Datasheet

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TYPICAL CHARACTERISTICS
−50 50
5.0
4.5
2.5
2.0
1.5
0.5
0.0
−25 0 25 75 100
4.0
1.0
3.5
3.0
UVLOon
UVLOoff
UVLOhysteresis
t − Temperature − °C
125
V
UVLO
−
UVLOThresholds
−
V
−50 50 125−25 0 25 75 100
3.24
3.26
3.28
3.30
3.32
3.34
3.36
t − Temperature − °C
3V3
−
ReferenceV
oltage −
V
UCD8220
SLUS652D – MARCH 2005 – REVISED OCTOBER 2006
PIN NUMBER
UCD8220
PIN NAME I/O FUNCTION
HTSSOP-16 QFN-16
(PWP) (RSA)
Supply pin provides power for the output drivers. It is not connected internally to the VDD supply
PVDD 13 12
rail. The bypass capacitor for this pin should be returned to PGND.
Supply input pin to power the control circuitry. Bypass the pin with at least 4.7 µ F of
VDD 14 13 I
capacitance, returned to AGND.
- - I Input to the internal start-up circuitry rated to 110 V. This pin connects directly to the input power
VIN
rail.
UCD8220
UVLO THRESHOLD 3V3 REFERENCE VOLTAGE
vs vs
TEMPERATURE TEMPERATURE
Figure 5. Figure 6.
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