參數(shù)資料
型號(hào)： MAX1739EEP
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Wide Brightness Range CCFL Backlight Controllers
中文描述： FLUORESCENT LIGHT CONTROLLER, 64 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-20
文件頁(yè)數(shù)： 9/26頁(yè)
文件大?。?/td> 444K
代理商： MAX1739EEP
M
Wide Brightness Range
CCFL Backlight Controllers
_______________________________________________________________________________________
9
NAME
PIN
MAX1739
REF
MAX1839
REF
FUNCTION
1
2V Reference Output. Bypass to GND with 0.1
μ
F. Forced low during shutdown.
2
MINDAC
MINDAC
DAC Zero-Scale Input. VMINDAC sets the DAC
’
s minimum scale output voltage.
Disable DPWM by connecting MINDAC to VL.
3
CCI
CCI
GMI Output. Output of the current loop GMI amplifier that regulates the CCFL current.
Typically bypass to GND with 0.1
μ
F
4
CCV
CCV
GMV Output. Output of the voltage loop GMV amplifier that regulates the maximum
average primary transformer voltage. Typically bypass to GND with 3300p F
5
SH
/SUS
SH
Logic Low Shutdown Input in Analog Interface Mode. SMBus suspends input in SMBus
interface mode (MAX1739 only).
6
CRF/SDA
CRF
5- Bi AD C Reference Input in Anal og Inter ace Mod e. Bypass to GN D wi h 0.1
μ
F. SM Bus seri al
d ata i np ut/op en- d ai n outp ut ( MAX 1739 onl y) i n S M Bus i nter ace m od e.
7
CTL/SCL
CTL
CCFL Brightness Control Input in Analog Interface Mode. SMBus serial clock input
(MAX1739 only) in SMBus interface mode.
8
MODE
MODE
Interface Selection Input and Sync Input for DPWM Chopping (see
Synchronizing the
DPWM Frequency
). The average voltage on the MODE pin selects one of three CCFL
brightness control interfaces:
1) MODE = VL, enables SMBus serial interface (MAX1739 only).
2) MODE = GND, enables the analog interface (positive scale analog interface mode);
VCTL/SCL = 0 means minimum brightness.
3) MODE = REF, enables the analog interface (negative scale analog interface mode);
VCTL/SCL = 0 means maximum brightness.
Current-Sense Input. Input to the GMI error amplifier that drives CCI.
Center-Tap Voltage Feedback Input. The average VCTFB is limited to 0.6V.
Royer Synchronization Input. Falling edges on SYNC force DH on and toggle the DL1
and DL2 drivers. Connect directly to the Royer center tap.
9
10
CSAV
CTFB
CSAV
CTFB
11
SYNC
SYNC
12
DL2
DL2
Low-Side N-Channel MOSFET 2 Gate Drive. Drives the Royer oscillator switch. DL1 and
DL2 have make-before-break switching, where at least one is always on. Falling edges
on SYNC toggle DL1 and DL2 and turn DH on.
13
DL1
DL1
Low-Side N-Channel MOSFET 1 Gate Drive
14
CS
CS
Current-Sense Input (Current Limit). The current-mode regulator terminates the switch
cycle when VCS exceeds (VREF - VCCI).
System Ground
15
GND
GND
16
VL
VL
5.3V Linear Regulator Output. Supply voltage for most of the internal circuits. Bypass
with 1
μ
F capacitor to GND. Can be connected to VBATT if VBATT < 5.5V.
17
BST
BST
High-Side Driver Bootstrap Input. Connect through a diode to VL and bypass with 0.1
μ
F
capacitor to LX.
18
19
20
LX
DH
BATT
LX
DH
BATT
High-Side Driver Ground Input
High-Side Gate Driver Output. Falling edges on SYNC turn on DH.
Supply Input. Input to the internal 5.3V linear regulator that powers the chip.
Pin Description
相關(guān)PDF資料
PDF描述
MAX1839 Wide Brightness Range CCFL Backlight Controllers
MAX1839EEP Wide Brightness Range CCFL Backlight Controllers
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1739EEP+ 功能描述:顯示驅(qū)動(dòng)器和控制器 CCFL Backlight Controller 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
MAX1739EEP+T 功能描述:顯示驅(qū)動(dòng)器和控制器 CCFL Backlight Controller 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
MAX1739EEP-T 功能描述:顯示驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
MAX1739EVKIT 功能描述:電源管理IC開發(fā)工具 MAX1739 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
MAX173BCNG 制造商:Maxim Integrated Products 功能描述:
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