SI-3003KWF

更新时间： 2024-01-25 22:01:09

品牌	Logo	应用领域
急速微 - ALLEGRO		线性稳压器IC 调节器电源电路输出元件局域网
页数	文件大小	规格书
9页	261K
描述
1A, Low-Dropout, Dual Outpout, 1.8V & 2.5V Regulator

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技术参数
数据手册

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SI-3003KWF 技术参数

生命周期：	Obsolete	零件包装代码：	SFM
包装说明：	,	针数：	3
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
最大回动电压 1：	1 V	最大输入电压：	30 V
最小输入电压：	6 V	JESD-30 代码：	R-PSFM-T3
功能数量：	1	端子数量：	3
工作温度TJ-Max：	150 °C	工作温度TJ-Min：	-40 °C
最大输出电流 1：	0.8 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	封装形状：	RECTANGULAR
封装形式：	FLANGE MOUNT	认证状态：	Not Qualified
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	表面贴装：	NO
端子形式：	THROUGH-HOLE	端子位置：	SINGLE
Base Number Matches：	1

SI-3003KWF 数据手册

SI-3003KWF

1 A, Low-Dropout,

Dual Output,

1.8 V & 2.5 V Regulator

APPLICATIONS INFORMATION

Input Capacitor (C_I, 0.1 10 µF). This is necessary

either when the input line includes inductance or when the

wiring is long.

Heat Radiation and Reliability. The reliability of the

IC is directly related to the junction temperature (T_J) in its

operation. Accordingly, careful consideration should be

given to heat dissipation.

Output Capacitor (C_O, >22 µF). This device is not

designed for a use with a very low ESR output capacitor

such as a ceramic capacitor. Output oscillation may occur

with that kind of capacitor.

The inner frame on which the integrated circuit is mounted

is connected to the GND terminal (pin 3). Therefore, it is

very effective for heat radiation to enlarge the copper area

that is connected to the GND terminal. The graph on page

2 illustrates the effect of thermal resistance on the allow-

able package power dissipation.

ENABLE Input. The ENABLE (control) input features

an internal pull-up resistor. Leaving this input open causes

the output to turn on.

The junction temperature (T_J) can be determined from

either of the following equations:

Parallel Operation. Parallel operation to increase load

current is not permitted.

T_J= (P_D× R_θJA) + T_A

Determination of DC Input Voltage. The minimum

input voltage V_I(min) should be higher than the sum of the

fixed output voltage and the maximum rated dropout

voltage.

T_J= (P_D× R_θJC) + T_C

where P_D= I_O1(V_I– V_O1) + I_O2(V_I– V_O2) and

R_θJC= 7°C/W.

Overcurrent Protection. The SI-3000KWF series has

a built-in fold-back type overcurrent protection circuit,

which limits the output current at a start-up mode. It thus

cannot be used in applications that require current at the

start-up mode such as:

(1) constant-current load,

(2) power supply with positive and negative outputs to

common load (a center-tap type power supply), or

(3) raising the output voltage by putting a diode or a

resistor between the device ground and system ground.

Thermal Protection. Circuitry turns off the pass

transistor when the junction temperature rises above 135°C.

It is intended only to protect the device from failures due to

excessive junction temperatures and should not imply that

output short circuits or continuous overloads are permitted.

115NortheastCutoff, Box15036

Worcester,Massachusetts01615-0036

1...3 4 567 8 9

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