Datasheet
SLUS488E − SEPTEMBER 2002 − REVISED JULY 2009
3
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absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Supply voltage, V
DD
(I
DD
< 10 mA) 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, I
DD
20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sink current (peak): OUTA 1.0 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTB 1.0 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Source current (peak): OUTA −0.5 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTB −0.5 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog inputs: CTRL −0.3 V to V
DD
+0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CS −0.3 V to V
DD
+0.3 V, not to exceed 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R
SET
(minimum) >5 kΩ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R
T
(−100 µA < I
RT
< 100 µA) −0.3 V to 2.0 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation at T
A
= 25°C (P package) 1 W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation at T
A
= 25°C (D package) 650 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation at T
A
= 25°C (PW package) 400 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction operating temperature, T
J
−55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature, T
stg
−65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature (soldering 10 seconds) 300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
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. All voltages are with respect to GND.
Currents are positive into, and negative out of the specified terminal.
electrical characteristics over recommended operating virtual junction temperature range,
V
DD
= 10 V (See Note 1),1-µF capacitor from VDD to GND, R
T
= 165 kΩ, R
F
= 1 kΩ, C
F
= 220 pF,
R
SET
= 50 kΩ, T
A
= −40°C to 85°C for UCC2808x, T
A
= 0°C to 70°C for UCC3808x, T
A
= T
J
(unless otherwise noted)
overall
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Start-up current VDD < UVLO start threshold voltage 120 200 µA
Supply current CTRL = 0 V, CS = 0 V,
See Note 1
1.5 2.5 mA
undervoltage lockout
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Start threshold voltage
UCC38083/5 See Note 1 11.5 12.5 13.5
Start threshold voltage
UCC38084/6 4.1 4.3 4.5
Minimum operating voltage
UCC38083/5 7.6 8.3 9.0
V
Minimum operating voltage
after start
UCC38084/6 3.9 4.1 4.3
V
Hysteresis voltage
UCC38083/5 3.5 4.2 5.1
Hysteresis voltage
UCC38084/6 0.1 0.2 0.3
oscillator
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Frequency 2 x f(OUTA) 180 200 220 kHz
Voltage amplitude See Note 2 1.4 1.5 1.6 V
Oscillator fall time (dead time) 110 220 ns
RT pin voltage 1.2 1.5 1.6 V