MAX16929 Datasheet, PDF (8/25 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.)
STARTUP WAVEFORMS (BOOST)
V ^{MAX16929 toc14}
ENP
5V/div
LOAD-TRANSIENT RESPONSE (BOOST)
MAX16929 toc15
V_LXP
10V/div
I_LXP
1A/div
VSH
10V/div
450mA
50mA
ISH
500mA /div
VSH
100mV/div
4ms/div
SUPPLY SEQUENCING WAVEFORMS
(VSEQ = 0V)
MAX16929 toc16
VENP
5V/div
VGH
5V/div
VSH
5V/div
VREG
5V/div
V_GL
5V/div
100µs/div
SUPPLY SEQUENCING WAVEFORMS
(VSEQ = VINA)
MAX16929 toc17
VENP
5V/div
VGH
5V/div
VSH
5V/div
VREG
5V/div
V_GL
5V/div
10ms/div
LOAD REGULATION (GH REGULATOR)
0
-0.4
-0.8
-1.2
-1.6
-2.0
-2.4
-2.6
-3.2
-3.6
-4.0
0 2 4 6 8 10 12 14 16 18 20
LOAD CURRENT (mA)
10ms/div
LINE REGULATION (GH REGULATOR)
1.0
0.8
0.6
0.4
ILOAD = 10mA
0.2
0
-0.2
-0.4
ILOAD = 20mA
-0.6
-0.8
-1.0
18 19 20 21 22 23 24 25 26 27 28 29 30
VCP VOLTAGE (V)
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