MAX686 Maxim, MAX686 Datasheet - Page 3

• Manufacturer Part Number: MAX686
• Description: DAC-Controlled Boost/Inverter LCD Bias Supply with Internal Switch
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
REFERENCE AND FB INPUT
POWER OK COMPARATOR,
DAC OUTPUT (Notes 2, 3)
LOGIC INPUTS: POL, ISET, UP, DN, SHDN
REF Output Voltage
REF Load Regulation
FB Set Point
FB Input Bias Current
POK Threshold
POK Input Current
POK Hysteresis
LCDON Sink Current
LCDON Leakage Current
Full-Scale Output Voltage
Zero-Scale Output Voltage
Resolution
Mid-Scale Accuracy
Differential Nonlinearity
Output Resistance in Shutdown
Input Low Level
Input High Level
Input Bias Current
Pulse Width High
Pulse Width Low
Pulse Separation
CC
= V
DD
PARAMETER
= V
IN
= +5V, C
_______________________________________________________________________________________
REF
LCD Bias Supply with Internal Switch
= 0.1µF, T
LCDON OUTPUT
SYMBOL
R
I
DACOUT
LCDON
V
V
MSA
I
t
t
I
DNL
t
V
V
V
BIAS
PWH
PWS
POK
V
PWL
I
V
POK
REF
FB
FB
ZS
FS
IH
IL
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
DAC-Controlled Boost/Inverter
V
I
I
POL = GND
POL = V
V
V
V
-50µA < I
0µA < I
Mid-scale = V
Guaranteed monotonic
2.7V < V
2.7V < V
UP, DN, T
UP, DN, T
UP, DN, T
REF
REF
CC
POK
LCDON
LCDON
= V
= 0µA to 25µA, C
= 0µA to 50µA, C
rising
DACOUT
DD
CC
CC
CC
= 0.4V, V
= 28V, V
DACOUT
A
A
A
= 2.7V to 5.5V, no load
= +25°C
= +25°C
= +25°C
= V
= V
REF
CONDITIONS
DD
DD
< 20µA
POK
< 0µA
x 32/63
POK
< 5.5V
< 5.5V
REF
REF
= GND
= 1.25V
= 0.1µF
= 0.47µF
V
1.225
1.225
1.100
0.015
MIN
-15
REF
-2
-1
2
0
6
2.4
1
1
1
-
A
1.250
1.250
1.125
V
TYP
0.02
1.5
1.5
12
REF
= +25°C.)
1
0
6
V
1.275
1.275
1.150
0.015
MAX
±50
±50
REF
10
15
15
0.7
±1
1
2
1
+
UNITS
LSB
mA
bits
mV
mV
mV
mV
nA
nA
µA
k
µA
µs
µs
µs
%
V
V
V
V
V
V
3