Electrical characteristics (continued) – Rainbow Electronics MAX686 User Manual
Page 3
MAX686
DAC-Controlled Boost/Inverter
LCD Bias Supply with Internal Switch
_______________________________________________________________________________________
3
I
REF
= 0µA to 25µA, C
REF
= 0.1µF
V
CC
= V
DD
= 2.7V to 5.5V, no load
0µA < I
DACOUT
< 20µA
-50µA < I
DACOUT
< 0µA
I
REF
= 0µA to 50µA, C
REF
= 0.47µF
CONDITIONS
mV
1
10
REF Load Regulation
V
1.225
1.250
1.275
V
REF
REF Output Voltage
mV
0
15
V
ZS
Zero-Scale Output Voltage
V
V
REF
-
V
REF
V
REF
+
0.015
0.015
V
FS
Full-Scale Output Voltage
1.5
nA
±50
I
FB
FB Input Bias Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
DD
= V
IN
= +5V, C
REF
= 0.1µF,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values are at T
A
= +25°C.)
POL = GND
POL = V
CC
V
1.225
1.250
1.275
V
FB
FB Set Point
mV
-15
0
15
nA
±50
I
POK
POK Input Current
V
POK
rising
V
1.100
1.125
1.150
V
POK
POK Threshold
mV
12
POK Hysteresis
V
LCDON
= 0.4V, V
POK
= 1.25V
mA
2
6
I
LCDON
LCDON Sink Current
V
LCDON
= 28V, V
POK
= GND
µA
0.02
1
LCDON Leakage Current
bits
6
Resolution
Mid-scale = V
REF
x 32/63
%
-2
2
MSA
Mid-Scale Accuracy
Guaranteed monotonic
LSB
-1
1
DNL
Differential Nonlinearity
k
Ω
1.5
R
DACOUT
Output Resistance in Shutdown
2.7V < V
CC
= V
DD
< 5.5V
V
0.7
V
IL
Input Low Level
2.7V < V
CC
= V
DD
< 5.5V
V
2.4
V
IH
Input High Level
µA
±1
I
BIAS
Input Bias Current
UP, DN, T
A
= +25°C
µs
1
t
PWH
Pulse Width High
UP, DN, T
A
= +25°C
µs
1
t
PWL
Pulse Width Low
UP, DN, T
A
= +25°C
µs
1
t
PWS
Pulse Separation
REFERENCE AND FB INPUT
POWER OK COMPARATOR,
LCDON
OUTPUT
DAC OUTPUT
(Notes 2, 3)
LOGIC INPUTS: POL, ISET, UP, DN,
SHDN