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Numéro de référence | EMP8020-18VF05NRR | ||
Description | 300mA CMOS Linear Regulator | ||
Fabricant | Elite Semiconductor | ||
Logo | |||
ESMT/EMP
Preliminary
EMP8020
Fast Ultra High-PSRR, Low-Noise, Low-Dropout,
300mA CMOS Linear Regulator
General Description
The EMP8020 low-dropout (LDO) CMOS linear regulator
features an ultra-high power supply rejection ratio (78dB
at 1kHz), low output voltage noise (48µV), low dropout
voltage, low quiescent current (50µA), and fast
transient response. It guarantees a delivery of 300mA
output current, and supports preset output voltages
ranging from 0.8V to 4.75V with 0.05V increments.
The EMP8020 is ideal for battery-powered applications
because of its low quiescent current consumption and
its 1nA shutdown mode. The regulator provides fast
turn-on and start-up time by using dedicated circuitry to
pre-charge an optional external bypass capacitor. This
bypass capacitor is used to reduce the output voltage
noise without adversely affecting the load transient
response. The high power supply rejection ratio of the
EMP8020 holds well for low input voltages typically
encountered in battery operated systems. The regulator
is stable with small ceramic capacitive loads (2.2µF
typical).
Additional features include bandgap voltage
reference, constant current limiting, and thermal
overload protection. Both of Miniature 5-pin
SC-70-5/SOT-23-5 and 4-pin SC-82-4 package options
are offered to provide flexibility for different
applications.
Applications
Wireless handsets
PCMCIA cards
DSP core power
Hand-held instruments
Battery-powered systems
Portable information appliances
Features
Miniature SC-70-5,SOT-23-5 and SC-82-4
packages
300mA guaranteed output current
PSRR 78dB typical at 1kHz
70dB typical at 10kHz
48µV RMS output voltage noise (10Hz to 100kHz)
(Vout=2.8V, Cbypass=10nF)
305mV typical dropout at 300mA (Vout=2.8V)
50µA typical quiescent current
1nA typical shutdown mode
Fast line and load transient response
140µs typical fast turn-on time (Vout=2.8V,
Cbypass=10nF)
2.2V to 5.5V input range
Stable with small ceramic output capacitors
Over-temperature and over-current protection
±2% output voltage tolerance
Typical Application
EMP8020
15
VIN VIN VOUT
1uF
3
ON/OFF
EN
* Use 2.2uF for VOUT < 1.2V
CC (NC)
GND
2
4
10nF
VOUT
1uF *
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: Mar. 2011
Revision: 0.7
1/15
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Pages | Pages 15 | ||
Télécharger | [ EMP8020-18VF05NRR ] |
No | Description détaillée | Fabricant |
EMP8020-18VF05NRR | 300mA CMOS Linear Regulator | Elite Semiconductor |
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