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MAX16929
Automotive TFT-LCD Power Supply with Boost
Converter and Gate Voltage Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V INB = 12V, V INA = 5V, V GND = V PGNDP = 0V, T A = T J = -40 N C to +105 N C, typical values are at T A = +25 N C, unless otherwise noted.)
(Note 2)
PARAMETER
Spread-Spectrum Factor
SYMBOL
SSR
CONDITIONS
As a percentage of switching frequency,
f SW
MIN
T Y P
Q 4
MAX
UNITS
%
BOOST CONVERTER
Switching Frequency
Maximum Duty Cycle
f SW
1.98
82
2 .2 0
2.42
93.5
MHz
%
LXP Current Limit
I LIM
Low boost current-
Duty cycle = 70%, limit option
C COMPI = 220pF High boost current-
limit option
0.625
1.25
0.78
1.56
1.87
A
LXP On-Resistance
R DS_ON(LXP) I LXP = 200mA
110
250
m I
LXP Leakage Current
Soft-Start Time
Output Voltage Range
I LK_LXP
V SH
V LXP = 20V, T A =+25 N C
(Note 4)
V INA
8.5
30
20
18
F A
ms
V
FBP Regulation Voltage
PGOOD Threshold
V FBP
V PG_FBP
V INA = +3V to +5.5V, T A = +25 N C
0 < I LOAD < full load T A = -40 N C to +105 N C
Measured at FB P
0.985
0.98
0.74
1.0
1.0
0 .8 5
1.015
1.02
0.96
V
V
FBP Load Regulation
FBP Line Regulation
FBP Input Bias Current
FBP to COMPV Transconductance
0 < I LOAD < full load
V INA = +3V to +5.5V
V FBP = +1V, T A = +25 N C
D I = Q 2.5 F A at COMPV, T A = +25 N C
-1
0.1
400
Q 1
%
%/V
F A
F S
POSITIVE-GATE VOLTAGE REGULATOR (GH)
Output Voltage Range
CP Overvoltage Threshold
V GH
With external charge pump, T A = +25 N C
(maximum V CP = 29.5V)
T A = +25 N C (Note 6)
5
29.5
3 0. 5
29
V
V
FBGH Regulation Voltage
PGOOD Threshold
V FBGH
V PG_FBGH
I GH = 1mA
Measured at FBGH
0.98
0.83
1.0
0 .8 5
1.034
0.87
V
V
FBGH Load Regulation
FBGH Line Regulation
FBGH Input Bias Current
I GH = 0 to 20mA
V CP = 12V to 20V at V GH = 10V,
I GH = 10mA
V FBGH = 1V, T A = +25 N C
2
2
Q 1
%
%
F A
GH Output Current
I GH
V CP - V GH = 2V
20
mA
GH Current Limit
GH Soft-Start Time
I LIM_GH
35
56
7 .4 5
mA
ms
NEGATIVE-GATE VOLTAGE REGULATOR (GL)
Output Voltage Range
V DRVN
-24
-2
V
FBGL Regulation Voltage
V FBGL
I DRVN = 100 F A
0.212
0.242
0.271
V
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功能描述:LCD 驱动器 18V 2MHz Auto TFT-LCD Pwr Supply RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube
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功能描述:LCD 驱动器 18V 2MHz Auto TFT-LCD Pwr Supply RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube
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