UCC1810
UCC2810
UCC3810
ABSOLUTE MAXIMUM RATINGS
V
CC
Voltage (Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V
V
CC
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
OUT1, OUT2 Current, Peak, 5% Duty Cycle. . . . . . . . . . . .
±
1A
OUT1, OUT2 Energy (Capacitive Load) . . . . . . . . . . . . . . 20µJ
Analog Inputs (FB1, FB2, CS1, CS2, SYNC). . . . –0.3V to 6.3V
Operating Junction Temperature . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . 300°C
CONNECTION DIAGRAM
DIL-16, SOIC-16 (TOP VIEW)
J or N Package, DW Package
Note 1:
All voltages are with respect to GND. All currents are
positive into the specified terminals.
Note 2:
Consult Unitrode Integrated Circuits Product & Appli-
cations Handbook for information regarding thermal
specifications and limitations of packages.
Note 3:
In normal operation, V
CC
is powered through a current
limiting resistor. Absolute maximum of 11V applies
when driven from a low impedance such that the V
CC
current does not exceed 20mA.
UCC1810; –40°C
≤
T
A
≤
85°C for UCC2810; 0°C
≤
T
A
≤
70°C for UCC3810; V
CC
= 10V (Note 4); R
T
= 150k; C
T
= 120pF;
No Load; T
A
= T
J
. All parameters are the same for both channels.
PARAMETER
Reference Section
Output Voltage
Load Regulation
Line Regulation
Output Voltage
Output Noise Voltage
Long Term Stability
Output Short Circuit Current
Oscillator Section
Oscillator Frequency
Oscillator Frequency
Temperature Stability
Peak Voltage
Valley Voltage
Peak-to-Peak Amplitude
SYNC Threshold
SYNC Input Current
Error Amplifier Section
FB Input Voltage
FB Input Bias Current
Open Loop Voltage Gain
Unity Gain Bandwidth
COMP Sink Current
COMP Source Current
Minimum Duty Cycle
COMP Soft Start Rise Time
(Note 10)
FB = 2.7V, COMP = 1V
FB = 1.8V, COMP = 4V
COMP = 0V
FB = 1.8V, Rise from 0.5V to REF–1.5V
5
0.3
–0.2
60
73
2
1.4
–0.5
3.5
COMP = 2.5V
2.44
2.50
SYNC = 5V
2.25
0.80
R
T
= 30k, C
T
= 120pF (Note 5)
R
T
= 150k, C
T
= 120pF (Note 5)
(Note 10)
840
200
940
220
2.5
2.5
0.05
2.45
1.65
30
T
J
= 25°C
0mA < I
REF
< 5mA
UVLO Stop Threshold Voltage +0.5V < V
CC
< Shunt
Voltage
Full temperature range, 0mA < I
REF
< 5mA
10Hz < f < 10kHz, T
J
= +25°C (Note 10)
T
A
= +125°C, 1000 Hours (Note 10)
4.85
4.925
5.000
5
12
5.00
235
5
–8
TEST CONDITIONS
MIN
TYP
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, these specifications apply for –55
°
C
≤
T
A
≤
125°C for
MAX UNITS
5.075
25
V
mV
mV
5.10
V
µV
mV
–25
1040
240
mA
kHz
kHz
%
V
V
2.65
2.2
V
V
µA
2.56
±1
V
µA
dB
MHz
mA
mA
%
ms
–0.8
0
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