MAX16929 Datasheet, PDF (7/25 Pages) Maxim Integrated Products – Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators

MAX16929
Automotive TFT-LCD Power Supply with Boost
Converter and Gate Voltage Regulators
Typical Operating Characteristics (continued)
(V_INA = 5V, V_INB = 12V, measurements taken on “A” version, unless otherwise noted; V_SH = 12V, V_GH = 18V, V_GL = -6V, V_REG = 3.3V,
V_OUTB = 5V, T_A = +25NC, unless otherwise noted.)
LINE-TRANSIENT RESPONSE (BUCK)
MAX16929 toc07
28V
V_INB
10V/div
12V
SHORT-CIRCUIT BEHAVIOR (BUCK)
MAX16929 toc08
VOUTB
5V/div
ILXB
2A/div
VOUTB
(AC-COUPLED)
50mV/div
V_PGOOD
5V/div
1ms/div
100ms/div
LOAD DUMP RESPONSE
MAX16929 toc09
42V
VINB
20V/div
12V
I_LXB
2A/div
V_OUTB
5V/div
100ms/div
INA SHUTDOWN SUPPLY CURRENT
10
9
8
7
6
5
4
3
2
1
0
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
100
90
80
70
60
50
40
30
20
10
0
0
EFFICIENCY vs. LOAD CURRENT
(BOOST)
VINA = 3.3V
VINA = 5V
100 200 300 400 500
LOAD CURRENT (mA)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
LOAD REGULATION (BOOST)
VINA = 3.3V
VINA = 5V
100 200 300 400 500
LOAD CURRENT (mA)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
3.0
LINE REGULATION (BOOST)
I_LOAD = 0mA
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
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