參數(shù)資料
型號(hào): MAX8722
廠商: Maxim Integrated Products, Inc.
英文描述: Low-Cost CCFL Backlight Controller
中文描述: 低成本CCFL背光控制器
文件頁(yè)數(shù): 6/20頁(yè)
文件大?。?/td> 331K
代理商: MAX8722
M
Low-Cost CCFL Bac klight Controller
6
_______________________________________________________________________________________
Typic al Operating Charac teristic s
(Circuit of Figure 1. V
BATT
= 12V, V
CC
= V
DD,
V
SHDN
= 5.3V, T
A
= +25
°
C, unless otherwise noted.)
LOW INPUT-VOLTAGE
OPERATION (V
BATT
= 8V)
MAX8722 toc01
10
μ
s/div
0VA
0VB
0V
C
0V
D
A: V
IFB
, 2V/div
B: V
VFB
, 2V/div
C: V
LX1
, 10V/div
D: V
LX2
, 10V/div
HIGH INPUT-VOLTAGE
OPERATION (V
BATT
= 20V)
MAX8722 toc02
10
μ
s/div
0VA
0VB
0V
C
0V
D
A: V
IFB
, 2V/div
B: V
VFB
, 2V/div
C: V
LX1
, 10V/div
D: V
LX2
, 10V/div
LINE-TRANSIENT RESPONSE
20
μ
s/div
0VA
0VB
0V
20V
C
0V
10V
D
A: V
VFB
, 2V/div
B: V
IFB
, 2V/div
C: V
LX1
, 10V/div
D: V
BATT
, 10V/div
LINE-TRANSIENT RESPONSE
20
μ
s/div
0VA
0VB
0V
20V
C
0V
10V
D
A: V
VFB
, 2V/div
B: V
IFB
, 2V/div
C: V
LX1
, 10V/div
D: V
BATT
, 10V/div
MINIMUM BRIGHTNESS STARTUP
WAVEFORM (V
CNTL
= 0V)
MAX8722 toc05
2ms/div
0VA
0VB
0V
C
0V
D
A: V
IFB
, 2V/div
B: V
VFB
, 2V/div
C: V
COMP
, 1V/div
D: V
SHDN
, 5V/div
MINIMUM BRIGHTNESS DIGITAL
PWM OPERATION (V
CNTL
= 0V)
2ms/div
0VA
0VB
0V
C
0V
D
A: V
IFB
, 2V/div
B: V
VFB
, 2V/div
C: V
COMP
, 1V/div
D: V
DPWM
, 5V/div
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