MAX1542 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1542 Datasheet PDF : 20 Pages
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TFT LCD DC-to-DC Converter with
Operational Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3V, VSUP = 8V, VSRC = 28V, FREQ = IN (MAX1543), PGND = AGND = 0, TA = -40°C to +85°C, unless otherwise noted.)
PARAMETER
LX Current Limit
Current-Sense Transresistance
OPERATIONAL AMPLIFIERS
SUP Supply Range
SUP Supply Current
Input Offset Voltage
Input Bias Current
Input Common-Mode Voltage
Range
SYMBOL
CONDITIONS
ILIM
VFB = 1V, duty cycle = 65%
VSUP
ISUP
VOS
IBIAS
VCM
Buffer configuration, VPOS_ = 4V, no load
VCM = VSUP/2, TA = +25ºC
NEG1, NEG2, POS1, POS2
MIN TYP MAX UNITS
1.2
1.8
A
0.30
0.65
Ω
4.5
13.0
V
2.1
mA
12
mV
±50
nA
0
VSUP
V
Output Voltage Swing High
Output Voltage Swing Low
Short-Circuit Current
VOH
VOL
IOUT_ = 100µA
IOUT_ = 5mA
IOUT_ = -100µA
IOUT_ = -5mA
To VSUP/2
Source
Sink
VSUP -
15
VSUP -
150
50
50
mV
15
mV
150
mA
Output Source-and-Sink Current
Buffer configuration, VPOS_ = 4V,
| ∆VOS | < 10mV
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
DEL Capacitor Charge Current
DEL Turn-On Threshold
CTL Input Low Voltage
CTL Input High Voltage
SRC Input Voltage Range
VTH (DEL)
During startup, VDEL = 1.0V
VIN = 2.6V to 5.5V
VIN = 2.6V to 5.5V
SRC Input Current
ISRC
VDRN = 8V, CTL = IN, MAX1542
VDEL = 1.5V
MAX1543
VDRN = 8V, CTL = AGND, VDEL = 1.5V
DRN Input Current
IDRN
VDRN = 8V, CTL = AGND, VDEL = 1.5V,
MAX1543
SRC to COM Switch On-
Resistance
MAX1542
RSRC(ON) VDEL = 1.5V, CTL = IN MAX1543
40
4
1.178
2
mA
6
µA
1.302
V
0.6
V
V
28
V
130
180
µA
30
150
µA
10
Ω
30
DRN to COM Switch On-
Resistance (MAX1543)
RDRN(ON) VDEL = 1.5V, CTL = AGND
60
Ω
COM to PGND Switch On-
Resistance (MAX1543)
RCOM(ON) VDEL = 1.1V
350
1800
Ω
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