MAX8795A 데이터 시트보기 (PDF) - Maxim Integrated
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MAX8795A 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 = 0°C to +105°C. Typical values are at TA = +25°C,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
GATE-ON LINEAR-REGULATOR CONTROLLER
FBP Regulation Voltage
FBP Fault Trip Level
FBP Input Bias Current
VFBP
IFBP
IDRVP = 100µA
VFBP falling
VFBP = 1.25V
1.231 1.250 1.269
V
0.96 1.00 1.04
V
-50
+50
nA
FBP Effective Load-Regulation
Error (Transconductance)
VDRVP = 10V, IDRVP = 50µA to 1mA
-0.7 -1.5
%
FBP Line (IN) Regulation Error
DRVP Sink Current
DRVP Off-Leakage Current
Soft-Start Period
IDRVP
tSS
IDRVP = 100µA, 2.5V < VIN < 6V
VFBP = 1.1V, VDRVP = 10V
VFBP = 1.4V, VDRVP = 34V
Soft-Start Step Size
GATE-OFF LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage
FBN Fault Trip Level
FBN Input Bias Current
VFBN
IFBN
IDRVN = 100µA, VREF - VFBN
VFBN rising
VFBN = 0.25V
FBN Effective Load-Regulation
Error (Transconductance)
VDRVN = -10V, IDRVN = 50µA to 1mA
FBN Line (IN) Regulation Error
DRVN Source Current
DRVN Off-Leakage Current
Soft-Start Period
IDRVN
tSS
IDRVN = 0.1mA, 2.5V < VIN < 6V
VFBN = 300mV, VDRVN = -10V
VFBN = 0V, VDRVN = -25V
±1
±10
mV
1
5
mA
0.01
10
µA
14
ms
VREF /
V
128
0.984
1
1.015
V
340
420
510
mV
-50
+50
nA
11
25
mV
±0.7
±5
mV
1
5
mA
-0.01 -10
µA
14
ms
Soft-Start Step Size
(VREF -
VFBN) /
V
128
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
DEL Capacitor Charge Current
DEL Turn-On Threshold
During startup, VDEL = 1V
VTH(DEL)
DEL Discharge Switch
On-Resistance
During UVLO, VIN = 2.0V
CTL Input Low Voltage
CTL Input High Voltage
CTL Input Leakage Current
VIN = 2.5V to 5.5V
VIN = 2.5V to 5.5V
CTL = AGND or IN
CTL-to-SRC Propagation Delay
SRC Input Voltage Range
SRC Input Current
SRC-to-COM Switch On-Resistance
DRN-to-COM Switch On-Resistance
ISRC
RSRC(ON)
RDRN(ON)
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
4
5
6
µA
1.19 1.25 1.31
V
20
Ω
0.6
V
2
V
-1
+1
µA
100
ns
36
V
200
300
µA
115
200
5
12
Ω
30
70
Ω
8 _______________________________________________________________________________________
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