參數(shù)資料
型號(hào): MAX8722EEG
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Low-Cost CCFL Backlight Controller
中文描述: FLUORESCENT LIGHT CONTROLLER, PDSO24
封裝: 0.150 INCH, 0.250 INCH PITCH, MO-137AE, QSOP-24
文件頁(yè)數(shù): 10/20頁(yè)
文件大?。?/td> 331K
代理商: MAX8722EEG
M
Low-Cost CCFL Bac klight Controller
10
______________________________________________________________________________________
PIN
18
19
20
21
NAME
GH1
GL1
GL2
PGND
FUNCTION
High-Side MOSFET NH1 Gate-Driver Output
Low-Side MOSFET NL1 Gate-Driver Output
Low-Side MOSFET NL2 Gate-Driver Output
Power Ground. PGND is the return for the GL1 and GL2 gate drivers.
Low-Side Gate-Driver Supply Input. Connect V
DD
to the output of the internal linear regulator (V
CC
). Bypass
V
DD
with a 0.1μF capacitor to PGND.
22
V
DD
23
V
CC
5.3V/10mA Internal Linear-Regulator Output. V
CC
is the supply voltage for the device. Bypass V
CC
with a
1μF ceramic capacitor to GND.
24
GND
Analog Ground. The ground return for V
CC
, REF, and other analog circuitry. Connect GND to PGND under
the IC at the IC’s backside exposed metal pad.
Pin Desc ription (c ontinued)
MAX8722
GND
GH2
LX2
BST2
BST1
LX1
GH1
GL1
V
DD
BATT
IFB
VFB
GL2
ISEC
CNTL
ILIM
FREQ
SYNC
PGND
COMP
V
IN
V
CC
DPWM
TFLT
V
CC
V
CC
D1
SHDN
GND
ON/OFF
BRIGHTNESS
SYNC
DPWM
C8
0.1
μ
F
C9
0.47
μ
F
R4
100k
R5
200k
R6
169k
1%
C10
0.01
μ
F
C11
0.22
μ
F
C1
4.7
μ
F
25V
C7
0.47
μ
F
C6
0.1
μ
F
C5
0.1
μ
F
NH1
NH2
NL1
NL2
C2
1
μ
F
T1
CCFL
C3
18pF
3kV
C4
15nF
R3
40.2
1%
R1
150
1%
F1
2A
Figure 1. Typical Operating Circuit of the MAX8722
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