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EM1103 Datasheet

LDO Regulator

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EM1103
300mA, High PSRR, Low Noise LDO Regulator
General Description
The EM1103 performs ultra low drop voltage, high
power supply rejection ratio (PSRR), fast response,
low noise linear regulator, and designed to
continuously deliver up to 300mA output current.
The EM1103 offers a range of 1.5V to 4.5V fixed
output, and high output accuracy to 2%.
No by-pass capacitor is needed for this device
and only 1uF ceramic capacitor is required for
stability in any loading conditions. It reduces the
amount of board space necessary for power
applications.
The other features include soft start, current
limit protection, Power-On-Reset function, and
over temperature protection. The EM1103 is
available in SOT-23-5 package.
Ordering Information
Part Number
EM1103J-XXX
Features
Package
SOT-23-5L
XXX : output Voltage
150 : 1.5V
160 : 1.6V
:
:
450 : 4.5V
185 : 1.85V
285 : 2.85V
Remark
Ultra Fast Response in Line/Load Transient
Wide VIN Range from 2.5V to 5.5V
Custom Voltage Available
Ultra Low Dropout Voltage: 200mV @300mA
High Power Supply Rejection Ratio
70dB at 1kHz
55dB at 10kHz
Ultra Low Output Noise Voltage 100uV(RMS)
Low Shutdown Current < 1uA
Only 1uF Ceramic Capacitor required for
stability
Over Temperature Protection
Current Limit Protection
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Cellular Handsets
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
Portable Information Applications
Pin Configuration
VOUT
5
NC
4
1 23
Typical Application Circuit
EN
VIN
C1
1uF
3 EN
1 VIN
VOUT 5
NC 4
GND 2
VOUT
C2
1uF
2011/9/19
A.3
1
Excelliance MOS
Excelliance MOS



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