MCP18480 datasheet(29/64 Pages) MICROCHIP

29 / 64 page

 2003 Microchip Technology Inc.

DS20091B-page 29

MCP18480

FIGURE 2-28:

UVD Current vs. Supply

Current (IPOS).

FIGURE 2-29:

UVHYS Pin Impedance vs.

Temperature.

Data taken with the minimum following conditions:

IPOS = 5 mA

(Enables VPOS at its self regulating voltage)

VREFIN = 2.5V, ISET = 10 µA

Note 1:

VUVTH < VVREFIN

VOVTH < VVREFIN

VSENSE = VVNEG

VVFB = VVNEG

VDRAINTH = VVNEG

VOVO = VVNEG

VCL = VVREFIN

VENABLE = 5V (open)

VRESTART = VVNEG (open)

-10.15

-10.10

-10.05

-10.00

-9.95

-9.90

15202530

Supply Current, IPOS (mA)

TA = -40°C

TA = +70°C

TA = +25°C

TA = 0°C

TA = +85°C

Data taken with the minimum following conditions:

IPOS = 5 mA

(Enables VPOS at its self-regulating voltage)

VREFIN = 2.5V, ISET = 10 µA

Note 1:

VUVTH < VVREFIN

VOVTH < VVREFIN

VSENSE = VVNEG

VVFB = VVNEG

VDRAINTH = VVNEG

VOVO = VVNEG

VCL = VVREFIN

VENABLE = 5V (open)

VRESTART = VVNEG (open)

Data taken with the minimum following conditions:

IPOS = 5 mA

(Enables VPOS at its self-regulating voltage)

UVTH < VREFIN, UVTH > VREFIN

VREFIN = 2.5V, ISET = 10 µA

Note 1:

VOVTH < VVREFIN

VSENSE = VVNEG

VVFB = VVNEG

VDRAINTH = VVNEG

VOVO = VVNEG

VCL = VVREFIN

VENABLE = 5V (open)

VRESTART = VVNEG (open)

5000

10000

15000

20000

25000

30000

35000

40000

45000

-40

-20

20406080

Temperature (°C)

OFF

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