?2003 Microchip Technology Inc.
DS20091B-page 27
MCP18480
FIGURE 2-24:
CL pin Input Offset Voltage
vs. Temperature.
FIGURE 2-25:
SENSE Pin Input Threshold
vs. Temperature.
Data taken with the minimum following conditions:
I
POS
= 5 mA
(Enables V
POS
at its self-regulating voltage)
V
REFIN
= 2.5V, I
SET
= 10 礎
Note 1:
V
UVTH
> V
VREFIN
V
OVTH
< V
VREFIN
V
SENSE
= 25mV
V
VFB
= V
VNEG
V
DRAINTH
= V
VNEG
V
OVO
= V
VNEG
V
CL
= V
VREFIN
V
ENABLE
= 5V (open)
V
RESTART
= V
VNEG
(open)
-2.50
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
-40 -20
0
20
40
60
80
Temperature (癈)
V
SENSE
= 20 mV
V
SENSE
= 30 mV
V
SENSE
= 40 mV
Data taken with the minimum following conditions:
I
POS
= 5 mA
(Enables V
POS
at its self-regulating voltage)
V
REFIN
= 2.5V, I
SET
= 10 礎
Use TIMER pin as indicator
Note 1:
V
UVTH
> V
VREFIN
V
OVTH
< V
VREFIN
V
VFB
= V
NEG
, V
NEG
+ 250mV,
V
NEG
+500mv, V
NEG
+1V
V
DRAINTH
= V
VNEG
V
OVO
= V
VNEG
V
CL
= V
VREFIN
V
ENABLE
= 5V (open)
V
RESTART
= V
VNEG
(open)
10
15
20
25
30
35
40
45
50
55
-40
-20
0
20
40
60
80
Temperature (癈)
Vfb = 0V
Vfb = 1V
Vfb = 0.5V
Vfb = 0.25V
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