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參數(shù)資料
| 型號： | CMD4D06 |
| 廠商： | Linear Integrated Systems |
| 英文描述： | Dual Micropower DC/DC Converters with Schottky Diodes |
| 中文描述： | 雙微功率DC / DC轉(zhuǎn)換的肖特基二極管 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 193K |
| 代理商： | CMD4D06 |
1
LT3463/LT3463A
Dual Micropower
DC/DC Converters
with Schottky Diodes
3463f
, LTC and LT are registered trademarks of Linear Technology Corporation.
CCD Bias Supply (15V, –8V)
Efficiency and Power Loss
The LT
3463/LT3463A are dual micropower DC/DC con-
verters with internal Schottky diodes in a 10-lead 3mm
×
3mm
DFN package. Negative and positive LT3463 con-
verters have a 250mA current limit. The LT3463A positive
converter also has a 250mA limit, while the negative
converter has a 400mA limit. Both devices have an input
voltage range of 2.4V to 15V, making them ideal for a wide
variety of applications. Each converter features a quies-
cent current of only 20
μ
A, which drops to under 1
μ
A in
shutdown. A current limited, fixed off-time control scheme
conserves operating current, resulting in high efficiency
over a broad range of load current. The 42V switch enables
high voltage outputs up to
±
40V to be easily generated
without the use of costly transformers. The low 300ns off-
time permits the use of tiny, low profile inductors and
capacitors to minimize footprint and cost in space-con-
scious portable applications.
I
Generates Well-Regulated Positive and
Negative Outputs
I
Low Quiescent Current:
20
μ
A (per Converter) in Active Mode
<1
μ
A in Shutdown Mode
I
Internal 42V Power Switches
I
Internal 42V Schottky Diodes
I
Low V
CESAT
Switch: 180mV at 150mA
I
Input Voltage Range: 2.4V to 15V
I
High Output Voltages: Up to
±
40V
I
Low Profile (0.8mm) 3mm x 3mm DFN Package
I
CCD Bias
I
LCD Bias
I
Handheld Computers
I
Digital Cameras
DESCRIPTIOU
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
V
IN
V
REF
V
OUT1
V
15V
10mA
V
–8V
50mA
SW1
FB2
D2
LT3463A
10
μ
H
SHDN2
GND
2.2
μ
F
V
IN
2.7V
TO 5V
3463 TA01a
SW2
1
μ
F
4.7
μ
F
FB1
SHDN1
1M
1M
10pF
154k
90.9k
4.7
μ
F
10
μ
H
LOAD CURRENT (mA)
0.1
50
E
P
70
75
80
1
10
100
3463 TA01b
65
–8V LOSS
60
55
0
160
200
240
120
80
40
V
IN
= 3.6V
15V EFFICIENCY
–8V EFFICIENCY
15V LOSS
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