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LP2966IMM-1830 Datasheet

  • LP2966IMM-1830

  • Positive Fixed Voltage Regulator

  • 15頁

  • ETC

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LP2966 Dual 150mA Ultra Low-Dropout Regulator
May 2001
LP2966
Dual 150mA Ultra Low-Dropout Regulator
General Description
The LP2966 dual ultra low-dropout (LDO) regulator operates
from a +2.70V to +7.0V input supply. Each output delivers
150mA over full temperature range. The IC operates with
extremely low drop-out voltage and quiescent current, which
makes it very suitable for battery powered and portable
applications. Each LDO in the LP2966 has independent
shutdown capability. The LP2966 provides low noise perfor-
mance with low ground pin current in an extremely small
MSOP-8 package (refer to package dimensions and connec-
tion diagram for more information on MSOP-8 package). A
wide range of preset voltage options are available for each
output. In addition to the voltage combinations listed in the
ordering information table, many more are available upon
request with minimum orders. In all, 256 voltage combina-
tions are possible.
Features
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n
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Ultra low drop-out voltage
Low ground pin current
<
1碌A(chǔ) quiescent current in shutdown mode
Independent shutdown of each LDO regulator
Output voltage accuracy
鹵
1%
Guaranteed 150mA output current at each output
Low output noise
Error Flags indicate status of each output
Available in MSOP-8 surface mount packages
Low output capacitor requirements (1碌F)
Operates with Low ESR ceramic capacitors in most
applications
n
Over temperature/over current protection
n
-40藲C to +125藲C junction temperature range
Key Specifications
Dropout Voltage:
Varies linearly with load current. Typically
0.9 mV at 1mA load current and 135mV at 150mA load
current.
Ground Pin Current:
Typically 300碌A(chǔ) at 1mA load current
and 340碌A(chǔ) at 100mA load current (with one shutdown pin
pulled low).
Shutdown Mode:
Less than 1碌A(chǔ) quiescent current when
both shutdown pins are pulled low.
Error Flag:
Open drain output, goes low when the corre-
sponding output drops 10% below nominal.
Precision Output Voltage:
Multiple output voltage options
available ranging from 1.8V to 5.0V with a guaranteed accu-
racy of
鹵
1% at room temperature.
Applications
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Cellular and Wireless Applications
Palmtop/Laptop Computer
GPS systems
Flat panel displays
Post regulators
USB applications
Hand held equipment and multimeters
Wireless data terminals
Other battery powered applications
Typical Application Circuit
10085030
*SD1 and SD2 must be actively terminated through a pull up resistor. Tie to V
IN
if not used.
**ERROR1 and ERROR2 are open drain outputs. These pins must be connected to ground if not used.
# Minimum output capacitance is 1碌F to insure stability over full load current range. More capacitance improves superior dynamic performance and provides
additional stability margin.
漏 2001 National Semiconductor Corporation
DS100850
www.national.com

LP2966IMM-1830 產(chǎn)品屬性

  • 表面貼裝

  • 3mm

  • MSOP

  • 3 x 3 x 0.86mm

  • 8

  • -40 °C

  • 7 V

  • 0.15A

  • 2.7 V

  • +125 °C

  • ±1.5%

  • 0.1 mV/V

  • 0.1 mV/mA

  • 2

  • 1.8 V, 3 V

  • 修復(fù)

  • 3mm

  • 0.86mm

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