Rainbow-electronics MAX8645Y Manual de usuario descargar pdf (Pagina 7)

MAX8645X/MAX8645Y

1x/1.5x/2x White LED Charge Pumps with Two

LDOs in 4mm x 4mm TQFN

_______________________________________________________________________________________ 7

SINGLE-WIRE DIMMING RESPONSE

MAX8645Y toc19

5V/div

500mA/div

2V/div

ENM1,

ENM2

OUT

10ms/div

LDO DROPOUT VOLTAGE

vs. OUTPUT CURRENT

MAX8645Y toc20

OUTPUT CURRENT (mA)

DROPOUT VOLTAGE (mV)

15010050

100

120

140

0200

LDO OUTPUT VOLTAGE

ACCURACY vs. OUTPUT CURRENT

MAX8645Y toc21

OUTPUT CURRENT (mA)

OUTPUT VOLTAGE ACCURACY (%)

15010050

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

1.0

-1.0

0200

LOAD-TRANSIENT RESPONSE

MAX8645Y toc22

50mV/div

AC-COUPLED

100mA

1mA

LDO_

10μs/div

LDO_

= 2.6V

LOAD-TRANSIENT RESPONSE

NEAR DROPOUT

MAX8645Y toc23

50mV/div

AC-COUPLED

100mA

1mA

LDO_

10μs/div

- V

OUT

= 77mV, V

LDO_

= 2.6V

Typical Operating Characteristics (continued)

= V

EN_

= 3.6V, circuit of Figure 2, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

MAX8645X/MAX8645Y 1
Two LDOs in 4mm x 4mm TQFN 1
LDOs in 4mm x 4mm TQFN 10
MAX8645YETI 13

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Rainbow-electronics MAX8645Y Manual de usuario Pagina 7

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