Datasheet

Multi-Output Power Supplies with VCOM Amplifier
and High-Voltage Gamma Reference for LCD TVs
MAX17126/MAX17126A
______________________________________________________________________________________ 11
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
STEP-DOWN REGULATOR EFFICIENCY
vs. LOAD CURRENT
MAX17126 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
1.00
55
60
65
70
75
80
85
50
0.10 10.00
750kHz
500kHz
STEP-DOWN REGULATOR OUTPUT
VOLTAGE vs. LOAD CURRENT
MAX17126 toc02
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
2.001.601.200.800.42
3.300
3.325
3.350
3.275
0 2.40
750kHz
500kHz
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT
MAX17126 toc05
LOAD CURRENT (A)
EFFICIENCY (%)
1.000.10
55
60
65
70
75
80
85
90
95
100
50
0.01 10.00
750kHz
500kHz
STEP-UP REGULATOR OUTPUT
VOLTAGE vs. LOAD CURRENT
MAX17126 toc06
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
2.01.51.00.5
16.415
16.420
16.425
16.430
16.435
16.440
16.445
16.410
0 2.5
750kHz
500kHz
STEP-DOWN REGULATOR LOAD
TRANSIENT RESPONSE (0.3A TO 1.8A)
MAX17126 toc03
V
OUT
(AC-COUPLED)
200mV/div
0V
0A
0A
I
L2
1A/div
I
LOAD
1A/div
20Fs/div
L = 4.7FH
STEP-DOWN REGULATOR HEAVY-LOAD
SOFT-START (1A)
MAX17126 toc04
V
IN
5V/div
V
OUT
1V/div
0V
0V
0A
0A
I
L2
1A/div
LX2
10V/div
4ms/div