參數(shù)資料
型號: MAX1605
廠商: Maxim Integrated Products, Inc.
英文描述: 30V Internal Switch LCD Bias Supply
中文描述: 內(nèi)置30V開關(guān)的LCD偏置電源
文件頁數(shù): 9/12頁
文件大?。?/td> 347K
代理商: MAX1605
M
30V Internal Switch LCD Bias Supply
_______________________________________________________________________________________
9
saturation region. When shut down, the input voltage
exceeds the emitter voltage so the inactive transistor
provides high-impedance isolation between the input
and output. Efficiency will be slightly degraded due to
the PNP transistor saturation voltage and base current.
V
IN
=
0.8V TO
V
OUT
V
-19V
C2
1
μ
F
V
=
2.4V TO
5.5V
D3**
D2*
D1*
R1
240k
R2
16.5k
ON
OFF
SHDN
V
CC
LIM
GND
LX
FB
MAX1605
L1
10
μ
H
C3
0.1
μ
F
C6
0.1
μ
F
C4
0.01
μ
F
C1
1000pF
R3
1
C5
1
μ
F
*D1, D2 = CENTRAL SEMICONDUCTOR
CMPD7000 DUAL
**D3 = CENTRAL SEMICONDUCTOR
CMSD4448 (1N4148)
Figure 4. Negative Voltage for LCD Bias
V
IN
= 0.8V TO V
OUT
R3 = 180k
V
CC
= 2.4V TO 5.5V
V
OUT
= 18V
ON
OFF
R1
R2
SHDN
V
CC
2N2907A
V
SET
= 18.3V
(V
OUT
+ 0.3V)
LIM
GND
LX
FB
MAX1605
L1
10
μ
H
Figure 5. Output Disconnected in Shutdown
Chip Information
TRANSISTOR COUNT: 2329
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