUT, SS 8
Input voltage, PKLMT 5
V
Input voltage, VSENSE, OVP/EN 10
Input current, RT, IAC, PKLMT 10
Input current, VCC (no switching) 20
mA
Maximum negative voltage, DRVOUT, PKLMT, MOUT −0.5 V
Power dissipation 1 W
Junction temperature, T
J
−55 to 150
Storage temperature, T
stg
−65 to 150
°C
Lead temperature, T
sol
(soldering, 10 seconds) 300
Power dissipation 1 W
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
T
A
= 0°C to 70°C for the UCC3817A and T
A
= −40°C to 85°C for the UCC2817A, T
A
= T
J,
VCC = 12 V, R
T
= 22 kΩ,
C
T
= 270 pF, (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Supply Current Section
Supply current, off VCC = (VCC turn-on threshold −0.3 V) 150 300 µA
Supply current, on VCC = 12 V, No load on DRVOUT 2 4 6 mA
UVLO Section
VCC turn-on threshold (UCCx817) 15.4 16 16.6
VCC turn-off threshold (UCCx817) 9.4 9.7
UVLO hysteresis (UCCx817) 5.8 6.3
Maximum shunt voltage (UCCx817) I
VCC
= 10 mA 15.4 17 17.5
V
VCC turn-on threshold (UCCx818) 9.7 10.2 10.8
VCC turn-off threshold (UCCx818) 9.4 9.7
UVLO hysteresis (UCCx818) 0.3 0.5
Voltage Amplifier Section
T
A
= 0°C to 70°C 7.387 7.5 7.613
Input voltage
T
A
= −40°C to 85°C 7.369 7.5 7.631
V
V
SENSE
bias current V
SENSE
= V
REF
, VAOUT = 2.5 V 50 200 nA
Open loop gain VAOUT = 2 V to 5 V 50 90 dB
High-level output voltage I
L
= −150 µA 5.3 5.5 5.6 V
Low-level output voltage I
L
= 150 µA 0 50 150 mV
