SPX3819 SIPEX [Sipex Corporation], SPX3819 Datasheet

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SPX3819

Manufacturer Part Number
SPX3819
Description
500 mA, Low-Noise LDO Voltage Regulator
Manufacturer
SIPEX [Sipex Corporation]
Datasheet

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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,
■ 5 Pin SOT-23, 8 Pin nSOIC and 8 pin 2X3 DFN
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
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
drop 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.
Date:6/8/2004
3.1V, 3.3V, 5.0V
Packages.
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
Now Available in Lead Free Packaging
5
4
TYPICAL APPLICATION CIRCUIT
(Opt.)
EN
NC
NC
V
BYP
IN
3
4
1
2
+
SPX3819
8 Pin DFN
V
© Copyright 2004 Sipex Corporation
OUT
SPX3819
DESCRIPTION
7
6
8
5
GND
ADJ/BYP
V
NC
OUT

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SPX3819 Summary of contents

Page 1

... 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 drop to nearly zero ...

Page 2

... D(max) J(max into thermal shutdown. The θ of the SPX3819 is 220°C/W mounted board. JA Note 2: Not applicable to output voltage 2V or less. Date:6/8/2004 ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATIONG CONDITIONS ...

Page 3

... Ground Current vs Input Voltage 3.350 3.345 3.340 3.335 3.330 3.325 3.320 3.315 3.310 3.305 3.300 3.295 3.290 4 400 500 Output Voltage vs Input Voltage SPX3819 500mA, Low Noise LDO Voltage Regulator 3 3.3V Device C = 1.0µ 100µ (V) IN 3.3V Device C = 1.0µ ...

Page 4

... IN 340 C = 1.0µ 100µA L 320 300 280 260 240 220 200 - 100 120 Ground Current vs Temperature with 50mA Load SPX3819 500mA, Low Noise LDO Voltage Regulator 4 3.3V Device 1.0µ 100 200 300 400 I (mA) L 3.3V Device 1.0µF ...

Page 5

... Device 3.380 C = 1.0µ 100µA L 3.360 3.340 3.320 3.300 2.280 2.260 2.240 2.220 2.200 - Output Voltage vs Temperature SPX3819 500mA, Low Noise LDO Voltage Regulator 5 3.3V Device V = 4.3µ 1.0µ 500mA L - 100 120 Temperature (°C) 3.3V Device V = 4.3µ ...

Page 6

... Bypass Cap (pF) Output Noise vs Bypass Capacitor Value I 10Hz - 100kHz Load Transient Response for 3.3V Device Date:6/8/2004 100000 1000000 Line Transient Response for 3.3V Device = 10mA, L SPX3819 500mA, Low Noise LDO Voltage Regulator 6 © Copyright 2004 Sipex Corporation ...

Page 7

... The SPX3819’s internal reference is available through the BYP pin. Figure 1 represents a SPX3819 standard appli- cation circuit. The EN (enable) pin is pulled high (>2.0V) to enable the regulator. To disable the regulator, EN < 0.4V. The SPX3819 in Figure 2 illustrates a typical adjustable output voltage configuration. Two resistors (R output voltage is calculated using the formula must be > ...

Page 8

... OUT V 4 ADJ/BYP OUT V ADJ/BYP OUT 5 4 SPX3819 5 Pin SOT- GND EN IN SPX3819 500mA, Low Noise LDO Voltage Regulator ...

Page 9

... Date:6/8/2004 E1 E E1/2 b Seating Plane SEATING PLANE WITH PLATING 1.75 0.25 1.65 0.51 0.25 1.27 8º PACKAGE: 15º SPX3819 500mA, Low Noise LDO Voltage Regulator 9 PACKAGE: 8 PIN SOIC SEE VIEW C Ø1 L2 Ø VIEW BASE METAL CONTACT AREA 8 PIN NSOIC © Copyright 2004 Sipex Corporation Gauge Plane ...

Page 10

... Side View A A1 Date:6/8/2004 Bottom View 2x3 8 Pin DFN JEDEC mo-229C (VCED-2) Variation Symbol SPX3819 500mA, Low Noise LDO Voltage Regulator 10 PACKAGE: 8 PIN DFN Dimensions in (mm) MIN NOM MAX 0.80 0.90 1.00 0 0.02 0.05 - 0.20 - 0.18 0.25 0.30 2.00 BSC 1.50 - 1. ...

Page 11

... BSC 0.95 BSC 1.90 BSC 2.80 BSC 1.60 BSC 0.45 0.60 0.60 REF 0.25 BSC 4º 8º 10º 15º SPX3819 500mA, Low Noise LDO Voltage Regulator 11 PACKAGE: 5 PIN SOT- SEE VIEW C Ø1 Seating Plane 4X Ø VIEW SIDE VIEW b WITH PLATING c BASE METAL 5 PIN SOT-23 © Copyright 2004 Sipex Corporation ...

Page 12

... SPX3819M5-L-5.0/TR = lead free Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 SPX3819 500mA, Low Noise LDO Voltage Regulator 12 ORDERING INFORMATION PACKAGE TYPE 5 Pin SOT-23 5 Pin SOT-23 © Copyright 2004 Sipex Corporation ...

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