Datasheet

MAX8795A
TFT-LCD DC-DC Converter with
Operational Amplifiers
10 ______________________________________________________________________________________
Note 2: For 5.5V < V
IN
< 6.0V, use MAX8795A for no longer than 1% of IC lifetime. For continuous operation, input voltage should
not exceed 5.5V.
Note 3: Specifications to -40°C and +105°C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3V, V
MAIN
= V
SUP
= 14V, V
PGND
= V
AGND
= V
BGND
= 0V, I
REF
= 25µA, T
A
= -40°C to +105°C, unless otherwise noted.) (Note3)
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
GATE-ON LINEAR-REGULATOR CONTROLLER
FBP Regulation Voltage V
FBP
I
DRVP
= 100µA 1.210 1.280 V
FBP Effective Load-Regulation
Error (Transconductance)
V
DRVP
= 10V, I
DRVP
= 50µA to 1mA -1.5 %
FBP Line (IN) Regulation Error I
DRVP
= 100µA, 2.5V < V
IN
< 6V 10 mV
DRVP Sink Current I
DRVP
V
FBP
= 1.1V, V
DRVP
= 10V 1 mA
GATE-OFF LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage V
FBN
I
DRVN
= 100µA, V
REF
- V
FBN
0.972 1.022 V
FBN Effective Load-Regulation
Error (Transconductance)
V
DRVN
= -10V, I
DRVN
= 50µA to 1mA 25 mV
FBN Line (IN) Regulation Error I
DRVN
= 0.1mA, 2.5V < V
IN
< 6V ±5 mV
DRVN Source Current I
DRVN
V
FBN
= 300mV, V
DRVN
= -10V 1 mA
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
DEL Capacitor Charge Current During startup, V
DEL
= 1V 4 6 µA
DEL Turn-On Threshold V
TH
(
DEL
)
1.19 1.31 V
CTL Input Low Voltage V
IN
= 2.5V to 5.5V 0.6 V
CTL Input High Voltage V
IN
= 2.5V to 5.5V 2 V
SRC Input Voltage Range 36 V
V
DEL
= 1.5V, CTL = IN 300
SRC Input Current I
SRC
V
DEL
= 1.5V, CTL = AGND 200
µA
SRC-to-COM Switch
On-Resistance
R
SRC
(
ON
)
V
DEL
= 1.5V, CTL = IN 12 Ω
DRN-to-COM Switch
On-Resistance
R
DRN
(
ON
)
V
DEL
= 1.5V, CTL = AGND 70 Ω