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UCC1808- Datasheet(PDF) 2 Page - Texas Instruments

Part No. UCC1808-
Description  Low Power Current Mode Push-Pull PWM
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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UCC1808- Datasheet(HTML) 2 Page - Texas Instruments

   
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2
UCC1808-1/-2
UCC2808-1/-2
UCC3808-1/-2
CONNECTION DIAGRAM
ELECTRICAL CHARACTERISTICS: Unless otherwise specified,TA = 0°C to 70°C for the UCC3808-X, –40°C to 85°C for
the UCC2808-X and –55°C to 125°C for the UCC1808-X, VDD = 10V (Note 6), 1
µF capacitor from VDD to GND, R = 22kΩ,
C = 330pF. TA =TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator Section
Oscillator Frequency
175
194
213
kHz
Oscillator Amplitude/VDD
(Note 1)
0.44
0.5
0.56
V/V
Error Amplifier Section
Input Voltage
COMP = 2V
1.95
2
2.05
V
Input Bias Current
–1
1
µA
Open Loop Voltage Gain
60
80
dB
COMP Sink Current
FB = 2.2V, COMP = 1V
0.3
2.5
mA
COMP Source Current
FB = 1.3V, COMP = 3.5V
–0.2
–0.5
mA
PWM Section
Maximum Duty Cycle
Measured at OUTA or OUTB
48
49
50
%
Minimum Duty Cycle
COMP = 0V
0
%
Current Sense Section
Gain
(Note 2)
1.9
2.2
2.5
V/V
Maximum Input Signal
COMP = 5V (Note 3)
0.45
0.5
0.55
V
CS to Output Delay
COMP = 3.5V, CS from 0 to 600mV
100
200
ns
CS Source Current
–200
nA
CS Sink Current
CS = 0.5V, RC = 5.5V (Note 7)
5
10
mA
Over Current Threshold
0.7
0.75
0.8
V
COMP to CS Offset
CS = 0V
0.35
0.8
1.2
V
Output Section
OUT Low Level
I = 100mA
0.5
1
V
OUT High Level
I = –50mA, VDD – OUT
0.5
1
V
Rise Time
CL = 1nF
25
60
ns
Fall Time
CL = 1nF
25
60
ns
Undervoltage Lockout Section
Start Threshold
UCCx808-1 (Note 6)
11.5
12.5
13.5
V
UCCx808-2
4.1
4.3
4.5
V
DIL-8, SOIC-8 (Top View)
J or N Package, D Package
Supply Voltage (IDD
≤ 10mA) . . . . . . . . . . . . . . . . . . . . . . . 15V
Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
OUTA/OUTB Source Current (peak) . . . . . . . . . . . . . . . . –0.5A
OUTA/OUTB Sink Current (peak) . . . . . . . . . . . . . . . . . . . 1.0A
Analog Inputs (FB, CS) . –0.3V to VDD+0.3V, not to exceed 6V
Power Dissipation at TA = 25°C (N Package). . . . . . . . . . . . 1W
Power Dissipation at TA = 25°C (D Package) . . . . . . . . 650mW
Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10sec.) . . . . . . . . . . . . . +300°C
Currents are positive into, negative out of the specified terminal.
Consult Packaging Section of Databook for thermal limitations
and considerations of package.
ABSOLUTE MAXIMUM RATINGS
ORDER INFORMATION


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