MAX753 Maxim, MAX753 Datasheet - Page 3

• Manufacturer Part Number: MAX753
• Description: CCFL Backlight and LCD Contrast Controllers
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
T
Note 1: Maximum shutdown current occurs at BATT = LX = 0V.
Note 2: Timing specifications are guaranteed by design and not production tested.
A
Feedback Voltage (CFB)
LCD CONTROLLER
TIMING (Note 2)
Feedback-Amplifier Input Bias Current
Feedback-Amplifier Unity-Gain Bandwidth
Feedback-Amplifier Slew Rate
Feedback-Amplifier Output Current
Switch On-Time
Switching Period
DAC Resolution
MAX753 Feedback Voltage (REF-LFB)
MAX754 Feedback Voltage (LFB)
LFB Input Leakage Current
BATT Input Current
LX Input Current
Reset Pulse Width (t
Reset Setup Time (t
Reset Hold Time (t
CADJ, LADJ High Width (t
CADJ, LADJ Low Width (t
CADJ Low to CON Low or
LADJ Low to LON Low (t
DD
= T
= 5V, BATT = 15V, CON = LON = 5V, LX = GND = PGND = 0V, I
MIN
to T
MAX
PARAMETER
, unless otherwise noted.)
RH
RS
_______________________________________________________________________________________
R
)
)
)
SD
SL
SH
)
)
)
At full scale (DAC code = 31)
At preset DAC, CON = 0V, CADJ = 5V
(code = 15)
At zero scale (code = 0)
Source current, CFB = 0V, CC = 2.5V
Sink current, CFB = 5V, CC = 2.5V
BATT = 4V
BATT = 16V
BATT = 4V, LX = 0V
Guaranteed monotonic
At full scale (DAC code = 63)
At preset DAC, LON = 0V, LADJ = 5V
(code = 31)
At zero scale (code = 0)
At full scale (DAC code = 63)
At preset DAC, LON = 0V, LADJ = 5V
(code = 31)
At zero scale (code = 0)
LON = CON = CS = LFB = CFB = LADJ =
CADJ = LX = 0V
LON = CON = CS = LFB = CFB = LADJ =
CADJ = 0V, LX = BATT = 15V
LCD Contrast Controllers
CONDITIONS
CCFL Backlight and
REF
= 0mA, all digital input levels are 0V or 5V,
1210
1200
1210
MIN
745
320
200
893
595
905
610
110
100
100
0.5
50
35
50
2
6
0
0
1250
1240
1250
TYP
782
343
928
625
938
635
0.4
12
12
1
±100
±150
MAX
1290
1280
1290
820
365
963
655
971
660
1.5
70
20
20
5
UNITS
MHz
V/µs
Bits
mV
mV
mV
nA
µA
nA
µA
µA
µs
µs
ns
ns
ns
ns
ns
ns
3