spx3819m5-l-tr Exar Corporation, spx3819m5-l-tr Datasheet

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spx3819m5-l-tr

Manufacturer Part Number
spx3819m5-l-tr
Description
500ma, Low-noise Ldo Voltage Regulator
Manufacturer
Exar Corporation
Datasheet
The SPX3819 is a positive voltage regulator with a low dropout voltage and low noise output. In
addition, this device offers a very low ground current of 800µA at 100mA output. The SPX3819 has
an initial tolerance of less than 1% max and a logic compatible ON/OFF switched input. When
disabled, power consumption drops to nearly zero. Other key features include reverse battery
protection, current limit, and thermal shutdown. The SPX3819 includes a reference bypass pin for
optimal low noise output performance. With its very low output temperature coefficient, this device
also makes a superior low power voltage reference.
The SPX3819 is an excellent choice for use in battery-powered applications such as cordless
telephones, radio control systems, and portable computers. It is available in several fixed voltages
-- 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 5.0V -- or with an adjustable output. This device is offered
in 8 pin NSOIC, 8 pin DFN and 5-pin SOT-23 packages.
Jun 5-07 Rev E
FEATURES
■ Low Noise: 40µV Possible
■ High Accuracy: 1%
■ Reverse Battery Protection
■ Low Dropout: 340mV at Full Load
■ Low Quiescent Current: 90µA
■ Zero Off-Mode Current
■ Fixed Output: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V,
■ Available in RoHS Compliant, Lead Free
3.1V, 3.3V, 5.0V. Adj. Output also available.
Packages: 5 Pin SOT-23, 8 Pin Narrow
SOIC and 8 pin 2X3 DFN
500mA, Low-Noise LDO Voltage Regulator
V
IN
+
ENABLE may be tied directly to V
GND
EN
SPX3819 500mA, Low Noise LDO Voltage Regulator
1
3
2
SPX3819
TOP View
1
IN
5
4
TYPICAL APPLICATION CIRCUIT
APPLICATIONS
■ Battery Powered Systems
■ Cordless Phones
■ Radio Control Systems
■ Portable/Palm Top/Notebook Computers
■ Portable Consumer Equipment
■ Portable Instrumentation
■ Bar Code Scanners
■ SMPS Post Regulators
(Opt.)
BYP
V IN
NC
EN
NC
+
2
3
4
1
8 Pin DFN
SPX3819
© 2007 Sipex Corporation
V
OUT
DESCRIPTION
SPX3819
8
7
6
5
ADJ/BYP
V OUT
GND
NC

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spx3819m5-l-tr Summary of contents

Page 1

Low-Noise LDO Voltage Regulator FEATURES ■ Low Noise: 40µV Possible ■ High Accuracy: 1% ■ Reverse Battery Protection ■ Low Dropout: 340mV at Full Load ■ Low Quiescent Current: 90µA ■ Zero Off-Mode Current ■ Fixed Output: 1.2V, 1.5V, ...

Page 2

Power Dissipation ...................................................... Internally Limited Lead Temp. (Soldering, 5 Seconds) ........................................... 260°C Operating Junction Temperature Range ................... -40°C to +125°C Input Supply Voltage ........................................................ -20V to +20V Enable Input Voltage ........................................................ -20V to +20V Input Voltage ................................................................... +2.5V to+16V Operating ...

Page 3

Device V = 4.3V 6 1.0µF L 5.0 4.0 3.0 2.0 1.0 0.0 0 100 200 300 I (mA) L Ground Current vs Load Current 14.0 3.3V Device V = 4.3V 12 ...

Page 4

TYPICAL PERFORMANCE CHARACTERISTICS: Continued 350 3.3V Device 300 C = 1.0µF L 250 200 150 100 100 200 300 I (mA) L Dropout Voltage vs Load Current 130 120 110 100 -40 -20 0 ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS: Continued 8.0 7.5 7.0 6.5 6.0 -40 - Temperature (°C) Ground Current vs Temperature with 500mA Load 1.30 1.25 1.20 1.15 1.10 1.05 1. (V) IN ENABLE ...

Page 6

TYPICAL PERFORMANCE CHARACTERISTICS: Continued 350 Cin = 1uFT, Cout = 1uFT Cin = 1uFT, 300 Cout = 2.2uFT Cin = 1uFT Cout = 10uFT 250 200 150 100 100 1000 10000 Bypass Cap (pF) Output Noise ...

Page 7

The SPX3819 requires an output capacitor for device stability. Its value depends upon the application circuit. In general, linear regulator stability decreases with higher output currents. In applications where the SPX3819 is sourcing less current, a lower output capacitance may ...

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SPX3819 ...

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... L1 @ 260ºC SPX3819M5-L-3-1 0. 260ºC SPX3819M5-L-3-3 0. 260ºC SPX3819M5-L-5-0 0. 260ºC SPX3819M5-L/TR 0. 260ºC SPX3819M5-L-1-2/TR 0. 260ºC SPX3819M5-L-1-5/TR 0. 260ºC SPX3819M5-L-1-8/TR 0. 260ºC SPX3819M5-L-2-5/TR 0. 260ºC SPX3819M5-L-3-0/TR 0. 260ºC SPX3819M5-L-3-1/TR 0. 260ºC SPX3819M5-L-3-3/TR 0. 260ºC SPX3819M5-L-5-0/TR 0. 260ºC SPX3819R2-L-1-2 0. 250ºC SPX3819R2-L-1-2/TR 0 ...

Page 13

... SPX3819M5-3-1 0. 240ºC SPX3819M5-3-3 0. 240ºC SPX3819M5-5-0 0. 240ºC SPX3819M5/TR 0. 240ºC SPX3819M5-1-2/TR 0. 240ºC SPX3819M5-1-5/TR 0. 240ºC SPX3819M5-1-8/TR 0. 240ºC SPX3819M5-2-5/TR 0. 240ºC SPX3819M5-3-0/TR 0. 240ºC SPX3819M5-3-3/TR 0. 240ºC SPX3819M5-5-0/TR 0. 240ºC For further assistance: Email: Sipexsupport@sipex.com WWW Support page: http://www ...

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