top267vg-tl Power Integrations, Inc., top267vg-tl Datasheet - Page 28

• Manufacturer Part Number: top267vg-tl
• Description: Integrated Off-line Switcher With Ecosmart Technology For Highly Effcient Power Supplies
• Manufacturer: Power Integrations, Inc.

NOTES:
A. Derived during test from the parameters DC
B. For specifications with negative values, a negative temperature coefficient corresponds to an increase in magnitude with
C. Guaranteed by characterization. Not tested in production.
D. For externally adjusted current limit values, please refer to Figures 34 and 35 (Current Limit vs. External Current Limit Resistance)
E. I
F. The device will start up at 18 V
G. Breakdown voltage may be checked against minimum BV
Rev. B 03/10
28
increasing temperature, and a positive temperature coefficient corresponds to a decrease in magnitude with increasing
temperature.
in the Typical Performance Characteristics section. The tolerance specified is only valid at full current limit.
connection. See f
below 0 °C. For reliable start up at 18 V in sub zero temperatures, designers must ensure that circuit capacitors meet recom-
mended capacitance values.
exceeding minimum BV
2
f calculation is based on typical values of I
TOP264-271
OSC
specification for detail.
DSS
.
DC
drain voltage. The capacitance of electrolytic capacitors drops significantly at temperatures
LIMIT
MAX
, I
and f
B
and I
OSC,
C(OFF)
i.e. I
DSS
LIMIT(TYP)
at 132 kHz.
specification by ramping the DRAIN pin voltage up to but not
2
× f
OSC
, where f
OSC
= 66 kHz or 132 kHz depending on F pin
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