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LP3984IMF-1.8 Datasheet

  • LP3984IMF-1.8

  • Micropower, 150mA Ultra Low-Dropout CMOS Voltage Regulator i...

  • 52頁

  • NSC

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LP3984 Micropower, 150mA Ultra Low-Dropout CMOS Voltage Regulator in Subminiature 4-I/O
micro SMD Package
November 2001
LP3984
Micropower, 150mA Ultra Low-Dropout CMOS Voltage
Regulator in Subminiature 4-I/O micro SMD Package
General Description
The LP3984 is designed for portable and wireless applica-
tions with demanding performance and space requirements.
The LP3984鈥檚 performance is optimized for battery powered
systems to deliver extremely low dropout voltage and low
quiescent current. Regulator ground current increases only
slightly in dropout, further prolonging the battery life.
Power supply rejection is better than 60 dB at low frequen-
cies and starts to roll off at 10 kHz. High power supply
rejection is maintained down to lower input voltage levels
common to battery operated circuits.
The device is ideal for mobile phone and similar battery
powered wireless applications. It provides up to 150 mA,
from a 2.5V to 6V input, consuming less than 1.2碌A(chǔ) in
disable mode and has fast turn-on time less than 20碌s.
The LP3984 is available in micro SMD and 5 pin SOT-23
package. Performance is specified for 鈭?0藲C to +125藲C
temperature range and is available in 1.5V, 1.8V, 2.0V, and
3.1V output voltages. For other output voltage options from
1.5V to 3.5V, please contact National Semiconductor sales
office.
n
n
n
n
n
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60dB PSRR at 1kHz, 40dB at 10kHz
@
3.1V
IN
鈮?.2碌A(chǔ)
quiescent current when shut down
Fast Turn-On time: 20 碌s (typ.)
75mV typ dropout with 150mA load
鈭?0 to +125藲C junction temperature range for operation
1.5V, 1.8V, 2.0V, and 3.1V
Features
n
n
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Miniature 4-I/O micro SMD and SOT-23-5 package
Logic controlled enable
Stable with tantalum capacitors
1 碌F Tantalum output capacitor
Fast turn-on
Thermal shutdown and short-circuit current limit
Applications
n
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CDMA cellular handsets
Wideband CDMA cellular handsets
GSM cellular handsets
Portable information appliances
Key Specifications
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2.5 to 6.0V input range
n
150mA guaranteed output
Typical Application Circuit
20020402
Note: Pin Numbers in parenthesis indicate micro SMD package.
漏 2001 National Semiconductor Corporation
DS200204
www.national.com

LP3984IMF-1.8 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 6 V

  • 1.8 V

  • 0.0025 V at 1 mA, 0.04 V at 50 mA, 0.08 V at 100 mA, 0.12 V at 150 mA

  • 0.15 A

  • 1

  • Fixed

  • + 125 C

  • SMD/SMT

  • SOT-23

  • 250 mW

  • - 40 C

  • Reel

  • 1000

  • +/- 1.2 %

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