MAX1664 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX1664 Datasheet PDF : 16 Pages
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Active-Matrix Liquid Crystal Display
(AMLCD) Supply
__________________________________________Typical Operating Characteristics
(fBPCLK = 22.5kHz, FPLL = GND, L1 = 3.3µH, L2 = 4.7µH, TA = +25°C, unless otherwise noted.)
DC-DC 1 EFFICIENCY vs. LOAD CURRENT
(VOUT1 = +5V)
100
90 VIN = 3V
80
70
60
VIN = 4.5V
50
40
30
20
10
0
1
10
100
1000
LOAD CURRENT (mA)
DC-DC 2 EFFICIENCY vs. LOAD CURRENT
(VOUT2- = -5V)
100
90
VOUT2+ UNLOADED
80
70
VIN = 3.3V
60
50
40
VIN = 5V
30
20
10
0
1
10
100
LOAD CURRENT (mA)
DC-DC 2 EFFICIENCY vs. LOAD CURRENT
(VOUT2+ = +15V)
100
90
80
VIN = 5V
70
60
VIN = 3.3V
50
40
30
20
10
0
1
VOUT2- UNLOADED
10
100
LOAD CURRENT (mA)
VOUT1 RIPPLE
10mV/div
500ns/div
IOUT1 = 250mA, L = 3.3µH
VOUT2+ RIPPLE
VOUT2- RIPPLE
VOUT2
100mV/
div
VOUT2-
50mV/
div
2µs/div
VOUT2+ = 15V, VIN = 3.3V, ILOAD = 9mA,
COUT2 = 0.22µF, AC COUPLED
5µs/div
VOUT2- = -5V, VIN = 3.3V, ILOAD = 5mA,
COUT2- = 0.47µF, AC COUPLED
4 _______________________________________________________________________________________
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