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PDF LP3982 Data sheet ( Hoja de datos )
| Número de pieza | LP3982 | |
| Descripción | Micropower/ Ultra Low-Dropout/ Low-Noise/ 300mA CMOS Regulator | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LP3982 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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July 2002
LP3982
Micropower, Ultra Low-Dropout, Low-Noise, 300mA
CMOS Regulator
General Description
The LP3982 low-dropout (LDO) CMOS linear regulator is
available in 1.8V, 2.5V, 2.77V, 2.82V, 3.0V, 3.3V, and adjust-
able versions. They deliver 300mA of output current. Pack-
aged in an 8-Pin MSOP, the LP3982 is pin and package
compatible with Maxim’s MAX8860. The LM3982 is also
available in the small footprint LLP package.
The LP3982 suits battery powered applications because of
its shutdown mode (1nA typ), low quiescent current (90µA
typ), and LDO voltage (120mV typ). The low dropout voltage
allows for more utilization of a battery’s available energy by
operating closer to its end-of-life voltage. The LP3982’s
PMOS output transistor consumes relatively no drive current
compared to PNP LDO regulators.
This PMOS regulator is stable with small ceramic capacitive
loads (2.2µF typ).
These devices also include regulation fault detection, a
bandgap voltage reference, constant current limiting and
thermal overload protection.
Features
n MAX8860 pin, package and spec. compatible
n LLP space saving package
n 300mA guaranteed output current
n 120mV typical dropout @ 300mA
n 90µA typical quiescent current
n 1nA typical shutdown mode
n 60dB typical PSRR
n 2.5V to 6V input range
n 120µs typical turn-on time
n Stable with small ceramic output capacitors
n 37µV RMS output voltage noise (10Hz to 100kHz)
n Over temperature/over current protection
n ±2% output voltage tolerance
Applications
n Wireless handsets
n DSP core power
n Battery powered electronics
n Portable information appliances
Application Circuit
20036931
© 2002 National Semiconductor Corporation DS200369
www.national.com
1 page  
Typical Performance Characteristics Unless otherwise specified, VIN = VO + 0.5V, CIN = COUT =
2.2µF, CCC = 33nF, TJ = 25˚C, VSHDN = VIN. (Continued)
Output Noise Spectral Density
Output Noise (10Hz to 100kHz)
20036905
Output Impedance vs. Frequency
20036906
Line Transient Response
Load Transient
20036907
20036908
Shutdown Response
20036909
5
20036910
www.national.com
5 Page 
Physical Dimensions inches (millimeters)
unless otherwise noted
8-Pin MSOP
NS Package Number MUA08A
11 www.national.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LP3982.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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