MAX8740 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8740 Datasheet PDF : 12 Pages
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TFT-LCD Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VSHDN = 3V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
CONTROL INPUTS
SHDN, FREQ Input Low Voltage VIN = 2.6V to 5.5V
SHDN, FREQ Input High Voltage VIN = 2.6V to 5.5V
SHDN, FREQ Input Hysteresis
VIN = 2.6V to 5.5V
0.7 x
VIN
FREQ Pulldown Current
2.3
SHDN Input Current
SHDN = GND
TYP
0.1 x
VIN
6.0
0.001
MAX
0.3 x
VIN
9.5
1
UNITS
V
V
V
µA
µA
ELECTRICAL CHARACTERISTICS
(VIN = VSHDN = 3V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
Input Voltage Range
Output Voltage Range
IN Quiescent Current
IN Shutdown Current
ERROR AMPLIFIER
FB Regulation Voltage
FB Line Regulation
Transconductance
OSCILLATOR
Frequency
n-CHANNEL MOSFET
Current Limit
Current-Sense Transresistance
CONTROL INPUTS
VOUT < 18V
18V < VOUT < 28V
CONDITIONS
VFB = 1.3V, not switching
VFB = 1.0V, switching, FREQ = GND
SHDN = GND
Level to produce VCOMP = 1.24V
Level to produce VCOMP = 1.24V, VIN = 2.6V to 5.5V
FREQ = GND
FREQ = IN
VFB = 1V, 71% duty cycle
SHDN, FREQ Input Low Voltage VIN = 2.6V to 5.5V
SHDN, FREQ Input High Voltage VIN = 2.6V to 5.5V
Note 1: -40°C specifications are guaranteed by design, not production tested.
MIN TYP MAX UNITS
2.6
5.5
V
4.0
5.5
28
V
0.44
mA
5
10
µA
1.215
100
490
900
3.9
0.09
1.260
V
0.15 %/V
330
µS
770
kHz
1600
5.3
A
0.25
V/A
0.7 x
VIN
0.3 x
VIN
V
V
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