Datasheet > LM2925

LM2925

更新时间： 2024-01-03 13:59:05

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
8页	226K
描述
Low Dropout Regulator with Delayed Reset

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

LM2925 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	, SIP5,.1,67TB	Reach Compliance Code：	unknown
风险等级：	5.92	可调性：	FIXED
标称回动电压 1：	0.8 V	最大绝对输入电压：	26 V
JESD-609代码：	e0	最大电网调整率：	0.05%
最大负载调整率：	0.05%	输出次数：	1
端子数量：	5	工作温度TJ-Max：	150 °C
工作温度TJ-Min：	-40 °C	最大输出电流 1：	0.5 A
标称输出电压 1：	5 V	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	SIP5,.1,67TB	认证状态：	Not Qualified
子类别：	Other Regulators	表面贴装：	NO
技术：	BIPOLAR	端子面层：	Tin/Lead (Sn/Pb)
端子节距：	1.7 mm	端子位置：	SINGLE
最大电压容差：	5%

LM2925 数据手册

Typical Performance Characteristics (Continued)

Quiescent Current

Load Transient Response

DS005268-18

DS005268-19

DS005268-17

Peak Output Current

Maximum Power

Output Capacitor ESR

Dissipation (TO-220)

DS005268-20

DS005268-22

DS005268-21

Quiescent Current: The part of the positive input current

that does not contribute to the positive load current. The

regulator ground lead current.

Definition of Terms

Dropout Voltage: The input-output voltage differential at

which the circuit ceases to regulate against further reduction

in input voltage. Measured when the output voltage has

dropped 100 mV from the nominal value obtained at 14V in-

put, dropout voltage is dependent upon load current and

junction temperature.

Ripple Rejection: The ratio of the peak-to-peak input ripple

voltage to the peak-to-peak output ripple voltage.

Temperature Stability of V_O: The percentage change in ou-

put voltage for a thermal variation from room temperature to

either temperature extreme.

Input Voltage: The DC voltage applied to the input terminals

with respect to ground.

Application Hints

Input-Output Differential: The voltage difference between

the unregulated input voltage and the regulated output volt-

age for which the regulator will operate.

EXTERNAL CAPACITORS

The LM2925 output capacitor is required for stability. Without

it, the regulator output will oscillate, sometimes by many

volts. Though the 10 µF shown is the minimum recom-

mended value, actual size and type may vary depending

upon the application load and temperature range. Capacitor

effective series resistance (ESR) also effects the IC stability.

Since ESR varies from one brand to the next, some bench

work may be required to determine the minimum capacitor

value to use in production. Worst-case is usually determined

at the minimum junction and ambient temperature and maxi-

mum load expected.

Line Regulation: The change in output voltage for a change

in the input voltage. The measurement is made under condi-

tions of low dissipation or by using pulse techniques such

that the average chip temperature is not significantly af-

fected.

Load Regulation: The change in output voltage for

change in load current at constant chip temperature.

Long Term Stability: Output voltage stability under acceler-

ated life-test conditions after 1000 hours with maximum

rated voltage and junction temperature.

Output Noise Voltage: The rms AC voltage at the output,

with constant load and no input ripple, measured over a

specified frequency range.

Output capacitors can be increased in size to any desired

value above the minimum. One possible purpose of this

would be to maintain the output voltages during brief condi-

tions of negative input transients that might be characteristic

of a particular system.

www.national.com

1 2 3 456 7 8

下载PDF

与LM2925相关器件

型号	品牌	描述	获取价格	数据表
LM2925T	HTC	Low Dropout Regulator with Delayed Reset	获取价格
LM2925T	NSC	Low Dropout Regulator with Delayed Reset	获取价格
LM2925T/A+	ETC	Positive Fixed Voltage Regulator	获取价格
LM2925T/B+	ETC	Positive Fixed Voltage Regulator	获取价格
LM2926	NSC	Low Dropout Regulator with Delayed Reset	获取价格
LM2926T	NSC	Low Dropout Regulator with Delayed Reset	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2925

LM2925 技术参数

LM2925 数据手册

与LM2925相关器件

与LM2925相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2925

LM2925 技术参数

LM2925 数据手册

与LM2925相关器件

与LM2925相关文章

您还可以找

您在本页遇到什么问题？