- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383334 > MAX1880 (Maxim Integrated Products, Inc.) Quad-Output TFT LCD DC-DC Converters with Buffer PDF資料下載
參數(shù)資料
| 型號： | MAX1880 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Quad-Output TFT LCD DC-DC Converters with Buffer |
| 中文描述： | 四路輸出、TFT LCD DC-DC轉(zhuǎn)換器，帶有緩沖器 |
| 文件頁數(shù)： | 32/38頁 |
| 文件大?。?/td> | 1051K |
| 代理商： | MAX1880 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁當(dāng)前第32頁第33頁第34頁第35頁第36頁第37頁第38頁
M
Quad-Output TFT LCD DC-DC
Converters with Buffer
32
______________________________________________________________________________________
regulator and charge-pump power ground plane,
and the inner layer should contain the analog
ground plane and power-ground plane/path for the
V
COM
buffer and LDO. Connect all three ground
planes together at one place near the PGND pin.
3) Locate all feedback resistive-dividers as close to
their respective feedback pins as possible. The
voltage-divider
’
s center trace should be kept short.
Avoid running any feedback trace near the LX
switching node or the charge-pump drivers. The
resistive-dividers
’
ground connections should be to
analog ground (GND).
4) When using multilayer boards, separate the top sig-
nal layer and bottom signal layer with a ground
plane between to eliminate capacitive coupling
between fast-charging nodes on the top layer and
high-impedance nodes on the bottom layer. The
fast-charging nodes, such as the LX and charge-
pump driver nodes, should not have any other
traces or ground planes near by.
5) Keep the charge-pump circuitry as close to the IC
as possible, using wide traces and avoiding vias
when possible. Place 0.1μF ceramic bypass
capacitors near the charge-pump input pins (SUPP
and SUPN) to the PGND pin.
6) To maximize output power and efficiency and mini-
mize output ripple voltage, use extra wide, power
ground traces, and solder the IC
’
s power ground
pin directly to it.
Refer to the MAX1778/MAX1880-MAX1885 evaluation
kit for an example of proper board layout.
IN
SHDN
BUFFER OUTPUT
V
BUFOUT
= V
SUPB
/2
POSITIVE
V
POS
= 20V
RDY
SUPL
LDOOUT
SUPN
SUPP
DRVP
FBP
LX
FB
L1
10
μ
H
INPUT
V
IN
= 5V
C1
0.22
μ
F
C6
1
μ
F
C6
0.01
μ
F
C7
0.01
μ
F
C3
1.0
μ
F
C
REF
0.22
μ
F
C2
0.1
μ
F
C
BUF
1.0
μ
F
C5
1.0
μ
F
C
COMP
470pF
C
OUT
(2) 10
μ
F
C4
0.1
μ
F
C
IN
(2) 4.7
μ
F
C
LDOOUT
4.7
μ
F
R
RDY
100k
R8
1.5k
R8
10k
R5
316k
R9
30k
R3
750k
R4
49.9k
R1
86.6k
R2
10k
R
COMP
4.7k
R10
100k
R6
49.9k
R7
16.4k
NEGATIVE
V
NEG
= -8V
TO LOGIC
BUFOUT
BUF-
BUF+
GND
TGND
FLTSET
FBL
DRVN
FBN
REF
INTG
PGND
SUPB
MAX1778
LDO
V
LDO
= 3.3V
Q1
REF
MAIN
V
MAIN
= 12V
Figure 8. 5V Input Monitor Application
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1881 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1882 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1883 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1884 | Quad-Output TFT LCD DC-DC Converters with Buffer |
| MAX1885 | Quad-Output TFT LCD DC-DC Converters with Buffer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1880EUG | 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 |
| MAX1880EUG+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Quad-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 |
| MAX1880EUG+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Quad-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 |
| MAX1880EUG-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 |
| MAX1881EUG | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。