MAX8631XETI(2006) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX8631XETI
(Rev.:2006)

1x/1.5x/2x White LED Charge Pump with Two LDOs in 4mm x 4mm Thin QFN

Maxim Integrated 

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

LDOs in 4mm x 4mm Thin QFN

Typical Operating Characteristics (continued)

(VIN = VEN_ = 3.6V, circuit of Figure 1, TA = +25°C, unless otherwise noted.)

SINGLE-WIRE DIMMING RESPONSE

MAX8631X toc19

VENM1,

VENM2

IOUT

5V/div

0V

500mA/div

0A

VOUT

2V/div

0V

10ms/div

LDO OUTPUT VOLTAGE

ACCURACY vs. OUTPUT CURRENT

1.0

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

-1.0

0

50

100

150

200

OUTPUT CURRENT (mA)

LDO DROPOUT VOLTAGE

vs. OUTPUT CURRENT

140

120

100

80

60

40

20

0

0

50

100

150

200

OUTPUT CURRENT (mA)

VLDO_

LOAD-TRANSIENT RESPONSE

MAX8631X toc22

VLDO_ = 2.6V

50mV/div

AC-COUPLED

100mA

ILDO_

1mA

10µs/div

LOAD-TRANSIENT RESPONSE

NEAR DROPOUT

MAX8631X toc23

VIN - VOUT = 77mV, VLDO_ = 2.6V

VLDO_

50mV/div

AC-COUPLED

ILDO_

10µs/div

100mA

1mA

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