MAX8798AETX+T Maxim Integrated Products, MAX8798AETX+T Datasheet - Page 10

• Manufacturer Part Number: MAX8798AETX+T
• Description: Display Drivers Internal-Switch Boos t Regulator with Int
• Manufacturer: Maxim Integrated Products

Specifications of MAX8798AETX+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CONTROL
SHDN
Internal-Switch Boost Regulator with
Integrated 3-Channel Scan Driver for TFT LCDs
(Circuit of Figure 2, V
10
-10
-15
-20
-25
0V
0V
0V
0V
0V
0V
10
-5
5
0
100
______________________________________________________________________________________
100pF LOAD
C
OF ALL SUPPLY OUTPUTS
R
OPERATIONAL AMPLIFIER
COMP1
COMP
FREQUENCY RESPONSE
POWER-UP SEQUENCE
L = 3.6μH
= 100kΩ
1k
= 220pF
FREQUENCY (Hz)
NO LOAD
2ms/div
IN
TRANSIENT RESPONSE (20mA TO 1A)
STEP-UP REGULATOR PULSED LOAD
= 3V, T
10k
33pF LOAD
MAX17088 toc10
A
= +25°C, unless otherwise noted.)
10μs/div
100k
V
5V/div
V
5V/div
V
20V/div
V
5V/div
V
5V/div
V
20V/div
SHDN
5V/div
L
MAIN
GON
COM
IN
GOFF
MAX17088 toc08
-10
-15
-20
-25
-30
-35
-40
-45
Typical Operating Characteristics (continued)
3.0
2.5
2.0
1.5
1.0
0.5
-5
0
0
100
3
V
IN
OPERATIONAL AMPLIFIER PSRR
= 3.3V
V
10V/div
0V
I
1A/div
0A
0mV
V
AC-COUPLED
200mV/div
I
1A/div
0A
vs. BOOST SUPPLY VOLTAGE
L
MAIN
LX
MAIN
BOOST SUPPLY CURRENT
6
OUTPUT VOLTAGE (V)
vs. FREQUENCY
1k
FREQUENCY (Hz)
V
9
IN
= 5V
NO LOAD ON V
10k
12
RESPONSE TO OVERLOAD
TIMER-DELAY LATCH
MAIN
100k
15
10ms/div
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
OPERATIONAL AMPLIFIER RAIL-TO-RAIL
V
V
BOOST
MAX17088 toc09
BOOST
INPUT/OUTPUT WAVEFORMS
-15
BOOST SUPPLY CURRENT
= 15V
= 8V
vs. TEMPERATURE
TEMPERATURE (°C)
V
10V/div
0V
V
5V/div
0V
I
2A/div
0A
LOAD CURRENT
1A/div
0A
L
LX
MAIN
10
10μs/div
35
60
MAX17088 toc15
85
V
5V/div
0V
V
5V/div
0V
POS
VCOM