Rainbow-electronics MAX867 Manual do Utilizador descarregar pdf (Página 4)

MAX866/MAX867

3.3V/5V or Adjustable-Output,

Single-Cell DC-DC Converters

4 _______________________________________________________________________________________

____________________________Typical Operating Characteristics (continued)

(Circuits of Figure 2, T

= +25°C, unless otherwise noted.)

1.5

1.4

1.3

1.2

1.1

1.0

0.8

0.5

0.1 1 100

START-UP INPUT VOLTAGE vs. LOAD CURRENT

OUT

= 3.3V)

0.7

0.6

0.9

MAX186-14AMAX866/67-07

LOAD CURRENT (mA)

START-UP INPUT VOLTAGE (V)

100µH

47µH

220µH

330µH

1mH

1.5

1.4

1.3

1.2

1.1

1.0

0.8

0.5

0.1 1 100

START-UP INPUT VOLTAGE vs. LOAD CURRENT

OUT

= 5V)

0.7

0.6

0.9

MAX186-14A

LOAD CURRENT (mA)

START-UP INPUT VOLTAGE (V)

100µH

47µH

220µH

330µH

MAX866/67-08



1 10 1000

INPUT VOLTAGE vs. LOAD CURRENT

OUT

= 3.3V)

MAX186-14AMAX866/67-09

LOAD CURRENT (mA)

INPUT VOLTAGE (V)

100

100µH

47µH

22µH

330µH

1mH

3.0

2.5

1.5

1.0

0.5

2.0

1 10 1000

INPUT VOLTAGE vs. LOAD CURRENT

OUT

= 5V)

MAX186-14AMAX866/67-10

LOAD CURRENT (mA)

INPUT VOLTAGE (V)

3.0

2.5

1.5

1.0

0.5

2.0

100

22µH

330µH

47µH

100µH



A: 3.3V OUTPUT VOLTAGE, AC COUPLED 20mV/div

B: INPUT VOLTAGE (0.9V AND 1.4V) 500mV/div

LOAD

= 10mA, C

OUT

= 47µF

MAX866 LINE-TRANSIENT RESPONSE

(3.3V MODE)

1ms/div



REFERENCE VOLTAGE

vs. REFERENCE CURRENT

MAX866/67-11

REFERENCE LOAD CURRENT (µA)

REF

LOAD REGULATION (mV)

100 200

50 150 250

A: 5.0V OUTPUT VOLTAGE, AC COUPLED 20mV/div

B: INPUT VOLTAGE (0.9V AND 1.4V) 500mV/div

LOAD

= 10mA, C

OUT

= 47µF

MAX866 LINE-TRANSIENT RESPONSE

(5V MODE)

1ms/div

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

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