MAX1748 Maxim, MAX1748 Datasheet - Page 2

• Manufacturer Part Number: MAX1748
• Description: Triple-Output TFT LCD DC-DC Converter
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
IN, SHDN, TGND to GND .........................................-0.3V to +6V
DRVN to GND .........................................-0.3V to (V
DRVP to GND..........................................-0.3V to (V
PGND to GND.....................................................................±0.3V
RDY to GND ...........................................................-0.3V to +14V
LX, SUPP, SUPN to PGND .....................................-0.3V to +14V
INTG, REF, FB, FBN, FBP to GND ...............-0.3V to (V
ELECTRICAL CHARACTERISTICS
(V
otherwise noted. Typical values are at T
Triple-Output TFT LCD DC-DC Converter
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
Input Supply Range
Input Undervoltage Threshold
IN Quiescent Supply Current
SUPP Quiescent Current
SUPN Quiescent Current
IN Shutdown Current
SUPP Shutdown Current
SUPN Shutdown Current
MAIN BOOST CONVERTER
Output Voltage Range
FB Regulation Voltage
FB Input Bias Current
Operating Frequency
Oscillator Maximum Duty Cycle
Load Regulation
Line Regulation
Integrator Gm
LX Switch On-Resistance
LX Leakage Current
LX Current Limit
Maximum RMS LX Current
Soft-Start Period
FB Fault Trip Level
POSITIVE CHARGE PUMP
V
IN
SUPP
_______________________________________________________________________________________
= +3.0V, SHDN = IN, V
Input Supply Range
PARAMETER
SUPP
= V
SYMBOL
R
I
SUPN
V
LX(MAX)
V
V
I
I
SUPN
f
LX(ON)
SUPP
UVLO
V
V
MAIN
OSC
SUPP
I
t
I
I
A
FB
LX
SS
IN
FB
IN
= +25°C.)
= 10V, TGND = PGND = GND, C
V
V
V
V
V
V
V
T
V
I
I
V
Phase I = soft-start (1.0ms)
Phase II = soft-start (1.0ms)
Phase III = soft-start (1.0ms)
Phase IV = fully on (after 3.0ms)
Power-up to the end of Phase III
MAIN
LX
A
IN
FB
FBP
FBN
FB
LX
SHDN
SHDN
SHDN
SUPN
SUPP
= 0°C to +85°C
= 100mA
rising, 40mV hysteresis (typ)
= 13V
= V
= 1.25V, INTG = GND
IN
= 1.5V
= -0.1V
= 0 to 200mA, V
= 0, V
= 0, V
= 0, V
+ 0.3V)
+ 0.3V)
+ 0.3V)
FBP
= 1.5V, V
IN
SUPP
SUPN
CONDITIONS
= 5V
= 13V
= 13V
Continuous Power Dissipation (T
Operating Temperature Range
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
FBN
MAIN
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ..........755mW
MAX1748EUE .................................................-40°C to +85°C
= -0.2V
REF
= 10V
= 0.22µF, C
INTG
= 470pF, T
1.235
0.275
MIN
0.85
1.07
V
-50
2.7
2.2
1.1
2.7
78
IN
A
= +70°C)
3072 /
1.248
0.380
f
TYP
0.35
0.01
0.75
1.12
320
A
OSC
2.4
0.6
0.4
0.4
0.1
0.1
0.1
0.2
0.1
1.5
1.1
85
1
1
= 0°C to +85°C, unless
1.261
0.500
MAX
1.15
1.14
5.5
2.6
0.8
0.8
0.7
2.0
10
10
10
13
50
90
20
13
1
UNITS
µmho
% / V
MHz
mA
mA
mA
µA
µA
µA
nA
µA
%
%
Ω
A
A
V
V
V
V
V
V
s