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UTC3843A |
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| Part Number | UTC3843A |
| Manufacturer | UNISONIC TECHNOLOGIES |
| Description | The UTC UC3842A/3843A provide the necessary functions to implement off-line or DC to DC fixed frequency current mode , controlled switching circuits with a minimal external part count SOP-8 FEATURES ... |
| Features |
*Low external part count. *Low start up current ( Typical 0.12mA ) *Automatic feed forward compensation *Pulse-by-Pulse current limiting *Under-voltage lockout with hysteresis *Double pulse Suppression *High current totem pole output to drive MOSFET directly *Internally trimmed band gap reference *500kHz operation
DIP-8
BLOCK DIAGRAM
7
Vcc
Vref
8
Internal Bias 1/2Vref
5V REF
S/R
5 GND
Vref Good Logic 1/3Vref U.V.L.O CURRENT SENSE COMPARATOR R PWM LATCH S
7
Vcc
VFB COMP
2 1
ERROR AMPLIFIER 1V
6
OUTPUT
CURRENT SENSE 3
RT/CT
4
5 GND
OSCILLATOR
ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
P... |
| Document |
 UTC3843A Data Sheet
PDF 72.14KB |
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Desde 2024. D4U Semiconductor.
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