Datasheet

Step-Up, Step-Down Regulator, Gate-On Charge Pump,
and Boost-Buck Regulator for TV TFT LCD Display
MAX17122
12 _____________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
NEGATIVE LINEAR REGULATOR
LOAD-TRANSIENT
RESPONSE (0A TO 100mA)
MAX17122 toc18
V
GOFF1
(AC-COUPLED)
100mV/div
I
LOAD
50mA/div
0A
0V
20µs/div
POWER-UP SEQUENCE OF
ALL SUPPLY OUTPUTS
MAX17122 toc19
V
GOFF2
V
GOFF1
V
AVDD
V
GON
V
EN2
V
OUTB
V
EN1
V
IN
0V
0V
0V
0V
0V, 0V
0V
0V
10ms/div
V
IN
= 10V/div
V
EN1
= 5V/div
V
OUTB
= 5V/div
V
EN2
= 5V/div
V
GON
= 10V/div
V
AVDD
= 10V/div
V
GOFF1
= 5V/div
V
GOFF2
= 10V/div
RESET FUNCTION
MAX17122 toc20
V
RESET
2V/div
V
DEL
1V/div
V
OUTB
2V/div
0V
0V
0V
4ms/div
NEGATIVE LINEAR REGULATOR
NORMALIZED LOAD REGULATION
MAX17122 toc17
LOAD CURRENT (mA)
OUTPUT-VOLTAGE ERROR (%)
400300200100
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0 500