MAX8795A Maxim Integrated Products, MAX8795A Datasheet - Page 5

• Manufacturer Part Number: MAX8795A
• Description: TFT-LCD DC-DC Converter
• Manufacturer: Maxim Integrated Products

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ELECTRICAL CHARACTERISTICS
(V
IN Supply Range
IN Undervoltage-Lockout
Threshold
IN Quiescent Current
REF Output Voltage
REF Undervoltage Lockout
Threshold
MAIN STEP-UP REGULATOR
Output Voltage Range
Operating Frequency
FB Regulation Voltage
FB Line Regulation
FB Transconductance
LX On-Resistance
LX Current Limit
OPERATIONAL AMPLIFIERS
SUP Supply Range
SUP Overvoltage Fault Threshold
SUP Supply Current
Input Offset Voltage
Input Common-Mode Voltage
Range
Output Voltage Swing, High
Output Voltage Swing Low
Short-Circuit Current
GATE-ON LINEAR-REGULATOR CONTROLLER
FBP Regulation Voltage
FBP Effective Load-Regulation
Error (Transconductance)
FBP Line (IN) Regulation Error
DRVP Sink Current
IN
= 3V, V
PARAMETER
MAIN
= V
SUP
_______________________________________________________________________________________
= 14V, PGND = AGND = BGND = 0, I
SYMBOL
R
V
V
I
LX(ON)
V
f
V
I
V
V
I
V
V
DRVP
UVLO
V
V
MAIN
OSC
SUP
LIM
I
SUP
FBP
CM
OH
IN
OS
OL
FB
IN
TFT-LCD DC-DC Converter with
(Note 2)
V
V
LX not switching
V
LX switching
No external load
Rising edge; typical hysteresis = 160mV
No load
V
∆I
I
V
Buffer configuration, V
no load
(V
I
I
To V
I
V
I
V
LX
OUT
OUT
DRVP
DRVP
IN
FB
FB
IN
FB
DRVP
FBP
COMP
NEG
= 200mA
rising, typical hysteresis = 150mV
= 2.5V to 6V
= V
= 1.2V, V
= 1.2V, duty cycle = 75%
SUP
_ = 5mA
_ = -5mA
= 1.1V, V
_, V
= 100µA
= 100µA, 2.5V < V
= 10V, I
FBP
= ±2.5µA
/ 2
POS
= 1.3V, V
REF
FBP
_, V
DRVP
DRVP
CONDITIONS
= 25µA, T
OUT
= 1.4V, V
= 50µA to 1mA
= 10V
Operational Amplifiers
FBN
_) ≅ V
POS
Source
Sink
IN
= 0,
_ = V
FBN
SUP
< 6V
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
SUP
= 0,
/ 2
/ 2,
V
1.218
1.198
1.210
18.0
MIN
2.05
900
SUP
100
V
2.5
2.5
75
75
75
6
0
1
IN
-
1.277
1.260
1.280
V
MAX
1400
2.45
1.15
±0.4
19.9
280
260
100
-1.5
6.0
1.0
3.5
18
18
12
SUP
10
3
5
UNITS
%/ V
kHz
mΩ
mA
mA
mV
mV
mA
mV
mA
µS
%
V
V
V
V
V
V
A
V
V
V
V
5