MAX1779 Maxim, MAX1779 Datasheet - Page 4

• Manufacturer Part Number: MAX1779
• Description: Low-Power Triple-Output TFT LCD DC-DC Converter
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS
(V
unless otherwise noted.) (Note 1)
Low-Power Triple-Output TFT LCD DC-DC
Converter
4
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
LX Switch On-Resistance
LX Leakage Current
LX Current Limit
FB Fault Trip Level
POSITIVE CHARGE PUMP
SUPP Input Supply Range
FBP Regulation Voltage
FBP Input Bias Current
DRVP PCH On-Resistance
DRVP NCH On-Resistance
FBP Power-Ready Trip Level
NEGATIVE CHARGE PUMP
SUPN Input Supply Range
FBN Regulation Voltage
FBN Input Bias Current
DRVN PCH On-Resistance
DRVN NCH On-Resistance
FBN Power-Ready Trip Level
REFERENCE
Reference Voltage
Reference Undervoltage
IN
_______________________________________________________________________________________
= +3.0V, SHDN = IN, V
PARAMETER
SUPP
= V
SYMBOL
R
V
V
SUPN
V
V
I
I
V
f
LX(ON)
V
V
SUPN
I
SUPP
I
UVLO
V
I
SUPN
MAIN
OSC
SUPP
V
FBN
I
I
FBP
I
LIM
FBN
FBP
REF
FB
LX
IN
FB
IN
= +10V, TGND = PGND = GND, C
V
V
V
V
V
V
V
V
I
V
Falling edge
V
V
V
Rising edge
V
V
V
Falling edge
-2µA < I
V
LX
IN
FB
FBP
FBN
FB
LX
FBP
FBP
FBP
FBN
FBN
FBN
REF
SHDN
SHDN
SHDN
= 100mA
rising, 40mV hysteresis (typ)
= +13V
= V
= +1.25V, INTG = GND
= +1.5V
= +1.5V
= +1.200V
= +1.300V
rising
= -0.1V
= -0.05V
= +0.050V
= -0.050V
= 0, V
= 0, V
= 0, V
FBP
REF
= +1.5V, V
< 50µA
IN
SUPP
SUPN
CONDITIONS
= +5V
= +13V
= +13V
FBN
= -0.2V
REF
= 0.22µF, C
INTG
1.225
1.223
MIN
1.07
1.20
1.09
195
350
V
2.7
2.2
-50
2.7
-50
2.7
-50
-50
0.9
79
20
20
80
IN
= 2200pF, T
A
= -40°C to +85°C,
1.271
1.269
MAX
0.55
0.55
1.14
1.30
1.16
305
700
165
5.5
2.6
2.0
1.2
10
10
10
13
50
92
20
13
50
10
13
50
50
10
1
5
5
UNITS
kHz
mA
mA
mA
mA
mV
mV
µA
µA
µA
kΩ
kΩ
nA
µA
nA
nA
%
Ω
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V