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LM317L 的PDF资料 下载 ,250.1K

LM317L 的货源和报价 LM317L 的相关技术信息

相关型号

LM308 LM311 LM317 LM317K LM317T LM317T(NS) LM318 LM319

LM317L - 3-Terminal Adjustable Regulator

Features • Adjustable output down to 1.2V • Guaranteed 100mA output current • Line regulation typically 0.01%V • Load regulation typically 0.1% • Current limit constant with temperature • Eliminates the need to stock many voltages • Standard 3-lead transistor package • 80dB ripple rejection • Available in TO-92, SO-8, or 6-Bump micro SMD package • Output is short circuit protected • See AN-1112 for micro SMD considerations General Description The LM317L is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V to 37V output range. More...

Typical Application *click for larger image Typical Performance click for larger image

Also Recommended LM317 1.5A Version LM317HV 60V Version LM5008 350mA 100V High-Efficiency Regulator LM337L Negative Output Version Additional Resources Online Seminars The Use and Abuse of Amplifiers Application Notes (see below) Connection Diagram *click for larger image

Part Number

Package

Factory Lead Time

Models

Samples & Electronic Orders

Budgetary Pricing

Std Pack Size

Package Marking Format

Type

Pins

Spec.

MSL Rating

Peak Reflow

RoHS Report

Weeks

Qty

Qty

$US each

LM317LIBP

MICRO SMD

6

STD

1

260

RoHS

Full production

N/A

1K+

$0.28

reel of 250

XV I

6 weeks

2000

LM317LIBPX

MICRO SMD

6

STD

1

260

RoHS

Full production

N/A

1K+

$0.28

reel of 3000

XV I

6 weeks

7500

LM317LM

SOIC NARROW

8

STD NOPB

1 1

235 260

RoHS

Full production

N/A

1K+

$0.25

rail of 95

NSZXTT LM317 LM

6 weeks

15000

LM317LMX

SOIC NARROW

8

STD NOPB

1 1

235 260

RoHS

Full production

N/A

1K+

$0.25

reel of 2500

NSZXTT LM317 LM

6 weeks

50000

LM317LITP

MICRO SMD

6

NOPB

1

260

RoHS

Full production

N/A

1K+

$0.29

reel of 250

XVP I 1

N/A

N/A

LM317LITPX

MICRO SMD

6

NOPB

1

260

RoHS

Full production

N/A

1K+

$0.29

reel of 3000

XVP I 1

N/A

N/A

LM317LZ

TO-92

3

STD NOPB

1 1

NA NA

RoHS

Full production

N/A

1K+

$0.22

box of 1800

NSXYTT LM317 LZ

6 weeks

75000

LM317L MDA

Unpackaged Die

Full production

N/A

CALL

tray of N/A

-

N/A

5000

LM317L MWA

Wafer

Full production

N/A

CALL

wafer jar of N/A

-

N/A

10000

General Description

The LM317L is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V to 37V output range. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM317L is available packaged in a standard TO-92 transistor package which is easy to use.

In addition to higher performance than fixed regulators, the LM317L offers full overload protection. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.

Normally, no capacitors are needed unless the device is situated more than 6 inches 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 adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Besides replacing fixed regulators, the LM317L is useful in a wide variety of other applications. Since the regulator is "floating" and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded.

Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317L can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground which programs the output to 1.2V where most loads draw little current.

The LM317L is available in a standard TO-92 transistor package, the SO-8 package, and 6-Bump micro SMD package. The LM317L is rated for operation over a -25°C to 125°C range.

Application Notes

Title	Size in Kbytes	Date
AN-1148: Application Note 1148 Linear Regulators: Theory of Operation and Compensation	200 Kbytes	25-Sep-02	View Online	Download	Receive via Email
AN-1148 (Japanese): Application Note 1148 Linear Regulators: Theory of Operation and Compensation	216 Kbytes
AN-1164: Application Note 1164 LM3647 Reference Design User's Manual	197 Kbytes	9-Mar-01	View Online	Download	Receive via Email
AN-1165: Application Note 1165 Configuration Guide for LM3647 Reference Design	32 Kbytes	28-Sep-00	View Online	Download	Receive via Email
AN-1378: Application Note 1378 Method For Calculating Output Voltage Tolerances in Adjustable Regulators	647 Kbytes	15-Jul-05	View Online	Download	Receive via Email
AN-1378 (Chinese): Application Note 1378 Method For Calculating Output Voltage Tolerances in Adjustable Regulators	383 Kbytes
AN-181: Application Note 181 3-Terminal Regulator is Adjustable	165 Kbytes	3-Oct-02	View Online	Download	Receive via Email
AN-556: Application Note 556 Introduction to Power Supplies	159 Kbytes	25-Sep-02	View Online	Download	Receive via Email
AN-556 (Japanese): Application Note 556 Introduction to Power Supplies	171 Kbytes
LB-35: Linear Brief 35 Adjustable 3-Terminal Regulator for Low-Cost Battery Charging Systems	70 Kbytes	3-Oct-02	View Online	Download	Receive via Email
LB-46: Linear Brief 46 A New Production Technique for Trimming Voltage Regulators	71 Kbytes	3-Oct-02	View Online	Download	Receive via Email
LB-47: Linear Brief 47 High Voltage Adjustable Power Supplies	52 Kbytes	3-Oct-02	View Online	Download	Receive via Email