3
UCC1800/1/2/3/4/5
UCC2800/1/2/3/4/5
UCC3800/1/2/3/4/5
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, these specifications apply for –55°C ≤ T
A
≤ +125°C for
UCC180x; –40°C ≤ T
A
≤ +85°C for UCC280x; 0°C ≤ T
A
≤ +70°C for UCC380x; V
CC
=10V (Note 3); RT=100k from REF to RC;
CT=330pF from RC to GND; 0.1 F capacitor from V
CC
to GND; 0.1 F capacitor from V
REF
to GND. T
A
=T
J
.
PARAMETER TEST CONDITIONS UCC180X
UCC280X
UCC380X UNITS
MIN TYP MAX MIN TYP MAX
Reference Section
Output Voltage T
J
=+25°C, I=0.2mA, UCCx800/1/2/4 4.925 5.00 5.075 4.925 5.00 5.075 V
T
J
=+25°C, I=0.2mA, UCCx803/5 3.94 4.00 4.06 3.94 4.00 4.06
Load Regulation 0.2mA<I<5mA 10 30 10 25 mV
Line Regulation T
J
=+25°C,
V
CC
=10V to Clamp (I
VCC
=25mA)
1.9 1.9 mV/V
T
J
=–55°C to +125°C,
V
CC
=10V to Clamp (I
VCC
=25mA)
2.5 2.1 mV/V
Total Variation UCCx800/1/2/4 (Note 7) 4.88 5.00 5.10 4.88 5.00 5.10 V
UCCx803/5 (Note 7) 3.90 4.00 4.08 3.90 4.00 4.08 V
Output Noise Voltage 10Hz ≤ f ≤ 10kHz, T
J
=+25°C (Note 9) 130 130 µV
Long Term Stability T
A
=+125°C, 1000 Hours (Note 9) 5 5 mV
Output Short Circuit –5 –35 –5 –35 mA
Oscillator Section
Oscillator Frequency UCCx800/1/2/4 (Note 4) 40 46 52 40 46 52 kHz
UCCx803/5 (Note 4) 26 31 36 26 31 36 kHz
Temperature Stability (Note 9) 2.5 2.5 %
Amplitude peak-to-peak 2.25 2.40 2.55 2.25 2.40 2.55 V
Oscillator Peak Voltage 2.45 2.45 V
Error Amplifier Section
Input Voltage COMP=2.5V; UCCx800/1/2/4 2.44 2.50 2.56 2.44 2.50 2.56 V
COMP=2.0V; UCCx803/5 1.95 2.0 2.05 1.95 2.0 2.05
Input Bias Current
–11–11µA
Open Loop Voltage Gain 60 80 60 80 dB
COMP Sink Current FB=2.7V, COMP=1.1V 0.3 3.5 0.4 2.5 mA
COMP Source Current FB=1.8V, COMP=REF–1.2V –0.2 –0.5 –0.8 –0.2 –0.5 –0.8 mA
Gain Bandwidth Product (Note 9) 2 2 MHz
PWM Section
Maximum Duty Cycle UCCx800/2/3 97 99 100 97 99 100 %
UCCx801/4/5 48 49 50 48 49 50
Minimum Duty Cycle COMP=0V 0 0 %
Current Sense Section
Gain (Note 5) 1.10 1.65 1.80 1.10 1.65 1.80 V/V
Maximum Input Signal COMP=5V (Note 6) 0.9 1.0 1.1 0.9 1.0 1.1 V
Input Bias Current
–200 200 –200 200 nA
CS Blank Time 50 100 150 50 100 150 ns
Over-Current Threshold 1.42 1.55 1.68 1.42 1.55 1.68 V
COMP to CS Offset CS=0V 0.45 0.90 1.35 0.45 0.90 1.35 V