Datasheet > SPX3819M3-L-5.0

SPX3819M3-L-5.0

更新时间： 2024-01-24 22:10:43

品牌	Logo	应用领域
西伯斯 - SIPEX		光电二极管输出元件调节器
页数	文件大小	规格书
14页	209K
描述
Fixed Positive LDO Regulator, 5V, 0.7V Dropout, PDSO4, SOT-223, 3 PIN

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SPX3819M3-L-5.0 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	SOT-223, 3 PIN	Reach Compliance Code：	compliant
风险等级：	5.64	最大回动电压 1：	0.7 V
最大输入电压：	16 V	最小输入电压：	6 V
JESD-30 代码：	R-PDSO-G4	JESD-609代码：	e3
长度：	6.5024 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	4
工作温度TJ-Max：	125 °C	工作温度TJ-Min：	-40 °C
最大输出电流 1：	0.5 A	最大输出电压 1：	5.1 V
最小输出电压 1：	4.9 V	标称输出电压 1：	5 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	LSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, LOW PROFILE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	座面最大高度：	1.7 mm
表面贴装：	YES	端子面层：	TIN
端子形式：	GULL WING	端子节距：	2.3 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	3.505 mm	Base Number Matches：	1

SPX3819M3-L-5.0 数据手册

SPX3819

Application Hints

In general, linear regulator stability decreases with higher

output currents. In most applications the SPX3819 is

operating at few milliamps. In these applications the output

capacitance can be further reduced. For example, when the

regulator is running at 10mA output current the output

capacitance value is half compared to the same regulator

that is running at 150mA.

The SPX3819 requires an output capacitor for device stability.

The value required varies greatly depending upon the

application circuit. The high frequency characteristics of

electrolytic capacitors depend greatly on the type and also on

the manufacturer. Sometimes bench testing is the only means

to determine the proper capacitor type and value. The high

quality 2.2µF aluminum electrolytic capacitor covers all

general application circuits; this stability can be obtained with

a tantalum electrolytic value of 1µF.

With the SPX3819 adjustable regulator, the minimum value

of output capacitance is a function of the output voltage.

The value decreases with higher output voltages, since the

closed loop gain is increased.

Typical Applications Circuits

The SPX3819 provides access to the internal reference. A 10µF capacitor on the Ref BYP pin will provide a significant reduction in

output noise. This pin may be left unconnected if the output noise is not a major concern. The SPX3819 start-up speed is inversely

proportional to the size of its capacitor. Applications requiring a slow ramp-up of output voltage should consider larger values of

C_BYP. If the rapid turn-ON is necessary, omit bypass capacitor.

Figure 1 shows SPX3819 standard application circuit. The EN (enable) pin is pulled high (>2.0V) to enable the regulator. To disable

the regulator, EN < 0.6V.

V_IN

V_OUT

SPX3819

SOT-23

GND

BYP

(Optn)

Hi-ON

Lo-OFF

Top View

Fig. 1

The SPX3819 in figure 2 shows adjustable output voltage configuration. Two resistors set the output voltage. The formula for output

voltage is:

V_OUT= 1.235V x 1 +

Resistor values are not critical as the Adj pin has high input impedance, for best results use resistors of 47kΩ or less. A capacitor for

Adj to ground will provide improved noise performance.

V_IN

V_OUT

SPX3819

SOT-23

GND

ADJ

Byp

(Optn)

Hi-ON

Lo-OFF

Top View

Fig. 2

Rev. 10/30/00

1...4 5 678 9 10...14

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