MAX8739(2006) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX8739 Datasheet PDF : 19 Pages
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TFT, LCD, DC-DC Converter with
Operational Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 2.5V, VSUP = 10V, VSRC = 28V, FREQ = CTL = IN, PGND = AGND = 0, TA = 0°C to +85°C. Typical values are at TA = +25°C,
unless otherwise noted.)
PARAMETER
CTL Input-High Voltage
CTL Input-Leakage Current
CTL-to-SRC Propagation Delay
SRC Input-Voltage Range
SRC Input Current
DRN Input Current
SRC-to-COM Switch On-
Resistance
DRN-to-COM Switch On-
Resistance
CONDITIONS
VIN = 1.8V to 2.4V
VIN = 2.4V to 5.5V
CTL = AGND or IN
COM falling, no load on COM
COM rising, no load on COM
VDRN = 8V, CTL = AGND, VDEL = 1.5V
VDRN = 8V, CTL = IN, VDEL = 1.5V
VDRN = 8V, CTL = AGND, VDEL = 1.5V
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
MIN TYP MAX UNITS
1.4
V
2.0
-1
+1
µA
100
ns
100
28
V
15
30
µA
100
180
90
150
µA
15
30
Ω
30
60
Ω
ELECTRICAL CHARACTERISTICS
(VIN = 2.5V, VSUP = 10V, VSRC = 28V, FREQ = CTL = IN, PGND = AGND = 0, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
IN Supply Range
IN Quiescent Current
IN Undervoltage Lockout
Threshold
LDO Output Voltage
LDO Undervoltage Lockout
Threshold
LDO Output Current
SUP Supply Voltage Range
SUP Undervoltage Fault
Threshold
SUP Supply Current
STEP-UP REGULATOR
Operating Frequency
Maximum Duty Cycle
FREQ Input Low Voltage
CONDITIONS
VIN = 2.5V, VFB = 1.5V
IN rising, 200mV hysteresis
6V ≤ VSUP ≤ 13V, ILDO = 12.5mA
LDO rising, 200mV hysteresis
VPOS_ = 4V, no load
FREQ = AGND
FREQ = IN
FREQ = AGND
FREQ = IN
VIN = 1.8V to 5.5V
LX not switching
LX switching
MIN TYP MAX UNITS
1.8
5.5
V
30
µA
1.75
V
4.6
5.4
V
2.4
3.0
V
15
mA
4.5
13.0
V
1.4
V
3.0
mA
30
512
1020
91
88
768
kHz
1380
99
%
96
0.6
V
4 _______________________________________________________________________________________
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