MAX686EEE+ Maxim Integrated Products, MAX686EEE+ Datasheet - Page 4

• Manufacturer Part Number: MAX686EEE+
• Description: IC SUPPLY LCD BIAS INV 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost), Invertingr

Specifications of MAX686EEE+

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: ±27.5V
• Current - Output: 100mA
• Frequency - Switching: 300kHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 667mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DAC-Controlled Boost/Inverter
LCD Bias Supply with Internal Switch
ELECTRICAL CHARACTERISTICS
(V
Note 1: The MAX686 requires a supply voltage at V
Note 2: The DAC output is set to its midpoint value at power-on.
Note 3: The DAC setting is guaranteed to remain valid as long as V
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
4
LX
REFERENCE AND FB INPUT
POWER OK COMPARATOR, LCDON OUTPUT
DAC OUTPUT (Notes 2, 3)
LOGIC INPUTS: POL, ISET, UP,
Supply Voltage (Note 1)
Input Voltage
Supply Current
Shutdown Current
V
LX Voltage Range
LX Switch Current Limit
LX On-Resistance
LX Leakage Current
Maximum LX On-Time
Minimum LX Off-Time
REF Output Voltage
REF Load Regulation
FB Set Point
FB Input Bias Current
POK Threshold
POK Input Current
LCDON Sink Current
Full-Scale Output Voltage
Zero-Scale Output Voltage
Resolution
Mid-Scale Accuracy
Input Low Level
Input High Level
Input Bias Current
CC
CC
_______________________________________________________________________________________
= V
Undervoltage Lockout
DD
inductor can vary from +0.8V to +27.5V, depending on circuit operating conditions.
PARAMETER
= V
IN
= +5V, C
REF
= 0.1µF, T
DN, SHDN
SYMBOL
V
I
CC
I
CC
V
I
LXLEAK
I
V
V
LCDON
I
SHDN
I
MSA
t
LOCK
V
R
V
V
V
BIAS
V
t
POK
V
OFF
I
V
I
POK
ON
REF
LX
FB
+ I
, V
FB
ZS
LX
LX
FS
IN
IH
IL
A
DD
DD
= -40°C to +85°C, unless otherwise noted.) (Note 4)
Voltage applied to L1
POL = GND, VFB = 1.3V, I
SHDN = GND
Rising or falling
ISET = V
ISET = GND
V
V
V
POL = GND, V
POL = V
POL = GND, V
POL = V
V
I
POL = GND
POL = V
V
V
-50µA < I
0µA < I
Mid-scale = V
2.7V < V
2.7V < V
REF
CC
CC
LX
CC
POK
LCDON
CC
= 28V
= V
= V
= V
= 0µA to 25µA, C
= V
rising
DACOUT
DD
DD
DD
CC
CC
CC
CC
CC
CC
= 0.4V, V
DACOUT
DD
, V
, V
= 5V, I
= 3.3V, I
= 2.7V to 5.5V, no load
= V
= V
between +2.7V and +5.5V; however, the voltage that supplies the
FB
FB
REF
FB
FB
CONDITIONS
DD
DD
< 20µA
< 0.15V
> 0.4V
> 1.2V
< 0.8V
< 0µA
x 32/63
CC
LX
POK
< 5.5V
< 5.5V
LX
= 100mA
is greater than the V
REF
= 1.25V
= 100mA
DACOUT
= 0.1µF
= 0mA
CC
DAC Reset Threshold.
V
2.10
1.22
1.22
1.05
0.02
MIN
REF
2.7
0.8
0.4
0.2
7.5
0.7
2.8
3.8
3.8
-15
2.4
-3
2
0
6
-
TYP
V
V
MAX
2.65
12.5
1.28
1.28
1.20
REF
0.02
±50
±50
125
5.5
0.6
0.3
1.2
1.6
1.5
1.3
4.2
6.2
6.2
0.7
OUT
±1
28
10
15
15
4
3
+
UNITS
Bits
mV
mV
mA
mV
µA
µA
µA
nA
nA
µA
µs
µs
%
V
V
V
V
A
V
V
V
V
V
V