MAX8795AGCJT 查看數據表（PDF） - Maxim Integrated
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MAX8795AGCJT Datasheet PDF : 31 Pages
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TFT-LCD DC-DC Converter with
Operational Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3V, VMAIN = VSUP = 14V, VPGND = VAGND = VBGND = 0V, 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
VFBN IDRVN = 100µA, VREF - VFBN
FBN Effective Load-Regulation
Error (Transconductance)
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
DRVN Source Current
IDRVN VFBN = 300mV, VDRVN = -10V
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
DEL Capacitor Charge Current
DEL Turn-On Threshold
During startup, VDEL = 1V
VTH(DEL)
CTL Input Low Voltage
CTL Input High Voltage
VIN = 2.5V to 5.5V
VIN = 2.5V to 5.5V
SRC Input Voltage Range
SRC Input Current
ISRC
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
SRC-to-COM Switch On-Resistance RSRC(ON) VDEL = 1.5V, CTL = IN
DRN-to-COM Switch On-Resistance RDRN(ON) VDEL = 1.5V, CTL = AGND
±5
mV
1
mA
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, VPGND = VAGND = VBGND = 0V, 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 = 0V,
LX not switching
IIN
VFB = 1.2V, VFBP = 1.4V, VFBN = 0V,
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
VFB or FBP below threshold or FBN above
200
ms
threshold
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
Thermal Shutdown
Temperature rising
Hysteresis
+160
°C
15
6 _______________________________________________________________________________________
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