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发布者:微桥 发布时间:2011/8/3 阅读:6230次    关键字: EMP8736
EMP8736-Fast Ultra High-PSRR,Low-Noise,300mA LDO


EMP8736-Fast Ultra High-PSRR,Low-Noise,300mA CMOS Linear Regulator DataSheet

General Description
    The EMP8736 features ultra-high power supply rejection ratio, low output voltage noise, low dropout voltage, low quiescent current and fast transient response. It guarantees delivery of 300mA output current and supports adjustable output voltages by using two external resistors.
    Based on its low quiescent current consumption and its less than 1μA shutdown mode of logical operation, the EMP8736 is ideal for battery-powered applications. The high power supply rejection ratio of the EMP8736 holds well for low input voltages typically encountered in battery-operated systems. The regulator is stable with small ceramic capacitive loads (1μF typical). The EMP8736 is available in miniature SOT-23-5 packages.

Features
 300mA guaranteed output current
 65dB typical PSRR at 1kHz
 110μV RMS output voltage noise (10Hz to 100kHz)
 290mV typical dropout at 300mA
 57μA typical quiescent current
 Less than 1μA typical shutdown mode
 Fast line and load transient response
 2.2V to 5.5V input range
 Auto-discharge during chip disable
 80μs typical turn-on time
 Stable with small ceramic output capacitors
 Over temperature and over current protection
 ±2% output voltage tolerance

Applications
  Wireless handsets
  PCMCIA cards
  DSP core power
  Hand-held instruments
  Battery-powered systems
  Portable information appliances

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