Reference Section |
|
Output voltage |
IO = 1 mA, TA = 25°C |
4.95 |
5 |
5.05 |
4.9 |
5 |
5.1 |
V |
|
Line regulation |
VCC = 12 V to 25 V |
|
6 |
20 |
|
6 |
20 |
mV |
|
Load regulation |
IO = 1 mA to 20 mA |
|
6 |
25 |
|
6 |
25 |
mV |
|
Temperature coefficient of output voltage |
|
|
0.2 |
0.4 |
|
0.2 |
0.4 |
mV/°C |
|
Output voltage with worst-case variation |
VCC = 12 V to 25 V, IO = 1 mA to 20 mA |
4.9 |
|
5.1 |
4.82 |
|
5.18 |
V |
|
Output noise voltage |
f = 10 Hz to 10 kHz, TA = 25°C |
|
50 |
|
|
50 |
|
µV |
|
Output-voltage long-term drift |
After 1000 h at TA = 25°C |
|
5 |
25 |
|
5 |
25 |
mV |
|
Short-circuit output current |
|
–30 |
–100 |
–180 |
–30 |
–100 |
–180 |
mA |
Oscillator Section |
|
Oscillator frequency(3) |
TA = 25°C |
47 |
52 |
57 |
47 |
52 |
57 |
kHz |
|
Frequency change with supply voltage |
VCC = 12 V to 25 V |
|
2 |
10 |
|
2 |
10 |
Hz/kHz |
|
Frequency change with temperature |
|
|
50 |
|
|
50 |
|
Hz/kHz |
|
peak-to-peak amplitude at RT/CT |
|
|
1.7 |
|
|
1.7 |
|
V |
Error-Amplifier Section |
|
Feedback input voltage |
COMP at 2.5 V |
2.45 |
2.50 |
2.55 |
2.42 |
2.50 |
2.58 |
V |
|
Input bias current |
|
|
–0.3 |
–1 |
|
–0.3 |
–2 |
µA |
|
Open-loop voltage amplification |
VO = 2 V to 4 V |
65 |
90 |
|
65 |
90 |
|
dB |
|
Gain-bandwidth product |
|
0.7 |
1 |
|
0.7 |
1 |
|
MHz |
|
Supply-voltage rejection ratio |
VCC = 12 V to 25 V |
60 |
70 |
|
60 |
70 |
|
dB |
|
Output sink current |
VFB, at 2.7 V, COMP at 1.1 V |
2 |
6 |
|
2 |
6 |
|
mA |
|
Output source current |
VFB, at 2.3 V, COMP at 5 V |
–0.5 |
–0.8 |
|
–0.5 |
–0.8 |
|
mA |
|
Hihg-level output voltage |
VFB, at 2.3 V, RL = 15 kΩ to GND |
5 |
6 |
|
5 |
6 |
|
V |
|
Low-level output voltage |
VFB, at 2.7 V, RL = 15 kΩ to GND |
|
0.7 |
1.1 |
|
0.7 |
1.1 |
V |
Current-sense Section |
|
Voltage amplification |
See(4)(5) |
2.85 |
3 |
3.13 |
2.85 |
3 |
3.15 |
V/V |
|
Current-sense comparator threshold |
COMP at 5 V, see(4) |
0.9 |
1 |
1.1 |
0.9 |
1 |
1.1 |
V |
|
Supply-voltage rejection ratio |
VCC = 12 V to 25 V, see(4) |
|
70 |
|
|
70 |
|
dB |
|
Input bias current |
|
|
–2 |
–10 |
|
–2 |
–10 |
µA |
|
Delay time to output |
|
|
150 |
300 |
|
150 |
300 |
ns |
Output Section |
|
High-level output voltage |
IOH = –20 mA |
13 |
13.5 |
|
13 |
13.5 |
|
V |
IOH = –200 mA |
12 |
13.5 |
|
13 |
13.5 |
|
|
Low-level output voltage |
IOH = 20 mA |
|
0.1 |
0.4 |
|
0.1 |
0.4 |
V |
IOH = 200 mA |
|
1.5 |
2.2 |
|
1.5 |
2.2 |
|
Rise time |
CL = 1 nF, TA = 25°C |
|
50 |
150 |
|
50 |
150 |
ns |
|
fall time |
CL = 1 nF, TA = 25°C |
|
50 |
150 |
|
50 |
150 |
ns |
Undervoltage-Lockout Section |
|
Start threshold voltage |
TLx842, TLx844 |
|
15 |
16 |
17 |
14.5 |
16 |
17.5 |
V |
TLx843, TLx845 |
7.8 |
8.4 |
9 |
7.8 |
8.4 |
9 |
|
Minimum operating voltage after startup |
TLx842, TLx844 |
|
9 |
10 |
11 |
8.5 |
10 |
11.5 |
V |
TLx843, TLx845 |
7 |
7.6 |
8.2 |
7 |
7.6 |
8.02 |
Pulse-Width-Modulator Section |
|
Maximum duty cycle |
TLx842, TLx843 |
|
95% |
97% |
100% |
95% |
97% |
100% |
|
TLx844, TLx845 |
46% |
48% |
50% |
46% |
48% |
50% |
|
Minimum duty cycle |
|
|
|
0% |
|
|
0% |
Supply Voltage |
|
Start-up current |
|
|
0.5 |
1 |
|
0.5 |
1 |
mA |
|
Operating supply current |
VFB and ISENSE at 0 V |
|
11 |
17 |
|
11 |
17 |
mA |
|
Limiting voltage |
ICC = 25 mA |
|
34 |
|
|
34 |
|
V |