UCC2817A, UCC2818A
UCC3817A, UCC3818A
SLUS577B − SEPTEMBER, 2003 − REVISED FEBRUARY 2006
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
Over Voltage Protection and Enable Section
Over voltage reference
Hysteresis
Enable threshold
Enable hysteresis
Current Amplifier Section
Input offset voltage
Input bias current
Input offset current
Open loop gain
Common-mode rejection ratio
High-level output voltage
Low-level output voltage
Gain bandwidth product
Voltage Reference Section
Input voltage
Load regulation
Line regulation
Short-circuit current
Oscillator Section
Initial accuracy
Voltage stability
Total variation
Ramp peak voltage
Ramp amplitude voltage
(peak to peak)
Peak Current Limit Section
PKLMT reference voltage
PKLMT propagation delay
NOTES: 1. Ensured by design, not production tested.
2. Reference variation for VCC < 10.8 V is shown in Figure 8.
−15
150
350
15
500
mV
ns
TA = 25°C
VCC = 10.8 V to 15 V
Line, temp
85
−1
80
4.5
3.5
5
4
100
115
1
120
5.5
4.5
V
kHz
%
kHz
TA = 0°C to 70°C
TA = −40°C to 85°C
IREF = 1 mA to 2 mA
VCC = 10.8 V to 15 V(2)
VREF = 0 V
7.387
7.369
0
0
−20
−25
7.5
7.5
7.613
7.631
10
10
−50
mV
mA
V
VCM = 0 V,
VCM = 0 V,
VCM = 0 V,
VCM = 0 V,
VCM = 0 V to 1.5 V,
IL = −120
µA
IL = 1 mA
(1)
VCAOUT = 3 V
VCAOUT = 3 V
VCAOUT = 3 V
VCAOUT = 2 V to 5 V
VCAOUT = 3 V
−3.5
0
−50
25
90
60
5.6
0.1
80
6.5
0.2
2.5
6.8
0.5
V
MHz
dB
2.5
−100
100
nA
mV
VREF
+0.48
300
1.7
0.1
VREF
+0.50
500
1.9
0.2
VREF
+0.52
600
2.1
0.3
V
V
mV
TEST CONDITIONS
MIN
TYP
MAX
UNITS
4
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