Features: *Trimmed Oscillator for Precise Frequency Control*Oscillator Frequency Guaranteed at 250kHz*Current Mode Operation to 500kHz*Automatic Feed Forward Compensation*Latching PWM for Cycle-By-Cycle Current Limiting*Internally Trimmed Reference with Undervoltage Lockout*High Current Totem Pole...
3843B: Features: *Trimmed Oscillator for Precise Frequency Control*Oscillator Frequency Guaranteed at 250kHz*Current Mode Operation to 500kHz*Automatic Feed Forward Compensation*Latching PWM for Cycle-By-C...
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PARAMETER |
SYMBOL |
VALUE |
UNIT |
Total power supply and Zener current |
(ICC + Iz) |
30 |
mA |
Output current, source or sink (note1) |
Io |
1.0 |
A |
Output energy (capacitive load per cycle) |
W |
5.0 |
J |
Current sense and voltage feedback inputs |
Vin |
-0.3 ~ +5.5 |
V |
Error Amp. Output sink current |
Io |
10 |
mA |
Power dissipation and thermal characteristics |
PD PJA |
DIP:1250 SOP: 702 DIP: 100 SOP: 178 |
mW °C/W |
Operating junction temperature |
Tj |
+150 |
°C |
Operating ambient temperature |
TA |
0 ~ +70 |
°C |
Storage temperature range |
Tstg |
-65 ~ +150 |
°C |
The @vic AV3842B/3843B are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components.
The AV3842B has UVLO thresholds 16V (on) and 10V(off), ideally suited for off-line converters. The AV3843B is tailored for lower voltage applications having UVLO thresholds of 8.5V(on) and 7.6V(off).