DataSheet26.com

LM317 PDF даташит

Спецификация LM317 изготовлена ​​​​«Wing Shing Computer Components» и имеет функцию, называемую «3-TERMINAL ADJUSTABLE REGULATORS».

Детали детали

Номер произв LM317
Описание 3-TERMINAL ADJUSTABLE REGULATORS
Производители Wing Shing Computer Components
логотип Wing Shing Computer Components логотип 

3 Pages
scroll

No Preview Available !

LM317 Даташит, Описание, Даташиты
LM317
3-TERMINAL ADJUSTABLE REGULATORS
DESCRIPTION
The LM317 are adjustable 3-terminal positive-voltage regulators capable of supplying 1.5A over
a differential voltage range of 3V to 40V. They are exceptionally easy to use and require only two
external resistors to set the output voltage. Both input and output regulation is better than
standard fixed regulators.
In addition to higher performance than fixed regulators, these regulators offer full overload
protection available only in integrated circuits. Included on the chip are current limit, thermal
overload protection, and safe-area protection. All overload protection circuit remains fully
functional even if the adjustment terminal is disconnected. Normally, no capacitors are needed
unless the device is situated far from the input filter capacitors in which case an input bypass is
needed. An optional output capacitor can be added to improve transient response.
The primary applications of each of these regulators is that of a programmable output regulator,
but by connecting a fixed resistor between adjustment terminal and the output terminal, each
device can be used as a precision current regulator. Even though the regulator is floating and
sees only the input-to-output differential voltage, use of these devices to regulate output voltages
that would cause the maximum-rated differential voltage to be exceeded if the output became
shorted is not recommended
TO-220 PACKAGE
FEATURES
! Output Voltage Range Adjustable from 1.2 V to 37V
! Output Current Capability of 1.5A Max
! Input Regulation Typically 0.01% Per Input-Volt
Change
! Output Regulation Typically 0.1%
! Peak Output Current Constant over Temperature
Range of Regulator
! Popular 3-Lead TO-220 AB Package
! Ripple Rejection Typically 80 dB
LM317T
INPUT
OUTPUT
ADJUSTMENT
A
D
I
INPUT
OUTPUT
TO-92
LM317LZ
ADJ
ABSOLUTE MAXIMUM RATINGS
Input-Output Voltage Differential VI - VO
Operating Junction Temperature Range
Continuous total dissipation at 25free-air temperature
A
O
I 40V
0to +125
2000mW
Continuous total dissipation at (or below ) 25case temperature
15W
Storage Temperature
Lead Temperature1.6 mm from case for 10 seconds
–65to +150
260
RECOMMENDED OPERATING CONDITIONS
OUTPUT CURRENT, IO
OPERATING VIRTUAL JUNCTION TEMPERATURE,TJ
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage: http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
MIN MAX UNIT
10 1500 mA
0 70









No Preview Available !

LM317 Даташит, Описание, Даташиты
LM317
3-TERMINAL ADJUSTABLE REGULATORS
ELECTRICAL CHARACTERISTICS
Uniess otherwise noted ,these specifications apply for the following test conditions: Vi-Vo=5V and Io=0.5A. For conditions
shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
PARAMETER
TEST CONDITIONS
Input Regulation*2
Ripple Rejection
Output Regulation
Output Voltage Change With Temperature
Output Voltage long-term Drift*4
Output Noise Voltage
VI-VO=3V to 40V *3
TJ=MIN to MAX
IO=10mA to 1.5A
VO=10V, f=120HZ
VO=10V, f=120HZ
10-µF capacitor between ADJ and ground
IO=10mA TO 1.5A,
TJ=25*3,
IO=10mA to 1.5A *3
VO5V
VO>5V
VO5V
VO>5V
TJ=MIN to MAX
After 1000h at TJ = MAX and VI-VO=40V
f=10Hz to 10kHz, TJ=25
Minimum Output
Regulation
Current
to
Maintain VI-VO=40V
Peak Output Current
VI-VO15V
VI-VO40V, TJ=25
Adjustment-terminal Current
Change in adjustment-terminal Current
Reference Voltage(Output to ADJ)
VI-VO=2.5V to 40V,
IO=10mA to 1.5A
VI-VO=3V to 40V, IO=10mA to 1.5A,
P15W
MIN
66
1.5
0.15
1.20
TYP MAX UNIT
0.01
0.02
0.04
0.07
%/V
65
80 dB
5
0.1
20
0.3
1
0.3
0.003
25
0.5
70
1.5
1
mV
%
mV
%
%
%
%
3.5 10 mA
2.2
0.4
A
50 100 µA
0.2 5.0 µA
1.25 1.30 V
*1 All characteristics are measured with a 0.1-µF capacitor across the input and a 1-µF capacitor across the output.
*2 Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input
*3 Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible.
Thermal effects must be taken into account separately.
*4 Since long-term drift cannot be measured on the individual devices prior to shipment. This specification is not intended to be a guarantee or warranty. It
is an engineering estimate of the average drift to be expected from lot to lot.
TYPICAL APPLICATION DATA
REG
VI
IN OUT
ADJ
R1
240
V0
See Note 3
C1=0.1 F
See Note 1
C2=1 F
R2 See Note 2
Output voltage is calculated from
VO = VREF { 1+
R2
R1
}
1. Use of an input bypass capacitor is recommended if regulator is far from filter capacitors.
2. Use of an output capacitor improves transient response but is optional.
3. VREF equals the difference between the output and adjustment terminal voltages.









No Preview Available !

LM317 Даташит, Описание, Даташиты
LM317
3-TERMINAL ADJUSTABLE REGULATORS
POSITIVE ADJUSTABLE REGULATOR
3280
240
2260
240
4265
230
1 330
240
Chip Size: 2.45X1.85mm
PAD N
1
2
3
4
PAD LOCATION LM317
PAD NAME
COORDINATES µm
XY
ADJ
2120
410
OUTPUT
1730
1490
INPUT
1120
950
OUTPUT
90
100










Скачать PDF:

[ LM317.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
LM310Voltage FollowerNational Semiconductor
National Semiconductor
LM3100LM3100 SIMPLE SWITCHER Synchronous 1MHz 1.5A Step-Down Voltage Regulator (Rev. G)Texas Instruments
Texas Instruments
LM3100Voltage RegulatorNational Semiconductor
National Semiconductor
LM3102LM3102/-Q1 SIMPLE SWITCHER Synchronous 1-MHz 2.5-A Step-Down Voltage Regulator (Rev. H)Texas Instruments
Texas Instruments

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск