Rainbow-electronics MAX1664 Bedienungsanleitung PDF herunterladen (Seite 4)

MAX1664

Active-Matrix Liquid Crystal Display

(AMLCD) Supply

4 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

BPCLK

= 22.5kHz, FPLL = GND, L1 = 3.3µH, L2 = 4.7µH, T

= +25°C, unless otherwise noted.)

100

1 10 100 1000

DC-DC 1 EFFICIENCY vs. LOAD CURRENT

OUT1

= +5V)

MAX1664 TOC01

LOAD CURRENT (mA)

EFFICIENCY (%)

= 3V

= 4.5V

100

1 10 100

DC-DC 2 EFFICIENCY vs. LOAD CURRENT

OUT2-

= -5V)

MAX1664 TOC02

LOAD CURRENT (mA)

EFFICIENCY (%)

OUT2+

UNLOADED

= 5V

= 3.3V

100

1 10 100

DC-DC 2 EFFICIENCY vs. LOAD CURRENT

OUT2+

= +15V)

MAX1664 TOC03

LOAD CURRENT (mA)

EFFICIENCY (%)

OUT2-

UNLOADED

= 5V

= 3.3V

10mV/div

OUT1

RIPPLE

MAX1664 TOC04

OUT1

= 250mA, L = 3.3µH

500ns/div

OUT2

100mV/

div

OUT2+

RIPPLE

MAX1664 TOC05

2µs/div

OUT2+

= 15V, V

= 3.3V, I

LOAD

= 9mA,

OUT2

= 0.22µF, AC COUPLED

OUT2-

50mV/

div

OUT2-

RIPPLE

MAX1664 TOC06

5µs/div

OUT2-

= -5V, V

= 3.3V, I

LOAD

= 5mA,

OUT2-

= 0.47µF, AC COUPLED

1 2 3 4 5 6 7 8 9 ... 15 16

(AMLCD) Supply 1

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