Datasheet

   
   
SLUS517C − DECEMBER 2002 − REVISED SEPTEMBER 2005
4
www.ti.com
ELECTRICAL CHARACTERISTICS
T
A
= –40°C to 105°C for the UCC2851x, T
A
= T
J
, VCC = 12 V, R
T
= 156 kΩ, R
CT_BUFF
= 10 kΩ
(unless otherwise noted)
supply current
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Supply current, off VCC turn-on threshold −300 mV 100 150 µA
Supply current, on no load on GT1 or GT2 4 6 mA
undervoltage lockout (UVLO)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
VCC turn-on threshold
UCC28510
UCC28512
UCC28514
UCC28516
15.4 16 16.6
VCC turn-on threshold
UCC28511
UCC28513
UCC28515
UCC28517
9.7 10.2 10.8
VCC turn-off threshold UCC2851X 9.1 9.7 10.6
V
UVLO hysteresis
UCC28510
UCC28512
UCC28514
UCC28516
5.8 6.3 6.8
V
UVLO hysteresis
UCC28511
UCC28513
UCC28515
UCC28517
0.3 0.5 0.8
voltage amplifier
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input voltage
25°C 7.39 7.50 7.61
V
Input voltage
Over temperature 7.35 7.50 7.65
V
V
SENSE
bias current V
SENSE
= V
REF
100 300 nA
Open loop gain 2 V ≤ VAOUT ≤ 4 V 50 60 dB
High-level output voltage I
LOAD
= –150 µA 5.3 5.5 5.6
V
Low-level output voltage I
LOAD
= 150 µA 0.00 0.05 0.15
V
g
M
conductance I
VAOUT
= −20 µA to 20 µA 70 100 130 µS
Maximum source current −1 −3.5
mA
Maximum sink current 1 3.5
mA
PFC stage overvoltage protection and enable
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Overvoltage reference window
VREF
+ 0.440
VREF
+ 0.490
VREF
+ 0.540
V
Hysteresis 300 500 600 mV
Enable threshold 1.7 1.9 2.1
V
Enable hysteresis 0.08 0.2 0.3
V