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MAS9333A8CA12

Description
Regulator
CategoryPower/power management    The power supply circuit   
File Size173KB,11 Pages
ManufacturerMAS
Websitehttps://www.mas-oy.com
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MAS9333A8CA12 Overview

Regulator

MAS9333A8CA12 Parametric

Parameter NameAttribute value
MakerMAS
package instruction,
Reach Compliance Codeunknown
DA9333.001
29 January 2004
MAS9333
150 mA LDO Voltage Regulator IC
This is preliminary information on a
new product under development.
Micro Analog Systems reserves the
right to make any changes without
notice.
High PSRR still when V
IN
is only
V
OUT(NOM)
+ 0.5 V
Low Noise, 40 µVrms, without
External Bypass Capacitor
Fast Start-up Time: 21 µs
Low Dropout: 124 mV @ 150 mA
Low Minimum Output Capacitance
Requirement: 0.23 µF
Stable with Low-ESR Output
Capacitors
DESCRIPTION
MAS9333 is a low dropout voltage regulator, which
offers good performance even at low V
IN
voltage.
The output noise level of MAS9333 is 40 µVrms
without an external bypass capacitor. MAS9333
features very fast start-up time (typically only 21 µs
from start-up to within ±1% of V
OUT(NOM)
) and low
dropout voltage ( 124 mV typical at 150 mA). Also it
has a ripple rejection ability of 53 dB at 10 kHz even
when V
IN
= V
OUT(NOM)
+ 0.5 V.
The very short start-up time of MAS9333 combined
with good performance offers an opportunity to
switch the regulator off and on even in timing critical
and/or noise sensitive applications.
The Equivalent Series Resistance (ESR) range of
output capacitors that can be used with MAS9333 is
very wide. This ESR range from a few mΩ up to a
couple of Ohms combined with no minimum output
current requirement makes the usage of MAS9333
easier and low in cost.
In order to save power the regulator goes into sleep
mode when it is disabled. MAS9333 also includes
an auto-discharge function, wherein a shutdown
transistor turns on and discharges the output
capacitor when MAS9333 is disabled.
An internal thermal protection circuit prevents the
device from overheating. Also the maximum output
current is internally limited.
FEATURES
Good Performance at Low V
IN
Voltage
Pin Compatible with LP2985/LP3985
Integrated Bypass Capacitor
Auto-discharge Function
Internal Thermal Shutdown
Short Circuit Protection
TSOT 5 or WL-CSP Package
Several Output Voltage Options Available,
see Ordering Information p.10
APPLICATIONS
Cellular Phones
Cordless Phones
Accessories
Wireless Systems
Battery Powered Systems
Portable Systems
Radio Control Systems
Low Voltage Systems
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Reach Compliance Code unknown unknown unknown
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