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參數資料
| 型號： | MAX8729 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Constant-Frequency, Half-Bridge CCFL Inverter Controller |
| 中文描述： | 固定頻率、半橋CCFL逆變控制器 |
| 文件頁數： | 25/26頁 |
| 文件大小： | 395K |
| 代理商： | MAX8729 |
M
Constant-Frequency, Half-Bridge CCFL
Inverter Controller
______________________________________________________________________________________
25
3) Route high-speed switching nodes away from sen-
sitive analog areas (V
CC
, COMP, HF, LF, and
TFLT). Make all pin-strap control input connections
to analog ground or V
CC
rather than power ground
or V
DD
.
4) Mount the decoupling capacitor from V
CC
to GND
as close as possible to the IC with dedicated traces
that are not shared with other signal paths.
5) The current-sense paths for LX to GND and IN to LX
must be made using Kelvin-sense connections to
guarantee the current-limit accuracy. With 8-pin SO
MOSFETs, this is best done by routing power to the
MOSFETs from the outside using the top copper
layer, while connecting GND and LX inside (under-
neath) the 8-pin SO package.
6) Ensure the feedback connections are short and
direct. To the extent possible, IFB, VFB, and ISEC
connections should be far away from the high-volt-
age traces and the transformer.
7) To the extent possible, high-voltage trace clearance
on the transformer’s secondary should be widely
separated. The high-voltage traces should also be
separated from adjacent ground planes to prevent
lossy capacitive coupling.
8) The traces to the capacitive voltage-divider on the
transformer’s secondary need to be widely separated
to prevent arcing. Moving these traces to opposite
sides of the board can be beneficial in some cases.
Chip Information
TRANSISTOR COUNT: 7531
PROCESS: BiCMOS
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
DD
GL
PGND
BST
GH
LX
HF
PS1
LSYNC
ISEC
VFB
IFB
COMP
PS2
HSYNC
HFCK
PSCK
DPWM
LFCK
LF
SHDN
CNTL
TFLT
GND
V
CC
IN
SEL
PCOMP
QSOP
TOP VIEW
MAX8729
Pin Configuration
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX8729EEI | 功能描述:顯示驅動器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX8729EEI+ | 功能描述:顯示驅動器和控制器 Const-f Half-Bridge CCFL Inverter Ctlr RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX8729EEI+T | 功能描述:顯示驅動器和控制器 Const-f Half-Bridge CCFL Inverter Ctlr RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX8729EEI-T | 功能描述:顯示驅動器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX8729EVKIT | 功能描述:電源管理IC開發(fā)工具 MAX8729 Eval Kit RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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