參數(shù)資料
型號(hào)： LX1882EVALKIT
英文描述： Charge Pump
中文描述： 電荷泵
文件頁數(shù)： 1/13頁
文件大?。?/td> 309K
代理商： LX1882EVALKIT
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2000
Rev. 1.0c, 2002-08-01
W
M
.
C
LX1882
Charge Pump Doubler with Linear Regulator
P
RODUCTION
D
ATA
S
HEET
I N T E G R A T E D P R O D U C T S
D E S C R I P T I O N
The LX1882 is a two-stage boost
regulator featuring a charge pump
doubler with an integrated low dropout
linear regulator. This configuration
allows for a low noise boosted output for
powering noise sensitive applications.
The first stage features an internal
doubler charge pump converting an input
supply of 1.8V to 4.4V, while the second
stage is an LDO regulating the boosted
voltage converting it to a low noise
output.
The LX1882 is capable of supplying up
to 50mA of output current with an
operating current of less than 150
μ
A.
Quiescent current is reduced to < 5
μ
A in
shutdown mode.
The LX1882’s internal regulator is stable
with either Tantalum or Ceramic low-value
capacitors, typically 2.2
μ
F on the output,
allowing designers flexibility in external
component selection.
Reliability and safety features include
Thermal
Shutdown
Integrated Short-Circuit Protection.
Protection
and
IMPORTANT:
For the most current data, consult
MICROSEMI
’s website:
http://www.microsemi.com
K E Y F E A T U R E S
Wide Input Voltage: 1.8V to 4.4V
3.3V and Adjustable (2.5V to
5.5V) Output Voltage Options
Inductor-less design using small
ceramic capacitors
Low Shutdown Current of 1
μ
A
Internal Thermal Shutdown and
Current Limiting
550kHz Switching Operation
APPLICAT IONS /BENEFIT S
Cellular Telephone VCO Supplies
Medical Instrumentation
Data Acquisition
Wireless PCMCIA Applications
EMI Sensitive Boost Applications
P R O D U C T H I G H L I G H T
7
8
4
1
LED
N+1
2
3
6
V
1.8V to 4.4V
V
OUT
OFF ON
V
OUT
SHDN
FB
GND
C+
V
IN
C-
CPO
LX1882-00
5
C1
C2
C3
C4
LX1882: Adjustable Output; LED Driver
7
8
2
1
3
6
V
2V to 4.4V
V
OUT
= 3.3V
OFF ON
V
OUT
SHDN
FILT
GND
C+
V
IN
C-
CPO
LX1882-33
4
5
C2
C3
C1
C
FILT
LX1882: Fixed 3.3V Output
C4
PACK AGE ORDER INFO
T
J
(
°
C)
I
NPUT
O
UTPUT
DM
LX1882-00CDM
LX1882-33CDM
Plastic SOIC
8-PIN
DU
LX1882-00CDU
LX1882-33CDU
Plastic MSOP
8-PIN
1.8V – 4.4V
2V – 4.4V
Adj
3.3V
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX1882-00CDUT)
0 to 70
L
X
1
8
8
2
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