Datasheet

MAX17103/AUO-P1721.14
DC-DC Converter with Integrated Scan Driver,
VGL Controller, Op Amp, and LDO for TFT LCD
_______________________________________________________________________________________ 9
STEP-UP REGULATOR PULSED LOAD-
TRANSIENT RESPONSE (20mA TO 1A)
MAX17103 toc09
10μs/div
V
LX
10V/div
I
L1
500mA/div
0V
0A
0mV
V
MAIN
(AC-COUPLED)
500mV/div
I
MAIN
1A/div
L1 = 10μHR
COMP
= 56.2kΩ
C
COMP
= 1000pF
0A
LDO OUTPUT LOAD REGULATION
vs. LOAD CURRENT
MAX17103 toc10
LOAD CURRENT (mA)
OUTPUT ERROR (%)
10010
-0.2
0
0.2
-0.4
1 1000
V
IN
= 3.0V
V
IN
= 5.0V
LDO LINE REGULATION
vs. INPUT VOLTAGE
MAX17103 toc11
INPUT VOLTAGE (V)
OUTPUT ERROR (%)
4.63.6
-0.14
-0.16
-0.18
-0.06
-0.08
-0.10
-0.12
0
-0.02
-0.04
-0.20
2.6 5.6
I
LDO
= 100mA
I
LDO
= 250mA
POWER-UP SEQUENCE
MAX17103 toc12
20ms/div
V
IN
5V/div
V
LDOO
5V/div
V
REF
5V/div
0V
0V
0V
0V
0V
0V
V
MAIN
10V/div
V
GHON
20V/div
V
VGL
20V/div
OPAS SUPPLY CURRENT
vs. OPAS SUPPLY VOLTAGE
MAX17103 toc13
OUTPUT VOLTAGE (V)
INPUT CURRENT (mA)
96
1.5
1.0
0.5
3.0
2.5
2.0
4.0
3.5
0
31215
V
IN
= 5.0V
V
IN
= 3.3V
V
OUT
= V
OPAS
/2
NO LOAD ON V
MAIN
OPAS SUPPLY CURRENT
vs. TEMPERATURE
MAX17103 toc14
TEMPERATURE (°C)
INPUT CURRENT (mA)
10-15
1.5
1.0
0.5
3.0
2.5
2.0
4.0
3.5
0
-40 35 60 85
V
MAIN
= 15V
V
MAIN
= 8.5V
V
IN
= 3.3V
I
MAIN
= NO LOAD
OPERATIONAL AMPLIFIER
FREQUENCY RESPONSE
MAX17103 toc15
FREQUENCY (kHz)
GAIN (dB)
10,0001000
-10
-15
-20
0
-5
10
5
-25
100 100,000
NO LOAD
100pF
33pF
A
V
= 1
V
IN
= 3.3V
OPERATIONAL AMPLIFIER RAIL-TO-RAIL
INPUT/OUTPUT WAVEFORMS
MAX17103 toc16
10
μ
s/div
V
POS
5V/div
0V
0V
V
VCOM
5V/div
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)