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LM317BD2T Datasheet

  • LM317BD2T

  • 1.5 A Adjustable Output, Positive Voltage Regulator

  • 125.55KB

  • 12頁

  • ONSEMI

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ON Semiconductort
1.5 A Adjustable Output,
Positive Voltage Regulator
The LM317 is an adjustable 3鈥搕erminal positive voltage regulator
capable of supplying in excess of 1.5 A over an output voltage range of
1.2 V to 37 V. This voltage regulator is exceptionally easy to use and
requires only two external resistors to set the output voltage. Further, it
employs internal current limiting, thermal shutdown and safe area
compensation, making it essentially blow鈥搊ut proof.
The LM317 serves a wide variety of applications including local, on
card regulation. This device can also be used to make a programmable
output regulator, or by connecting a fixed resistor between the
adjustment and output, the LM317 can be used as a precision current
regulator.
鈥?/div>
Output Current in Excess of 1.5 A
鈥?/div>
Output Adjustable between 1.2 V and 37 V
鈥?/div>
Internal Thermal Overload Protection
鈥?/div>
Internal Short Circuit Current Limiting Constant with Temperature
鈥?/div>
Output Transistor Safe鈥揂rea Compensation
鈥?/div>
Floating Operation for High Voltage Applications
鈥?/div>
Available in Surface Mount D
2
PAK, and Standard 3鈥揕ead Transistor
Package
鈥?/div>
Eliminates Stocking many Fixed Voltages
LM317
THREE鈥揟ERMINAL
ADJUSTABLE POSITIVE
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
1
2
3
Pin 1. Adjust
2. V
out
3. V
in
Standard Application
V
in
LM317
V
out
R
1
240
Adjust
+ C **
O
1.0
碌F
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D
2
PAK)
1
2
3
I
Adj
C
in
*
0.1
碌F
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
R
2
ORDERING INFORMATION
Device
LM317BD2T
**
C
in
is required if regulator is located an appreciable distance from power supply filter.
** C
O
is not needed for stability, however, it does improve transient response.
V out
+
1.25 V 1
)
R2
R1
)
I
R
Adj 2
LM317BT
LM317D2T
LM317T
T
J
= 0擄 to +125擄C
Operating
Temperature Range
T
J
= 鈥?0擄 to +125擄C
Package
Surface Mount
Insertion Mount
Surface Mount
Insertion Mount
Since I
Adj
is controlled to less than 100
碌A(chǔ),
the error associated with this term is
negligible in most applications.
漏
Semiconductor Components Industries, LLC, 2002
1
January, 2002 鈥?Rev. 3
Publication Order Number:
LM317/D

LM317BD2T 產(chǎn)品屬性

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性

  • -

  • 正，可調(diào)式

  • 1.2 V ~ 37 V

  • 最高 40 V

  • -

  • 1

  • 500mA

  • -40°C ~ 125°C

  • 表面貼裝

  • TO-263-3，D²Pak（2 引線+接片），TO-263AB

  • D2PAK

  • 管件

  • LM317BD2TOS

LM317BD2T相關(guān)型號PDF文件下載

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