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參數(shù)資料
| 型號： | GM6250-4.5T92RL |
| 廠商： | American Power Management Inc. |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 250mA ULTRA-LOW DROPOUT POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 250mA的超低壓差正電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 146K |
| 代理商： | GM6250-4.5T92RL |
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 )
IN
of at least 1F.
With a large output current, operations can be stabilised by increasing capacitor size (C ). If C
is
IN
small and capacitor size (C ) is increased, there is a possibility of oscillation due to input impedance.
L
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
IN
OUT
stipulated continuous total power dissipation value (Pd) for the package.
GM6250
VIN
VO
VSS
VIN
Open
Circuit 1
TEST CIRCUIT
Circuit 2
GM6250
VIN
VO
VSS
+
VIN
R
L
1F
(Tantalum)
1F
(Tantalum)
V
A
G
M
6
2
5
0
8
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)
A
2. Power Dissipation P (Watts)
D
3. Maximum Junction Temperature T (°C)
J
4. Thermal Resistance Junction to ambient R
(°C/W)
JA
Q
These relationship of these four factors is expressed by equation (1):
T = T + P X R
JAD
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.
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| GM6250-5.0ST23R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:250mA ULTRA-LOW DROPOUT POSITIVE VOLTAGE REGULATOR |
| GM6250-5.0ST23RG | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:300mA ULTRA LOW DROPOUT POSITIVE VOLTAGE REGULATOR |
| GM6250-5.0ST89R | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:300mA ULTRA LOW DROPOUT POSITIVE VOLTAGE REGULATOR |
| GM6250-5.0ST89RG | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:300mA ULTRA LOW DROPOUT POSITIVE VOLTAGE REGULATOR |
| GM6250-5.0T92B | 制造商:GAMMA 制造商全稱:GAMMA 功能描述:250mA ULTRA-LOW DROPOUT POSITIVE VOLTAGE REGULATOR |
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