MAX1779 Maxim, MAX1779 Datasheet - Page 3

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

ELECTRICAL CHARACTERISTICS (continued)
(V
unless otherwise noted. Typical values are at T
Operating Frequency
FBP Regulation Voltage
FBP Input Bias Current
DRVP PCH On-Resistance
DRVP NCH On-Resistance
FBP Power-Ready Trip Level
FBP Fault Trip Level
Maximum RMS DRVP Current
NEGATIVE CHARGE PUMP
V
Operating Frequency
FBN Regulation Voltage
FBN Input Bias Current
DRVN PCH On-Resistance
DRVN NCH On-Resistance
FBN Power-Ready Trip Level
FBN Fault Trip Level
Maximum RMS DRVN Current
REFERENCE
Reference Voltage
Reference Undervoltage
Threshold
LOGIC SIGNALS
SHDN Input Low Voltage
SHDN Input High Voltage
SHDN Input Current
RDY Output Low Voltage
RDY Output High Voltage
IN
SUPN
= +3.0V, SHDN = IN, V
Input Supply Range
PARAMETER
Low-Power Triple-Output TFT LCD DC-DC
_______________________________________________________________________________________
SUPP
= V
SYMBOL
V
I
V
V
V
SUPN
I
SHDN
I
SUPN
FBN
FBP
FBN
FBP
REF
= +10V, TGND = PGND = GND, C
A
V
V
V
Rising edge
Falling edge
V
V
V
Falling edge
Rising edge
-2µA < I
V
0.25V hysteresis (typ)
I
V
= +25°C.)
SINK
FBP
FBP
FBP
FBN
FBN
FBN
REF
RDY
= +1.5V
= +1.200V
= +1.300V
rising
= 2mA
= -0.05V
= +0.050V
= -0.050V
= +13V
REF
< 50µA
CONDITIONS
REF
= 0.22µF, C
INTG
1.231
1.20
1.09
MIN
-50
2.7
-50
-50
0.9
2.1
20
20
80
= 2200pF, T
Converter
0.5 ×
0.5 ×
f
f
TYP
1.25
1.13
1.11
1.25
1.05
0.01
0.25
0.01
120
140
OSC
1.5
0.1
OSC
1.5
0.1
3
0
3
A
1.269
MAX
1.30
1.16
= 0°C to +85°C,
165
1.2
0.9
0.5
50
10
13
50
50
10
5
5
1
1
UNITS
mV
mV
mV
µA
µA
kΩ
kΩ
Hz
nA
Hz
nA
V
V
Ω
Ω
Ω
Ω
V
V
V
A
V
A
V
V
V
3