Datasheet > LM39300R-1.5

LM39300R-1.5

更新时间： 2024-02-24 03:49:35

品牌	Logo	应用领域
韩国泰进 - HTC		稳压器
页数	文件大小	规格书
8页	282K
描述
3A Low-Voltage Low-Dropout Regulator

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LM39300R-1.5 技术参数

生命周期：	Contact Manufacturer	包装说明：	TO-263, 3 PIN
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.68
最大回动电压 1：	0.55 V	最大输入电压：	16 V
最小输入电压：	2.25 V	JESD-30 代码：	R-PSSO-G3
功能数量：	1	端子数量：	3
工作温度TJ-Max：	125 °C	工作温度TJ-Min：	-40 °C
最大输出电流 1：	3 A	最大输出电压 1：	1.53 V
最小输出电压 1：	1.47 V	标称输出电压 1：	1.5 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	TO-263
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	表面贴装：	YES
端子形式：	GULL WING	端子位置：	SINGLE
Base Number Matches：	1

LM39300R-1.5 数据手册

3A Low-Voltage Low-Dropout Regulator

LM39300/39301/39302

Minimum Load Current

The LM39300/1/2 regulator is specified between finite loads.

If the output current is too small, leakage currents dominate and the output voltage rises.

A 10mA minimum load current is necessary for proper regulation.

Transient Response and 3.3V to 2.5V Conversion

The LM39300/1/2 has excellent transient response to varia-tions in input voltage and load current. The device has

been designed to respond quickly to load current variations and input voltage variations. Large output capacitors are

not required to obtain this performance. A standard 47F output capacitor, preferably tantalum, is all that is required.

Larger values help to improve performance even further.By virtue of its low-dropout voltage, this device does not

saturate into dropout as readily as similar NPN-based de-signs. When converting from 3.3V to 2.5V, the NPN-based

regulators are already operating in dropout, with typical dropout requirements of 1.2V or greater. To convert down to

2.5V without operating in dropout, NPN-based regulators require an input voltage of 3.7V at the very least. The

LM39300/1/2 regulator will provide excellent performance with an input as low as 3.0V. This gives the PNP-based

regulators a distinct advantage over older, NPN-based linear regulators.

Error Flag

The LM39301 version features an error flag circuit which monitors the output voltage and signals an error condition

when the voltage drops 5% below the nominal output voltage. The error flag is an open-collector output that can sink

10mA during a fault condition.Low output voltage can be caused by a number of problems, including an overcurrent

fault (device in current limit) or low input voltage. The flag is inoperative during overtemperature shutdown.

Enable Input

The LM39301 version features an enable input for on/off control of the device. Its shutdown state draws “zero” current

(only microamperes of leakage). The enable input is TTL/ CMOS compatible for simple logic interface, but can be

connected to up to 20V. When enabled, it draws approxi-mately 15A.

Adjustable Regulator Design

The LM39302 allows programming the output voltage any-where between 1.25V and the 16V maximum operating

rating of the family. Two resistors are used. Resistors can be quite large, up to 1MΩ, because of the very high input

impedance and low bias current of the sense comparator: The resistor values are calculated by : R1=R2(Vout/1.250-

Where VO is the desired output voltage. Figure 1 shows component definition. Applications with widely varying load

currents may scale the resistors to draw the minimum load current required for proper operation (see below).

HTC

1...5 6 78

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与LM39300R-1.5相关器件

型号	品牌	描述	获取价格	数据表
LM39300R-1.8	HTC	3A Low-Voltage Low-Dropout Regulator	获取价格
LM39300R-2.5	HTC	3A Low-Voltage Low-Dropout Regulator	获取价格
LM39300R-3.3	HTC	3A Low-Voltage Low-Dropout Regulator	获取价格
LM39300R-5.0	HTC	3A Low-Voltage Low-Dropout Regulator	获取价格
LM39300T	HTC	3A Low-Voltage Low-Dropout Regulator	获取价格
LM39300T-1.5	HTC	3A Low-Voltage Low-Dropout Regulator	获取价格

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