參數(shù)資料
型號： MAX1883EUP
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Replaced by TMS320C6211B : Fixed-Point Digital Signal Processor 256-BGA 0 to 0
中文描述： 2.05 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 4.40 MM, 1.10 MM HEIGHT, MO-153AC, TSSOP-20
文件頁數(shù)： 32/38頁
文件大?。?/td> 1051K
代理商： MAX1883EUP
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
MAX1884EUP Fixed-Point Digital Signal Processor 256-BGA
MAX1885EUP Fixed-Point Digital Signal Processor 256-BGA
MAX1778EUG Quad-Output TFT LCD DC-DC Converters with Buffer
MAX1880EUG Quad-Output TFT LCD DC-DC Converters with Buffer
MAX1881EUG 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
MAX1883EUP-T 功能描述:LCD 驅(qū)動(dòng)器 Quad-Output TFT LCD DC-DC Converter with Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
MAX1884EUP 功能描述:LCD 驅(qū)動(dòng)器 Quad-Output TFT LCD DC-DC Converter with Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
MAX1884EUP-T 功能描述:LCD 驅(qū)動(dòng)器 Quad-Output TFT LCD DC-DC Converter with Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
MAX1885EUP 功能描述:LCD 驅(qū)動(dòng)器 Quad-Output TFT LCD DC-DC Converter with Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
MAX1885EUP-T 功能描述:LCD 驅(qū)動(dòng)器 Quad-Output TFT LCD DC-DC Converter with Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
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