Datasheet
SLUS395J - FEBRUARY 2000 - REVISED MARCH 2009
3
www.ti.com
electrical characteristics, T
A
= 0°C to 70°C for the UCC3817 and T
A
= −40°C to 85°C for the UCC2817, T
A
= T
J,
VCC = 12 V, R
T
= 22 kΩ, C
T
= 270 pF, (unless otherwise noted)
supply current section
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
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
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
VCC turn-on threshold (UCCx817) 15.4 16 16.6 V
VCC turn-off threshold (UCCx817) 9.4 9.7 V
UVLO hysteresis (UCCx817) 5.8 6.3 V
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 V
VCC turn-off threshold (UCCx818) 9.4 9.7 V
UVLO hysteresis (UCCx818) 0.3 0.5 V
voltage amplifier section
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input voltage
T
A
= 0°C to 70°C 7.387 7.5 7.613 V
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
over voltage protection and enable section
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Over voltage reference
VREF
+0.48
VREF
+0.50
VREF
+0.52
V
Hysteresis 300 500 600 mV
Enable threshold 1.7 1.9 2.1 V
Enable hysteresis 0.1 0.2 0.3 V
current amplifier section
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input offset voltage V
CM
= 0 V, V
CAOUT
= 3 V −3.5 0 2.5 mV
Input bias current V
CM
= 0 V, V
CAOUT
= 3 V −50 −100 nA
Input offset current V
CM
= 0 V, V
CAOUT
= 3 V 25 100 nA
Open loop gain V
CM
= 0 V, V
CAOUT
= 2 V to 5 V 90 dB
Common-mode rejection ratio V
CM
= 0 V to 1.5 V, V
CAOUT
= 3 V 60 80 dB
High-level output voltage I
L
= −120 µA 5.6 6.5 6.8 V
Low-level output voltage I
L
= 1 mA 0.1 0.2 0.5 V
Gain bandwidth product See Note 1 2.5 MHz
NOTES: 1. Ensured by design, not production tested.