MAX8795A Maxim Integrated Products, MAX8795A Datasheet - Page 3

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

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ELECTRICAL CHARACTERISTICS (continued)
(V
unless otherwise noted.)
FB Transconductance
FB Voltage Gain
LX On-Resistance
LX Leakage Current
LX Current Limit
Current-Sense Transresistance
Soft-Start Period
Soft-Start Step Size
OPERATIONAL AMPLIFIERS
SUP Supply Range
S U P O ver vol tag e Faul t Thr eshol d
SUP Supply Current
Input Offset Voltage
Input Bias Current
Input Common-Mode Voltage
Range
Common-Mode Rejection Ratio
Open-Loop Gain
Output Voltage Swing, High
Output Voltage Swing, Low
Short-Circuit Current
Power-Supply Rejection Ratio
Slew Rate
-3dB Bandwidth
GATE-ON LINEAR-REGULATOR CONTROLLER
FBP Regulation Voltage
FBP Fault Trip Level
FBP Input Bias Current
FBP Effective Load-Regulation
Error (Transconductance)
FBP Line (IN) Regulation Error
DRVP Sink Current
DRVP Off-Leakage Current
Soft-Start Period
Soft-Start Step Size
IN
= 3V, V
PARAMETER
MAIN
= V
_______________________________________________________________________________________
SUP
= 14V, PGND = AGND = BGND = 0, I
SYMBOL
R
CMRR
PSRR
I
LX(ON)
V
I
V
I
V
V
I
DRVP
I
V
V
BIAS
t
SUP
FBP
t
I
LIM
SUP
FBP
SS
SS
LX
CM
OH
OS
OL
TFT-LCD DC-DC Converter with
∆I
From FB to COMP
I
V
V
Buffer configuration, V
no load
(V
(V
0 ≤ (V
I
I
To V
DC, 6V ≤ V
(V
R
I
V
V
V
I
V
V
LX
OUT
OUT
DRVN
DRVP
LX
FB
FBP
FBP
DRVP
FBP
FBP
L
COMP
NEG
NEG
NEG
= 10kΩ, C
= 200mA
= 19V
= 1.2V, duty cycle = 75%
SUP
_ = 5mA
_ = -5mA
falling
= 1.25V
= 1.1V, V
= 1.4V, V
NEG
_, V
_ , V
_, V
= 100µA, 2.5V < V
= 100µA
= 10V, I
= ±2.5µA
/ 2, source or sink
POS
_, V
POS
POS
SUP
L
POS
_, V
_) ≅ V
_, V
DRVP
DRVP
DRVP
REF
CONDITIONS
= 10pF, buffer configuration
≤ 18V,
OUT
_) ≤ V
OUT
= 25µA, T
SUP
= 50µA to 1mA
= 10V
= 34V
Operational Amplifiers
_) ≅ V
_) ≅ V
POS
SUP
/ 2
IN
_ = V
SUP
< 6V
SUP
A
SUP
/ 2
= 0°C to +85°C. Typical values are at T
/ 2
/ 2,
V
1.231
18.0
0.96
MIN
SUP
100
2.5
0.1
6.0
-50
-50
75
45
75
60
0
1
-
V
V
V
1.250
TYP
1.00
0.01
160
700
160
128
125
SUP
130
-0.7
128
REF
REF
3.0
0.2
3.5
±1
10
14
19
80
50
50
45
20
14
0
0
5
/
-
/
1.269
V
MAX
18.0
19.9
1.04
260
+50
100
+50
-1.5
±10
280
3.5
0.3
5.0
20
12
SUP
10
A
= +25°C,
UNITS
MHz
V/µs
V/ V
mΩ
V/A
mA
mV
mV
mV
mA
mV
mA
ms
dB
dB
dB
ms
µS
µA
nA
nA
µA
%
A
V
V
V
V
V
V
V
3