NTE7098 NTE-7098 | ECG7098 ECG-7098 | NTE Electronics
NTE7098
Integrated Circuit
Current Mode Pulse Width Modulator (PWM)
Control Circuit 8-PIN DIP
See also >>> NTE7099
Description:
The NTE7098 and NTE7099 are integrated circuits in 8-Lead DIP type packages that incorporate a
new precision temperature-controlled oscillator to minimize variations in frequency. An internal
toggle flip-flop, which blanks the output off every other clock cycle, limits the duty-cycle range to less
than 50%. An under-voltage lockout ensures that VREF is stabilized before the output stage is enabled.
Other features include low start-up current, pulse-by-current limiting, and high-current totem pole
output for driving capacitive loads, such as the gate of a power MOSFET. The output is low in the
off state, consistent with N-channel devices.
Features:
- Optimized for Off-Line Control
- Temperature Compensated Oscillator
- 50% Maximum Duty-Cycle Clamp
- Vref Stabilized before Output Stage is Enabled
- Low Start-Up Current
- Pulse-by Pulse Current Limiting
- Improved U/V Lockout
- Double Pulse Suppression
- 1% Trimmed Bandgap Reference
- High Current Totem Pole Output
Info as pdf-file
NTE-ECG replacement list as pdf-file
Diagrams and Info of most NTE-ECG Components
Absolute Maximum Ratings:
Supply Voltage (ICC < 30mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self Limiting
Supply Voltage (Low Impedence Source) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1A
Output Energy (Capacitive Load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5μJ
Analog Inputs (VFB, VSENSE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC
Error Amp Output Sink Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Electrical Characteristics: (0° </= T
A </= +70°C, V
CC = +15V, R
t = 10k, C
t = 3.3nF for sawtooth mode, Note 1 unless otherwise specified)
Parameter |
Test Conditions |
Min |
Typ |
Max |
Unit |
Reference Section |
Output Voltage |
TJ = +25°C, Iref = 1mA |
4.9 |
5.0 |
5.1 |
V |
Line Regulation |
12V </= VIN </= 25V |
- |
6 |
20 |
mV |
Load Regulation |
1mA </= Iref </= 20mA |
- |
6 |
25 |
mV |
Temperature Stability |
Note 2 |
- |
0.2 |
0.4 |
mV/°C |
Total Output Variation |
Line, Load, Temperature, Note 2 |
4.82 |
- |
5.18 |
V |
Output Noise Voltage |
10Hz </= f </= 10kHz, TJ = +25°C, Note 2 |
- |
50 |
- |
µV |
Long Term Stability |
TA = +125°C, 1000Hrs., Note 2 |
- |
5 |
25 |
mV |
Output Short Circuit |
TA = +25°C |
-30 |
-100 |
-180 |
mA |
Oscillator Section |
Initial Accuracy |
Sawtooth Mode, TJ = +25°C |
47 |
52 |
57 |
kHz |
Voltage Stability |
12V </= VCC </= 25V |
- |
0.2 |
1.0 |
% |
Temperature Stability |
Sawtooth Mode, 0° </= TA </= +70°C, Note 2 |
- |
5 |
- |
% |
Amplitude |
VPIN4 peak to peak |
- |
1.7 |
- |
V |
Error Amp Section |
Input Voltage |
VCOMP = 2.5V |
2.42 |
2.50 |
2.58 |
V |
Input Bias Current |
VFB = 0V |
- |
-0.3 |
-2.0 |
µA |
AVOL |
2V </= VO </= 4V |
65 |
90 |
- |
dB |
Unity Gain Bandwidth |
Note 2 |
0.7 |
1.0 |
- |
MHz |
PSRR |
12V </= VCC </= 25V |
60 |
70 |
- |
dB |
Output Sink Current |
VFB = 2.7V, VCOMP = 1.1V |
2 |
6 |
- |
mA |
Output Source Current |
VFB = 2.3V, VCOMP = 5V |
-0.5 |
-0.8 |
- |
mA |
VOUT High |
VFB = 2.3V, RL = 15k to GND |
5 |
6 |
- |
V |
VOUT Low |
VFB = 2.7V, RL = 15k to Pin8 |
- |
0.7 |
1.1 |
V |
Current Sense Section |
Gain |
Note 3, Note 4 |
2.85 |
3.00 |
3.15 |
V/V |
Maximum Input Signal |
VCOMP = 5V, Note 3 |
0.9 |
1.0 |
1.1 |
V |
PSRR |
12V </= VCC </= 25V, Note 3 |
- |
70 |
- |
dB |
Input Bias Current |
|
- |
-2 |
-10 |
µA |
Delay to Output |
TJ = +25°C, Note 2 |
- |
150 |
300 |
ns |
Output Section |
Output Low Level |
ISINK = 20mA |
- |
0.1 |
0.4 |
V |
ISINK = 200mA |
- |
1.5 |
2.2 |
V |
Output High Level |
ISOURCE = 20mA |
13.0 |
13.5 |
- |
V |
ISOURCE = 200mA |
12.0 |
13.5 |
- |
V |
Rise Time |
TJ = +25°C, CL = 1nF, Note 2 |
- |
50 |
150 |
ns |
Fall Time |
TJ = +25°C, CL = 1nF, Note 2 |
- |
50 |
150 |
ns |
Total Standby Current |
Start-Up Current |
|
- |
0.5 |
1.0 |
mA |
Operating Supply Current |
VFB = VSENSE = 0V, RT = 10k, CT = 3.3nF |
- |
11 |
17 |
mA |
VCC Zener Voltage |
ICC = 25mA |
- |
34 |
- |
V |
PWM Section |
Maximum Duty Cycle |
|
46 |
48 |
50 |
% |
Minimum Duty Cycle |
|
- |
- |
0 |
% |
Under-Voltage Lockout Section |
Start Threshold
NTE7098
NTE7099 |
|
14.5 7.8 |
16.0 8.4 |
17.5 9.0 |
V V |
Minimum Operating Voltage
NTE7098
NTE7099 |
After Turn-On
|
8.5 7.0 |
10.0 7.9 |
11.5 8.2 |
V V |
Note 1. | Adjust VCC above the start threshold before setting at 15V. |
Note 2. | These parameters, although guaranteed, are not 100% tested in production. |
Note 3. | Parameter measured at trip point of latch with VPIN2 = 0. |
Note 4. | Gain defined as: A = VCOMP / VSENSE; 0 </= VPin3 </= 0.8V. |
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NTE-Austauschhalbleiter (früher ECG Philips und Sylvania) sind sorgfältig
ausgesuchte und erprobte Halbleiter, die einen sicheren Ersatz
für Originaltypen verschiedenster Hersteller und Ursprünge für
fast alle Applikationsbereiche im Wartungsdienst bieten.
Alle NTE-Austausch-Halbleiter sind einzeln in durchsichtigen
Plastikbeuteln verpackt, auf welchen die wichtigsten Daten
vermerkt sind.