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LP3990TLX-1.35 Datasheet

  • LP3990TLX-1.35

  • 150mA Linear Voltage Regulator for Digital Applications

  • 13頁(yè)

  • NSC

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LP3990 150mA Linear Voltage Regulator for Digital Applications
November 2004
LP3990
150mA Linear Voltage Regulator for Digital Applications
General Description
The LP3990 regulator is designed to meet the requirements
of portable, battery-powered systems providing an accurate
output voltage, low noise, and low quiescent current. The
LP3990 will provide a 0.8V output from the low input voltage
of 2V at up to 150mA load current. When switched into
shutdown mode via a logic signal at the enable pin, the
power consumption is reduced to virtually zero.
The LP3990 is designed to be stable with space saving
ceramic capacitors as small as 0.47碌F.
Performance is specified for a -40藲C to 125藲C junction tem-
perature range.
For output voltages other than 0.8V, 1.35V, 1.5V, 1.8V, 2.5V,
2.8V, or 3.3V please contact your local NSC sales office.
Key Specifications
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Input Voltage Range
Output Voltage Range
Output Current
Output Stable - Capacitors
Virtually Zero I
Q
(Disabled)
Very Low I
Q
(Enabled)
Low Output Noise
PSRR
Fast Start Up
2.0 to 6.0V
0.8 to 3.3V
150mA
0.47uF
<
10nA
43uA
150uV
RMS
55dB at 1kHz
105us
Package
All available in Lead Free option.
4 Pin micro SMD
6 pin LLP (SOT23 footprint)
SOT23 - 5
For other package options contact your NSC sales office.
Features
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1% Voltage Accuracy at Room Temperature
Stable with Ceramic Capacitor
Logic Controlled Enable
No Noise Bypass Capacitor Required
Thermal-Overload and Short-Circuit Protection
1 mm x 1.28mm
Applications
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Cellular Handsets
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Hand-Held Information Appliances
Typical Application Circuit
20076801
漏 2004 National Semiconductor Corporation
DS200768
www.national.com

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