DataSheet.jp

GS78L12NF の電気的特性と機能

GS78L12NFのメーカーはGlobaltechです、この部品の機能は「3-Terminal Positive Voltage Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 GS78L12NF
部品説明 3-Terminal Positive Voltage Regulator
メーカ Globaltech
ロゴ Globaltech ロゴ 




このページの下部にプレビューとGS78L12NFダウンロード(pdfファイル)リンクがあります。
Total 10 pages

No Preview Available !

GS78L12NF Datasheet, GS78L12NF PDF,ピン配置, 機能
3-Terminal Positive Voltage Regulator
DEC. 2009
Product Description
The GS78Lxx Series of positive voltage regulators
are inexpensive, easy-to-use devices suitable for a
multitude of applications that require a regulated
supply of up to 100mA. Like their higher-powered
GS78xx Series cousins, these regulators feature
internal current limiting and thermal shutdown
making them remarkably rugged. No external
components are required with the GS78Lxx
devices in many applications.
These devices offer a substantial performance
advantage over the traditional zener diode-resistor
combination, as output impedance and quiescent
current are substantially reduced.
Features
Wide Range of Available, Fixed Output
Voltages
Internal Short Circuit Current Limiting
Internal Thermal Overload Protection
No External Components Required
Complementary Negative Regulators
Offered (GS79Lxx Series)
Available in ±5% Accuracy
RoHS and Halogen Free Compliant and
100% Lead(Pb)-Free
Applications
Battery Powered Systems
Portable Consumer Equipment
Portable Computer
Radio Control Systems
Logic Systems
Power Adapter
Representative Schematic Diagram
15k
Q1
3.8K
Q3
Q4 Q6
Q5
Q10
1.2K
Z1 Q2
420
1.9k 19k 2.2K
C Q9
Q8
Q7
1.0K
Q11 Input
Q12
5.0K 3.0
Output
0-25K
2.85K
Ground
www.gs-power.com 1
Free Datasheet http://www.nDatasheet.com

1 Page





GS78L12NF pdf, ピン配列
Absolute Maximum Ratings
TA=+125ºC, unless otherwise noted.)
Symbol
VIN
Input Voltage
Parameter
PD Power Dissipation
θJA
TJ
TSTG
The Junction-To-Ambient Thermal Resistance
Operating Junction Temperature Range
Storage Temperature Range
Maximum
25
SOT-89
0.5
SOP-8
0.625
TO-92
0.5
SOT-89
200
SOP-8
160
TO-92
200
-20 to +120
-65 to +150
Unit
V
W
ºC/w
ºC
ºC
GS78L05 Electrical Characteristics
(VIN=10V, IOUT=40mA, CIN=0.33µ F, COUT=0.1µ F, 0ºC <TJ<+125ºC, unless otherwise noted.)
Symbol
Parameter
Test Conditions
Min Typ
VOUT
RegLINE
RegLOAD
VOUT
IB
IB
Output Voltage
Line Regulation
Load Regulation
Output Voltage
Input Bias
Current
Input Bias
Current Change
TJ=+25ºC
TJ=+25ºC, IOUT =40mA
7.0V VIN 20V,8.0V VIN 20V
TJ=+25ºC, 1.0mA IOUT 100mA
TJ=+25ºC, 1.0mA IOUT 40mA
7.0V VIN 20V,
1.0mA IOUT 40mA
VIN =10V, 1.0mA IOUT 70mA
TJ=+25ºC
TJ=+125ºC
8.0V VI 20V
1.0mA Io 40mA
4.8
--
--
--
--
4.75
4.75
--
--
--
--
5.0
55
45
11
5.0
--
--
3.8
--
--
--
VN
Output Noise
Voltage
TA=+25ºC, 10Hz f 100kHz
-- 40
RR
VIN-VOUT
Ripple Rejection
Dropout Voltage
IOUT=40mA, f=120Hz,
8.0V VIN 18V, TJ=+25ºC
TJ=+25ºC
41 49
-- 1.7
Max
5.2
150
100
60
30
5.25
5.25
6.0
5.5
1.5
0.1
--
Unit
V
mV
mV
mV
mV
V
mA
mA
µV
-- dB
-- V
www.gs-power.com 3
Free Datasheet http://www.nDatasheet.com


3Pages


GS78L12NF 電子部品, 半導体
Typical Applications
Input
GS78LXX
Output
Cin*
0.33uF
Cout*
A common ground is required between the input and the output voltages.
* CIN is required if regulator is located an appreciable distance form power supply filter.
**COUT is not needed for stability, however, it does improve transient response.
Design Considerations
The GS78LXX Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down
the circuit when subjected to an excessive power overload condition. Internal Short Circuit Protection Limits the
maximum current the circuit will pass.
In many low current applications, compensation capacitors are not required. However, it is recommended that the
regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire
lengths, or if the output load capacitance is large. The input bypass capacitor should be selected to provide good
high-frequency characteristics to insure stable operation under all load conditions. A 0.33 µF or larger tantalum,
mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass
capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Good
construction techniques should be used to minimize ground loops and lead resistance drops since the regulator
has no external sense lead. Bypassing the output is also recommended.
Current Regulator
The GS78LXX regulators can also be used as a current source when connected as above. In order to minimize
dissipation the GS78L05 is chosen in this application. Resistor R determines the current as follows:
5.0V
Iout =
+ IB
R
IB=3.8mA over line and load changes
For example, a 100mA current source would require R to be a 50, 1/2 W resistor and the output voltage
compliance would be the input voltage less 7V.
Input GS78L05
0.33uF
R
Constant
Current to
Grounded Load
Iout
Positive and Negative Regulator
+Vi
0.33uF
-Vi
0.33uF
GS78LXX
0.1 uF
0.1 uF
GS79LXX
+Vo
-Vo
www.gs-power.com 6
Free Datasheet http://www.nDatasheet.com

6 Page



ページ 合計 : 10 ページ
 
PDF
ダウンロード
[ GS78L12NF データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
GS78L12NF

3-Terminal Positive Voltage Regulator

Globaltech
Globaltech


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap