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Número de pieza | EMP8965-12VF05GRR | |
Descripción | 600mA Micropower CMOS Linear Regulator | |
Fabricantes | Elite Semiconductor | |
Logotipo | ||
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EMP8965
Fast Ultra High-PSRR, Low-Noise, Low-Dropout,
600mA Micropower CMOS Linear Regulator
General Description
The EMP8965 low-dropout (LDO) CMOS linear regulators
feature ultra-high power supply rejection ratio (75dB at
1kHz), low output voltage noise (30µV), low dropout
voltage (270mV), low quiescent current (110µA), and fast
transient response. It guarantees delivery of 600mA output
current, and supports preset output voltages ranging from
1.2V to 3.3V with 0.1V increment (except for 1.85V and
2.85V).
The EMP8965 is ideal for battery-powered applications by
virtue of its low quiescent current consumption and its 1nA
shutdown mode of logical operation. 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 EMP8965 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 regulation fault detection,
bandgap voltage reference, constant current limiting and
thermal overload protection. Available in miniature 5-pin
SOT-89-5 package options, SOT-23-5 and SOT-23-6
package options are also offered to provide additional
flexibility for different applications.
EMP products is RoHS compliant.
Features
Miniature SOT-23-5, SOT-23-6and SOT-89-5 packages
600mA guaranteed output current
75dB typical PSRR at 1kHz
30µV RMS output voltage noise (10Hz to 100kHz)
270mV typical dropout at 600mA
110µA typical quiescent current
1nA typical shutdown mode
Fast line and load transient response
80µs typical fast turn-on time
2.5V to 5.5V input range
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
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 1/20
1 page ESMT/EMP
Pin Functions
EMP8965
Name
VOUT
VIN
GND
CC
SHDN
FAULT
SOT-23-5 SOT-89-5 SOT-23-6
Function
5 5 6 Output Voltage Feedback.
Supply Voltage Input. Require a minimum input capacitor of close to
141
1µF to ensure stability and sufficient decoupling from the ground pin.
2 2 2 Ground Pin.
Compensation Capacitor. Connect an optimum 33nF noise bypass
4 1 4 capacitor between the CC and the ground pins to reduce noise in
VOUT.
Shutdown Input. Set the regulator into the disable mode by pulling the
SHDN pin low. To keep the regulator on during normal operation,
333
connect the SHDN pin to VIN. The SHDN pin must not exceed VIN under
all operating conditions.
Fault Detection Output. The FAULT pin goes low when the voltage
regulating function fails. Because the FAULT pin connects to the
open-drain output of a NMOS transistor, a typical 100kΩ pull-up resistor
5
is required to provide the necessary output voltage. The FAULT pin
enters the high impedance state during shutdown and it should be
connected to ground if unused.
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 5/20
5 Page ESMT/EMP
EMP8965
Typical Performance Characteristics
Unless otherwise specified, VIN = VOUT (NOM) + 1V, CIN = COUT = 2.2µF, CCC = 33nF, TA = 25°C, V SHDN = VIN. (Continued)
5.3V
4.3V
Line Transient
VOUT=3.3V, IOUT=10mA
5.3V
4.3V
VOUT=3.3V, IOUT=600mA
200μs/DIV
Current Limit
200μs/DIV
Enable and Disable
100ms/DIV
Fault Detection Threshold vs. Load Current
400μs/DIV
Supply Current vs. Input Voltage (SOT-89-5)
Load Current (mA)
Line Transient
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.1 11/20
11 Page |
Páginas | Total 20 Páginas | |
PDF Descargar | [ Datasheet EMP8965-12VF05GRR.PDF ] |
Número de pieza | Descripción | Fabricantes |
EMP8965-12VF05GRR | 600mA Micropower CMOS Linear Regulator | Elite Semiconductor |
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