Rainbow-electronics MAX686 Manuale Utente Pagina 6

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MAX686
DAC-Controlled Boost/Inverter
LCD Bias Supply with Internal Switch
6 _______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(Circuits of Figures 1 and 2, V
CC
= V
DD
= V
IN
= +5V, L1 = 22µH, SHDN = V
CC
, C
REF
= 0.1µF, T
A
= +25°C, unless otherwise noted.)
V
OUT
50mV/div
AC-COUPLED
3V
5V
LINE-TRANSIENT RESPONSE
(ISET = V
CC
)
MAX686 TOC10
5ms/div
V
CC
= V
DD
=V
IN
V
OUT
50mV/div
AC-COUPLED
3V
5V
LINE-TRANSIENT RESPONSE
(ISET = GND)
MAX686 TOC10A
5ms/div
V
OUT
= 24V
I
LOAD
= 5mA
V
CC
= V
DD
= V
IN
V
OUT
I
OUT
20mV/div
AC-COUPLED
100µA
5mA
LOAD-TRANSIENT RESPONSE
(ISET = GND)
MAX686 TOC11
2ms/div
V
OUT
= 24V
V
OUT
I
OUT
50mV/div
AC-COUPLED
100µA
5mA
LOAD-TRANSIENT RESPONSE
(ISET = V
CC
)
MAX686 TOC12
2ms/div
V
OUT
= 24V
V
OUT
5V/div
5V
18.7V
POWER-UP RESPONSE
(POSITIVE CONFIGURATION)
MAX686 TOC13A
500µs/div
SHDN
2V/div
I
SET
= V
CC
R
L
= 4.7k
V
OUT
5V/div
5V
18.7V
POWER-DOWN RESPONSE
(POSITIVE CONFIGURATION)
MAX686 TOC13B
5ms/div
SHDN
2V/div
I
SET
= V
CC
R
L
= 4.7k
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