Datasheet > GM62501.8ST3T

GM62501.8ST3T

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
GAMMA		稳压器
页数	文件大小	规格书
13页	348K
描述
250mA ULTRA-LOW DROPOUT POSITIVE VOLTAGE REGULATOR

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数据手册

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GM62501.8ST3T 数据手册

DIRECTIONS FOR USAGE

Notes on Usage

1. Please use this IC within the stipulated absolute maximum ratings as the IC is liable to malfunction

outside of such parameters.

2. There is a possibility theat, oscillation may occur as a result of the impedance present between the

power supply and the IC's input. Where impedance is 10W or more, please use a capacitor (C )

of at least 1µF.

With a large output current, operations can be stabilised by increasing capacitor size (C ). If C is

IN IN

small and capacitor size (C ) is increased, there is a possibility of oscillation due to input impedance.

In such cases, operations can be stabilised by either increasing the size of C or decreasing the size of C .

IN L

3. Please ensure the output current (I

) is less than Pd ÷ (V - V

) and does not exceed the

OUT

stipulated continuous total power dissipation value (Pd) for the package.

TEST CIRCUIT

Circuit 1

GM6250

1µF

(Tantalum)

1µF

(Tantalum)

Circuit 2

GM6250

Open

CALCULATING POWER DISSIPATION

The GM6250 series precision linear regulators include thermal shutdown and current limit circuitry to

protect the devices. However, high power regulators normally operate at high junction temperatures so it

is important to calculate the power dissipation and junction temperatures accurately to be sure that you

use and adequate heat sink.

The thermal characteristics of an IC depend four factors:

1. Maximum Ambient Temperature T (°C)

2. Power Dissipation P (Watts)

3. Maximum Junction Temperature T (°C)

4. Thermal Resistance Junction to ambient R

(°C/W)

These relationship of these four factors is expressed by equation (1): T = T + P X R

J A D

QJA

Maximum ambient temperature and power dissipation are determined by the design while the maximum

junction temperature and thermal resistance depend on the manufacturer and the package type.

1...5 6 789 10 11...13

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