MAX1779 Maxim, MAX1779 Datasheet - Page 2

• Manufacturer Part Number: MAX1779
• Description: Low-Power 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
unless otherwise noted. Typical values are at T
Low-Power 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
FB Fault Trip Level
POSITIVE CHARGE PUMP
V
IN
SUPP
_______________________________________________________________________________________
= +3.0V,
Input Supply Range
PARAMETER
SHDN = IN, V
SUPP
= V
SYMBOL
R
V
V
V
I
I
f
LX(ON)
SUPN
SUPN
SUPP
UVLO
V
MAIN
OSC
I
SUPP
V
I
I
I
LIM
FB
LX
IN
FB
IN
= +10V, TGND = PGND = GND, C
A
V
V
V
V
V
V
V
V
I
I
V
Falling edge
= +25°C.)
MAIN
LX
IN
FB
FBP
FBN
FB
LX
SHDN
SHDN
SHDN
SUPN
SUPP
= 100mA
rising, 40mV hysteresis (typ)
= +13V
= V
= +1.25V, INTG = GND
IN
= +1.5V
= -0.1V
= 0 to 50mA, V
= 0, V
= 0, V
= 0, V
+ 0.3V)
+ 0.3V)
+ 0.3V)
FBP
= +1.5V, V
IN
SUPP
SUPN
CONDITIONS
= +5V
= +13V
= +13V
MAIN
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
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ..........755mW
MAX1779EUE ..................................................-40°C to +85°C
= +5V
= -0.2V
REF
= 0.22µF, C
INTG
1.235
MIN
1.07
212
350
V
-50
2.7
2.2
2.7
79
IN
A
= 2200pF, T
= +70°C)
1.248
TYP
0.25
0.25
0.01
250
320
450
250
2.4
0.5
0.1
0.1
0.1
0.1
0.1
1.0
1.1
85
A
1.261
MAX
0.55
0.55
1.14
= 0°C to +85°C,
288
650
5.5
2.6
2.0
10
10
10
13
50
92
20
13
1
UNITS
% / V
kHz
mA
mA
mA
mA
mA
µA
µA
µA
nA
µA
%
µs
%
Ω
V
V
V
V
V
V