UCC2813 0/ 1/ 2/ 3/ 4/ 5 Q1
LOW POWER BICMOS CURRENT MODE PWM
SGLS245D − MAY 2004 − REVISED APRIL 2008
electrical characteristics T
A
= −40_C to 125_C, V
CC
= 10 V (see Note 1), RT = 100 kΩ from REF to
RC, CT = 330 pF from RC to GND, 0.1 F capacitor from V
CC
to GND, 0.1 F capacitor from V
REF
to GND
and T
A
= T
J
(unless otherwise noted)
PARAMETER
Oscillator Section
UCC2813-0/-1/-2/-4
Oscillator frequency
Temperature stability
Amplitude, peak to peak
Oscillator peak voltage
Error Amplifier Section
COMP = 2.5 V
Input voltage
Input bias current
Open loop voltage gain
COMP sink current
COMP source current
Gain bandwidth product
PWM Section
UCC2813-0/-2/-3
Maximum duty cycle
Minimum duty cycle
Current Sense Section
Gain
Maximum input signal
Input bias current
CS blank time
Over-current threshold voltage
COMP to CS offset voltage
Output Section (OUT)
IOUT = 20 mA
Low-level output voltage
IOUT = 200 mA
IOUT = 50 mA, VCC = 5 V
IOUT = 20 mA, VCC = 0 V
IOUT = −20 mA
High-level output voltage, VSAT (VCC − OUT)
Rise time
Fall time
IOUT = −200 mA
IOUT = −50 mA, VCC = 5 V
CL = 1 nF
CL = 1 nF
All parts
All parts
UCC2813-3/-5
All parts
All parts
All parts
UCC2813-3/-5
0.1
0.35
0.15
0.7
0.15
1
0.4
41
44
0.4
0.9
0.4
1.2
0.4
1.9
0.9
70
75
ns
ns
V
V
CS = 0 V
See Note 3
COMP = 5 V,
See Note 4
1.1
0.9
−200
50
1.32
0.45
100
1.55
0.9
1.65
1
1.8
1.1
200
150
1.7
1.35
V/V
V
nA
ns
V
V
COMP = 0 V
UCC2813-1/-4/-5
97
48
99
49
100
50
0
%
%
FB = 2.7 V,
FB = 1.8 V,
See Note 7
COMP = 1.1 V
COMP = REF − 1.2 V
COMP = 2.0 V
UCC2813-0/-1/-2/-4
UCC2813-3/-5
2.42
1.92
−2
60
0.3
−0.2
−0.5
2
80
3.5
−0.8
2.5
2
2.56
2.05
2
V
µA
dB
mA
mA
MHz
See Note 2
See Note 7
2.25
UCC2813-3/-5
40
26
46
31
2.5
2.4
2.45
2.55
52
36
kHz
%
V
V
TEST CONDITIONS
MIN
TYP
MAX
UNIT
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
