MAX8795A(2007) データシートの表示（PDF） - Maxim Integrated
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MAX8795A Datasheet PDF : 30 Pages
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TFT-LCD DC-DC Converter with
Operational Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3V, VMAIN = VSUP = 14V, PGND = AGND = BGND = 0, IREF = 25µA, TA = -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX UNITS
GATE-OFF LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage
FBN Effective Load-Regulation
Error (Transconductance)
VFBN
IDRVN = 100µA, VREF - VFBN
VDRVN = -10V, IDRVN = 50µA to 1mA
0.972
1.022
V
25
mV
FBN Line (IN) Regulation Error
IDRVN = 0.1mA, 2.5V < VIN < 6V
±5
mV
DRVN Source Current
IDRVN VFBN = 300mV, VDRVN = -10V
1
mA
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
SRC Input Current
SRC-to-COM Switch On-Resistance
DRN-to-COM Switch On-Resistance
VTH(DEL)
ISRC
RSRC(ON)
RDRN(ON)
During startup, VDEL = 1V
VIN = 2.5V to 5.5V
VIN = 2.5V to 5.5V
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
4
6
µA
1.19
1.31
V
0.6
V
2
V
36
V
300
µA
200
10
Ω
60
Ω
ELECTRICAL CHARACTERISTICS
(VIN = 3V, VMAIN = VSUP = 14V, PGND = AGND = BGND = 0, IREF = 25µA, TA = 0°C to +105°C. Typical values are at TA = +25°C,
unless otherwise noted.)
PARAMETER
IN Supply Range
IN Undervoltage-Lockout
Threshold
SYMBOL
VIN
(Note 2)
CONDITIONS
VUVLO VIN rising, typical hysteresis = 50mV
MIN TYP MAX UNITS
2.5
6.0
V
2.05 2.25 2.45
V
IN Quiescent Current
VFB = VFBP = 1.3V, VFBN = 0,
LX not switching
IIN
VFB = 1.2V, VFBP = 1.4V, VFBN = 0,
LX switching
0.6
1.0
mA
2
3
Duration to Trigger Fault
Condition
REF Output Voltage
REF Load Regulation
REF Sink Current
REF Undervoltage Lockout
Threshold
Thermal Shutdown
FB or FBP below threshold or FBN above
threshold
200
ms
No external load
TA = +25°C to +105°C 1.238 1.250 1.262
V
TA = 0°C to +105°C
1.232 1.250 1.266
0 < ILOAD < 50µA
10
mV
In regulation
10
µA
Rising edge; typical hysteresis = 160mV
1.15
V
Temperature rising
Hysteresis
+160
°C
15
6 _______________________________________________________________________________________
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