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LP2985IM5X-4.5 Datasheet

  • LP2985IM5X-4.5

  • VOLT REGULATOR|FIXED|+4.5V|BIPOLAR|TSOP|6PIN|PLASTIC

  • 472.32KB

  • 18頁

  • ETC

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LP2985 Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD
Packages
May 2002
LP2985
Micropower 150 mA Low-Noise Ultra Low-Dropout
Regulator in SOT-23 and micro SMD Packages
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2985 is a 150 mA, fixed-output voltage regulator
designed to provide ultra low-dropout and low noise in bat-
tery powered applications.
Using an optimized VIP
鈩?/div>
(Vertically Integrated PNP) pro-
cess, the LP2985 delivers unequalled performance in all
specifications critical to battery-powered designs:
Dropout Voltage:
Typically 300 mV
@
150 mA load, and
7 mV
@
1 mA load.
Ground Pin Current:
Typically 850 碌A(chǔ)
@
150 mA load, and
75 碌A(chǔ)
@
1 mA load.
Enhanced Stability:
The LP2985 is stable with output ca-
pacitor ESR as low as 5 m鈩? which allows the use of ceramic
capacitors on the output.
Sleep Mode:
Less than 1 碌A(chǔ) quiescent current when
ON/OFF pin is pulled low.
Smallest Possible Size:
SOT-23 and micro SMD packages
use absolute minimum board space.
Precision Output:
1% tolerance output voltages available
(A grade).
Low Noise:
By adding a 10 nF bypass capacitor, output
noise can be reduced to 30 碌V (typical).
Multiple voltage options, from 2.5V to 5.0V, are available as
standard products. Consult factory for custom voltages.
Features
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Ultra low dropout voltage
Guaranteed 150 mA output current
Smallest possible size (SOT-23, micro SMD package)
Requires minimum external components
Stable with low-ESR output capacitor
<
1 碌A(chǔ) quiescent current when shut down
Low ground pin current at all loads
Output voltage accuracy 1% (A Grade)
High peak current capability
Wide supply voltage range (16V max)
Low Z
OUT
: 0.3鈩?typical (10 Hz to 1 MHz)
Overtemperature/overcurrent protection
鈭?0藲C to +125藲C junction temperature range
Custom voltages available
Applications
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n
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n
Cellular Phone
Palmtop/Laptop Computer
Personal Digital Assistant (PDA)
Camcorder, Personal Stereo, Camera
Block Diagram
10014001
VIP
鈩?/div>
is a trademark of National Semiconductor Corporation.
漏 2002 National Semiconductor Corporation
DS100140
www.national.com

LP2985IM5X-4.5 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 16 V

  • 4.5 V

  • 0.003 V at 0 mA, 0.01 V at 1 mA, 0.06 V at 10 mA, 0.15 V at 50 mA, 0.35 V at 150 mA

  • 0.15 A

  • 1

  • Fixed

  • + 125 C

  • SMD/SMT

  • SOT-23

  • 0.014 % / V

  • - 40 C

  • Reel

  • 3000

  • +/- 3 %

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