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LM317A

  

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Texas-Instruments
Texas Instruments
LM317A Accurate Three-Terminal Adjustable Regulator

Description
The LM317A adjustable 3-terminal, positive-voltage regulators are capable of supplying current in excess of 1.5 A over a 1.25-V to 37-V output range and provide 1% output-voltage accuracy. The LM317A device is available in an SOT-223 package, which makes it ideal for space-constrained applications that require high-performance regulation. The device is exceptionally easy to use and requires only two external resistors to set the output voltage. Both line regulation and load regulation are better achieved with the LM317A device than with standard fixed regulators.

Features
• Typical 0.005%/V Line Regulation
• 1% Output Voltage Tolerance
• 1.5-A Output Current
• Adjustable Output Down to 1.25 V
• Current Limit Constant with Temperature
• 80-dB Ripple Rejection
• Short-Circuit Protected Output
• −40°C to 125°C Operating Temperature Range

Applications
• Automotive LED Lighting
• Battery Chargers
• Post Regulation for Switching Supplies
• Constant-Current Regulator
• Microprocessor Supplies

 


other parts : LM317AEMP  LM317AEMP/NOPB  LM317AEMPX  LM317AEMPX/NOPB  LM317AH  LM317AH/NOPB  LM317AMDT  LM317AMDT/NOPB  LM317AMDTX  LM317AMDTX/NOPB  
LM317A PDF
UTC
Unisonic Technologies
LM317A MEDIUM CURRENT 1.2V TO 37V ADJUSTABLE VOLTAGE REGULATOR

DESCRIPTION
The UTC LM317Ais an adjustable 3-terminal positive voltage regulator, designed to supply 1.5A of output current with voltage adjustable from 1.2V ~ 37V.

FEATURES
* Output voltage adjustable from 1.2V ~ 37V
* Output current in excess of 1.5A
* Internal thermal overload protection
* Internal short circuit current limiting
* Output transistor safe area compensation


other parts : LM317AG-AA3-R  LM317AG-TA3-T  LM317AG-TN3-R  LM317AG-TQ2-R  LM317AG-TQ2-T  LM317AL-AA3-R  LM317AL-TA3-T  LM317AL-TN3-R  LM317AL-TQ2-R  LM317AL-TQ2-T  
LM317A PDF
Linear
Linear Technology
LM317A Positive Adjustable Regulator


other parts : LM117  LM117A  LM317  LM317AT  LT117  LT117A  LT317  LT317A  LT317AT  LM317T  
LM317A PDF
Texas-Instruments
Texas Instruments
LM317AT Accurate Three-Terminal Adjustable Regulator

Description
The LM317A adjustable 3-terminal, positive-voltage regulators are capable of supplying current in excess of 1.5 A over a 1.25-V to 37-V output range and provide 1% output-voltage accuracy. The LM317A device is available in an SOT-223 package, which makes it ideal for space-constrained applications that require high-performance regulation. The device is exceptionally easy to use and requires only two external resistors to set the output voltage. Both line regulation and load regulation are better achieved with the LM317A device than with standard fixed regulators.

Features
• Typical 0.005%/V Line Regulation
• 1% Output Voltage Tolerance
• 1.5-A Output Current
• Adjustable Output Down to 1.25 V
• Current Limit Constant with Temperature
• 80-dB Ripple Rejection
• Short-Circuit Protected Output
• −40°C to 125°C Operating Temperature Range

Applications
• Automotive LED Lighting
• Battery Chargers
• Post Regulation for Switching Supplies
• Constant-Current Regulator
• Microprocessor Supplies

 


other parts : LM317A  LM317AEMP  LM317AEMP/NOPB  LM317AEMPX  LM317AEMPX/NOPB  LM317AH  LM317AH/NOPB  LM317AMDT  LM317AMDT/NOPB  LM317AMDTX  
LM317AT PDF
Texas-Instruments
Texas Instruments
LM317AH Accurate Three-Terminal Adjustable Regulator

Description
The LM317A adjustable 3-terminal, positive-voltage regulators are capable of supplying current in excess of 1.5 A over a 1.25-V to 37-V output range and provide 1% output-voltage accuracy. The LM317A device is available in an SOT-223 package, which makes it ideal for space-constrained applications that require high-performance regulation. The device is exceptionally easy to use and requires only two external resistors to set the output voltage. Both line regulation and load regulation are better achieved with the LM317A device than with standard fixed regulators.

Features
• Typical 0.005%/V Line Regulation
• 1% Output Voltage Tolerance
• 1.5-A Output Current
• Adjustable Output Down to 1.25 V
• Current Limit Constant with Temperature
• 80-dB Ripple Rejection
• Short-Circuit Protected Output
• −40°C to 125°C Operating Temperature Range

Applications
• Automotive LED Lighting
• Battery Chargers
• Post Regulation for Switching Supplies
• Constant-Current Regulator
• Microprocessor Supplies

 


other parts : LM317A  LM317AEMP  LM317AEMP/NOPB  LM317AEMPX  LM317AEMPX/NOPB  LM317AH/NOPB  LM317AMDT  LM317AMDT/NOPB  LM317AMDTX  LM317AMDTX/NOPB  
LM317AH PDF
National-Semiconductor
National ->Texas Instruments
LM317AT 3-Terminal Adjustable Regulator

General Description
The LM117 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM117 is packaged in standard transistor packages which are easily mounted and handled.
In addition to higher performance than fixed regulators, the LM117 series offers full overload protection available only in ICs. 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 LM117 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, i.e., avoid short-circuiting the output.
Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a
fixed resistor between the adjustment pin and output, the LM117 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.
For applications requiring greater output current, see LM150 series (3A) and LM138 series (5A) data sheets. For the negative complement, see LM137 series data sheet.

Features
■ Guaranteed 1% output voltage tolerance (LM317A)
■ Guaranteed max. 0.01%/V line regulation (LM317A)
■ Guaranteed max. 0.3% load regulation (LM117)
■ Guaranteed 1.5A output current
■ Adjustable output down to 1.2V
■ Current limit constant with temperature
■ P+ Product Enhancement tested
■ 80 dB ripple rejection
■ Output is short-circuit protected


other parts : LM117E/883  LM117H  LM117H/883  LM117HP  LM117K/883  LM117KSTEEL  LM117KSTEELP  LM317AEMP  LM317AEMPX  LM317AH  
LM317AT PDF
Linear
Linear Technology
LM317AT Positive Adjustable Regulator


other parts : LM117  LM117A  LM317  LM317A  LT117  LT117A  LT317  LT317A  LT317AT  LM317T  
LM317AT PDF
National-Semiconductor
National ->Texas Instruments
LM317AH 3-Terminal Adjustable Regulator

General Description
The LM117 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM117 is packaged in standard transistor packages which are easily mounted and handled.
In addition to higher performance than fixed regulators, the LM117 series offers full overload protection available only in ICs. 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 LM117 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, i.e., avoid short-circuiting the output.
Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a
fixed resistor between the adjustment pin and output, the LM117 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.
For applications requiring greater output current, see LM150 series (3A) and LM138 series (5A) data sheets. For the negative complement, see LM137 series data sheet.

Features
■ Guaranteed 1% output voltage tolerance (LM317A)
■ Guaranteed max. 0.01%/V line regulation (LM317A)
■ Guaranteed max. 0.3% load regulation (LM117)
■ Guaranteed 1.5A output current
■ Adjustable output down to 1.2V
■ Current limit constant with temperature
■ P+ Product Enhancement tested
■ 80 dB ripple rejection
■ Output is short-circuit protected


other parts : LM117E/883  LM117H  LM117H/883  LM117HP  LM117K/883  LM117KSTEEL  LM117KSTEELP  LM317AEMP  LM317AEMPX  LM317AHP  
LM317AH PDF
SEME-LAB
Semelab - > TT Electronics plc
LM317AK POSITIVE ADJUSTABLE VOLTAGE REGULATOR

DESCRIPTION
The 117/317 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of 1.5A over an output voltage range of 1.25V to 40V (HV Series, 60V). The regulators are exceptionally easy to apply requiring only 2 external resistors to set the output voltage.
Every effort has been made to make these devices easy to use and difficult to damage. Internal current limiting and power limiting coupled with true thermal limiting prevents damage due to overloads or shorts, even if the regulators are not fastened to a heat sink.

FEATURES
• 1.5A Output Current Guaranteed
• Internal Thermal Overload Protection
• Output Short Circuit Protected
• Hermetic Metal TO3 Package
• Screening Options Available

APPLICATIONS
• Adjustable Power Supplies
• System Power Supplies
• Precision Voltage / Current Regulators

 


other parts : IP117AHVK  IP117AK  IP117HVK  IP117K  IP317AHVK  IP317AK  IP317HVK  IP317K  LM117AHVK  LM117AK  
LM317AK PDF
Semelab
Semelab - > TT Electronics plc
LM317AK POSITIVE ADJUSTABLE VOLTAGE REGULATOR

DESCRIPTION
The 117/317 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of 1.5A over an output voltage range of 1.25V to 40V (HV Series, 60V). The regulators are exceptionally easy to apply requiring only 2 external resistors to set the output voltage.

FEATURES
•  1.5A Output Current Guaranteed
•  Internal Thermal Overload Protection
•  Output Short Circuit Protected
•  Hermetic Metal TO3 Package
•  Screening Options Available


other parts : LM317AHVK  
LM317AK PDF
National-Semiconductor
National ->Texas Instruments
LM317AHP 3-Terminal Adjustable Regulator

General Description
The LM117 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM117 is packaged in standard transistor packages which are easily mounted and handled.
In addition to higher performance than fixed regulators, the LM117 series offers full overload protection available only in ICs. 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 LM117 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, i.e., avoid short-circuiting the output.
Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a
fixed resistor between the adjustment pin and output, the LM117 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.
For applications requiring greater output current, see LM150 series (3A) and LM138 series (5A) data sheets. For the negative complement, see LM137 series data sheet.

Features
■ Guaranteed 1% output voltage tolerance (LM317A)
■ Guaranteed max. 0.01%/V line regulation (LM317A)
■ Guaranteed max. 0.3% load regulation (LM117)
■ Guaranteed 1.5A output current
■ Adjustable output down to 1.2V
■ Current limit constant with temperature
■ P+ Product Enhancement tested
■ 80 dB ripple rejection
■ Output is short-circuit protected


other parts : LM117E/883  LM117H  LM117H/883  LM117HP  LM117K/883  LM117KSTEEL  LM117KSTEELP  LM317AEMP  LM317AEMPX  LM317AH  
LM317AHP PDF
National-Semiconductor
National ->Texas Instruments
LM317ATP 3-Terminal Adjustable Regulator

General Description
The LM117 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM117 is packaged in standard transistor packages which are easily mounted and handled.
In addition to higher performance than fixed regulators, the LM117 series offers full overload protection available only in ICs. 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 LM117 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, i.e., avoid short-circuiting the output.
Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a
fixed resistor between the adjustment pin and output, the LM117 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.
For applications requiring greater output current, see LM150 series (3A) and LM138 series (5A) data sheets. For the negative complement, see LM137 series data sheet.

Features
■ Guaranteed 1% output voltage tolerance (LM317A)
■ Guaranteed max. 0.01%/V line regulation (LM317A)
■ Guaranteed max. 0.3% load regulation (LM117)
■ Guaranteed 1.5A output current
■ Adjustable output down to 1.2V
■ Current limit constant with temperature
■ P+ Product Enhancement tested
■ 80 dB ripple rejection
■ Output is short-circuit protected


other parts : LM117E/883  LM117H  LM117H/883  LM117HP  LM117K/883  LM117KSTEEL  LM117KSTEELP  LM317AEMP  LM317AEMPX  LM317AH  
LM317ATP PDF

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