se5218 seawardinc, se5218 Datasheet

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se5218

Manufacturer Part Number
se5218
Description
500ma Cmos Ldo Voltage Regulator
Manufacturer
seawardinc
Datasheet

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Manufacturer
Quantity
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Part Number:
se5218ALG-LF
Manufacturer:
SEAWARD原装
Quantity:
20 000
Revision 4/30/2008
Description
linear regulators are designed for portable battery
powered applications, which require low noise
environment, fast enable response time, and low
dropout voltage. Each device contains a bandgap
voltage reference, an error amplifier, a PMOS power
transistor, and resistors for setting output voltage, and
current limit and temperature limit protection circuits.
low cost capacitors and requires a minimum output
capacitor of 1.0μF.
1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V.
Pin Configuration
The SE5218 series of fixed output low dropout
The SE5218 has been designed to be used with
Preliminary and all contents are subject to change without prior notice.
Standard voltage versions are
© Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 1
500mA CMOS LDO Voltage Regulator
(Preliminary)
Features
Applications
Application Diagram
Typical 175mV Dropout Voltage at 150mA.
Fast Enable Turn-On Time of 20μs (Typ.)
Excellent Line and Load Regulation.
High Accuracy Output Voltage of 2%.
Ultra-Low Ground Current at 65μA (Typ.)
Disable Current Less than 0.3μA (Typ.)
Thermal Protection.
Standard SOT-23-5L Packages.
USB removable devices
MPEG4 devices
Wireless LAN’s
Hand-Held Instrumentation.
Portable DVD players
Digital camera
SE5218

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se5218 Summary of contents

Page 1

... PMOS power transistor, and resistors for setting output voltage, and current limit and temperature limit protection circuits. The SE5218 has been designed to be used with low cost capacitors and requires a minimum output capacitor of 1.0μF. Standard voltage versions are 1 ...

Page 2

... Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 2 500mA CMOS LDO Voltage Regulator (Preliminary) Ordering Information 3.3V SE5218ALG-LF 2.8V SE5218BLG-LF 2.5V SE5218CLG-LF 1.8V SE5218DLG-LF 1.5V SE5218ELG-LF 3.0V SE5218FLG-LF (1) Symbol Θ Symbol V +2 ...

Page 3

... Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 3 500mA CMOS LDO Voltage Regulator (Preliminary) Electrolytic capacitor ); I OUT Conditions SE5218 – 1.5(V =3.3V) IN SE5218 – 1.8(V =3.3V) IN SE5218 – 2.5 SE5218 – 2.8 SE5218 – 3.0 SE5218 – 3 +1)V to 5.5V IN OUT I = 10mA to OUT +0.8)V 250mA IN OUT or 2 ...

Page 4

... Note 7: The Cin or Cout should be chosen carefully. Please refer to the Application Hints Block Diagram Revision 4/30/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 4 500mA CMOS LDO Voltage Regulator (Preliminary) (ambient temperature) is calculated using SE5218 = D(MAX) ...

Page 5

... Transient Response (VOUT = 3.3V) 10000 SE5218 Load Regulation (VOUT = 3.3V) (VIN = 5V, IOUT = 10mA to 500mA) 100 200 300 400 IOUT (mA IOUT (VIN = 5V, IOUT = 10mA to 500mA) 100 200 300 400 IOUT (mA) (IOUT = 10mA to 40mA) 500 ...

Page 6

... Application Hints Like any low dropout regulator, SE5218 requires external capacitors to ensure stability. external capacitors must be carefully selected to ensure performance. Input Capacitor An input capacitor of at least 1μF is required. The inexpensive Electrolytic capacitor is preferred. The value can be increased without upper limit. Output Capacitor An output capacitor is required for stability ...

Page 7

... Last Updated - 4/30/2008 Revision 4/30/2008 Preliminary and all contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. • www.seawardinc.com • Page 7 500mA CMOS LDO Voltage Regulator (Preliminary) H DIM J SE5218 DIM ENSIONS INCHES MAX MIN MAX A 0.110 0.120 2 ...

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