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參數(shù)資料
| 型號(hào)： | MAX1779 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 32-Bit Digital Signal Controller with ROM 100-LQFP -40 to 125 |
| 中文描述： | 低功耗、三輸出TFT LCD DC-DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 6/18頁(yè) |
| 文件大?。?/td> | 503K |
| 代理商： | MAX1779 |
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4.0
μ
s/div
RIPPLE WAVEFORMS
MAX1779-14
A. V
MAIN
= 5V, I
MAIN
= 100mA, 10mV/div
B. V
NEG
= -8V, I
NEG
= 1mA, 5mV/div
C. V
POS
= 12V, I
POS
= 1mA, 5mV/div,
FIGURE 5
5V
12V
-8V
A
B
C
100
μ
s/div
LOAD TRANSIENT
(L = 10
μ
H, 500
μ
s PULSE)
MAX1779-15
A. V
MAIN
= 5V, 50mV/div
B. V
MAIN
= 5mA to 50mA, 25mA/div
FIGURE 6
5.0V
0
4.9V
A
B
5.1V
50mA
M
Low-Power Triple-Output TFT LCD DC-DC
Converter
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 5, V
IN
= +3.3V, T
A
= +25
°
C, unless otherwise noted.)
11.64
11.76
12.00
11.88
12.12
12.24
0
10
5
15
20
25
30
POSITIVE CHARGE-PUMP OUTPUT VOLTAGE
vs. LOAD CURRENT
M
I
POS
(mA)
V
P
V
SUPP
= +7V
V
SUPP
= +6V
V
SUPP
= +5V
30
50
40
70
60
90
80
100
0
10
15
5
20
25
30
POSITIVE CHARGE-PUMP EFFICIENCY
vs. LOAD CURRENT
M
I
POS
(mA)
V
P
V
SUPP
= +5V
V
SUPP
= +6V
V
SUPP
= +7V
V
POS
= +12V
200
220
240
260
280
300
2.5
3.5
3.0
4.0
4.5
5.0
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
M
INPUT VOLTAGE (V)
S
1.244
1.248
1.246
1.252
1.250
1.254
1.256
0
20
10
30
40
50
REFERENCE VOLTAGE
vs. REFERENCE LOAD CURRENT
M
I
REF
(
μ
A)
V
R
50
60
70
80
90
100
0
100
I
MAIN
(mA)
50
150
200
250
EFFICIENCY vs. LOAD CURRENT
(BOOST CONVERTER AND CHARGE PUMPS)
M
E
V
MAIN
= +5V
TWO-STAGE
CHARGE PUMPS
V
= +10V
SINGLE-STAGE
CHARGE PUMPS
V
NEG
= -8V, I
NEG
= 1mA
V
POS
= +12V, I
POS
= 1mA
-8.08
-8.04
-8.00
-7.96
-7.92
-7.88
-7.84
-7.80
-7.76
0
5
10
15
20
NEGATIVE CHARGE-PUMP OUTPUT VOLTAGE
vs. LOAD CURRENT
M
I
NEG
(mA)
V
N
V
SUPN
= +5V
V
SUPN
= +6V
V
SUPN
= +7V
30
50
40
70
60
90
80
100
NEGATIVE CHARGE-PUMP EFFICIENCY
vs. LOAD CURRENT
M
I
NEG
(mA)
E
0
5
10
15
20
V
SUPN
= +5V
V
NEG
= -8V
V
SUPN
= +6V
V
SUPN
= +7V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1779EUE | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| MAX1779EUE+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Triple-Output TFT LCD RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| MAX1779EUE+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Triple-Output TFT LCD RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| MAX1779EUE-T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| MAX177C/D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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