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LX1882_05 Datasheet, PDF (1/13 Pages) Microsemi Corporation – Charge Pump Doubler with Linear Regulator | |||
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INTEGRATED PRODUCTS
LX1882
Charge Pump Doubler with Linear Regulator
PRODUCTION DATA SHEET
DESCRIPTION
The LX1882 is a two-stage boost operating current of less than 150µA.
regulator featuring a charge pump Quiescent current is reduced to < 5µA in
doubler with an integrated low dropout shutdown mode.
linear regulator.
The LX1882âs internal regulator is stable
The first stage features an internal with either Tantalum or Ceramic low-value
doubler charge pump converting an input capacitors, typically 2.2µF on the output,
supply of 1.8V to 4.4V, while the second allowing designers flexibility in external
stage is an LDO regulating the boosted component selection.
voltage converting it to a regulated Reliability and safety features include
output.
Thermal Shutdown Protection and
The LX1882 is capable of supplying up Integrated Short-Circuit Protection.
to 50mA of output current with an
IMPORTANT: For the most current data, consult MICROSEMIâs website: http://www.microsemi.com
KEY FEATURES
 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 1µA
 Internal Thermal Shutdown and
Current Limiting
 550kHz Switching Operation
APPLICATIONS/BENEFITS
 Cellular Telephone VCO Supplies
 Medical Instrumentation
 Data Acquisition
 Wireless PCMCIA Applications
 EMI Sensitive Boost Applications
PRODUCT HIGHLIGHT
C3
VIN
1.8V to 4.4V
C1
C4
8 CPO
SHDN 2
7 C+
VOUT 1
LX1882-00
6 VIN
FB 3
OFF ON
VOUT
C2
5 C-
GND 4
C3
LEDN+1
VIN
2V to 4.4V
C1
C4
8 CPO
VOUT 1
LX1882-33
7 C+
SHDN 2
6 VIN
FILT 3
5 C-
GND 4
VOUT = 3.3V
C2
OFF ON
CFILT
LX1882: Adjustable Output; LED Driver
LX1882: Fixed 3.3V Output
TJ (°C)
INPUT
PACKAGE ORDER INFO
OUTPUT
Plastic SOIC
DM 8-PIN
RoHS Compliant / Pb-free
Transition DC: 0440
Plastic MSOP
DU 8-PIN
RoHS Compliant / Pb-free
Transition DC: 0432
0 to 70
1.8V â 4.4V
2V â 4.4V
Adj
3.3V
LX1882-00CDM
LX1882-33CDM
LX1882-00CDU
LX1882-33CDU
Note: Available in Tape & Reel. Append the letters âTRâ to the part number. (i.e. LX1882-00CDU-TR)
Copyright © 2000
Rev. 1.0e, 2005-03-03
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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