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Details, datasheet, quote on part number:LM117A
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| Part: | LM117A |
| Category: | Power Management => Regulators => Linear Voltage Regulators => Positive => Adjustable |
| Description: | LM117 - 3-Terminal Adjustable Regulator, Package: TO-39, Pin Nb=3 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM117A datasheet File size : 754 kB |
| Request For quote: | Find where to buy LM117A
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Datasheet text preview:
LM117/LM317A/LM317 3-Terminal Adjustable Regulator
May 2003
LM117/LM317A/LM317 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 IC's. 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
n n n n n n n n n 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
Typical Applications
1.2V 25V Adjustable Regulator
LM117 Series Packages Part Number Suffix K H T E S EMP MDT
00906301
Design Package TO-3 TO-39 TO-220 LCC TO-263 SOT-223 TO-252 Load Current 1.5A 0.5A 1.5A 0.5A 1.5A 1A 0.5A
Full output current not available at high input-output voltages
*Needed if device is more than 6 inches from filter capacitors.
Optional -- improves transient response. Output capacitors in the range of 1µF to 1000µF of aluminum or tantalum electrolytic are commonly used to provide improved output impedance and rejection of transients.
SOT-223 vs. D-Pak (TO-252) Packages
00906354
Scale 1:1
© 2003 National Semiconductor Corporation
DS009063
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LM117/LM317A/LM317
Connection Diagrams
(TO-3) Metal Can Package (TO-39) Metal Can Package
00906331
CASE IS OUTPUT
00906330
CASE IS OUTPUT
Bottom View NS Package Number H03A
Bottom View Steel Package NS Package Number K02A or K02C (TO-263) Surface-Mount Package (TO-220) Plastic Package
00906335
Top View
00906332
Front View NS Package Number T03B Ceramic Leadless Chip Carrier
00906336
Side View NS Package Number TS3B
00906334
Top View NS Package Number E20A
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LM117/LM317A/LM317
Connection Diagrams
(Continued) TO-252 (D-Pak)
4-Lead SOT-223
00906359
Front View NS Package Number MP04A
00906366
Front View NS Package Number TD03B
Ordering Information
Package Metal Can (TO-3) Metal Can (TO-39) Temperature Range -55°C TJ +150°C 0°C TJ +125°C -55°C TJ +150°C -55°C TJ +150°C -55°C TJ +150°C -40°C TJ +125°C 0°C TJ +125°C TO-220 3- Lead TO-263 3- Lead LCC SOT-223 4- Lead -40°C TJ +125°C 0°C TJ +125°C 0°C TJ +125°C -55°C TJ +150°C 0°C TJ +125°C -40°C TJ +125°C D- Pack 3- Lead 0°C TJ +125°C -40°C TJ +125°C Part Number LM117K STEEL LM317K STEEL LM117K/883 LM117H LM117H/883 LM317AH LM317H LM317AT LM317T LM317S LM317SX LM117E/883 LM317EMP LM317EMPX LM317AEMP LM317AEMPX LM317MDT LM317MDTX LM317AMDT LM317AMDTX LM317AMDT LM317MDT N07A LM117E/883 N01A Package Marking LM117K STEEL P+ LM317K STEEL P+ LM117K/883 LM117H P+ LM117H/883 LM317AH P+ LM317H P+ LM317AT P+ LM317T P+ LM317S P+ Transport Media 50 Per Bag 50 Per Bag 50 Per Bag 500 Per Box 20 Per Tray 500 Per Box 500 Per Box 45 Units/Rail 45 Units/Rail 45 Units/Rail 500 Units Tape and Reel 50 Units/Rail 1k Units Tape and Reel 2k Units Tape and Reel 1k Units Tape and Reel 2k Units Tape and Reel 75 Units/Rail 2.5k Units Tape and Reel 75 Units/Rail 2.5k Units Tape and Reel TD03B E20A MP04A TS3B T03B K02C H03A NSC Drawing K02A
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LM117/LM317A/LM317
Absolute Maximum Ratings
(Note 1)
ESD Tolerance (Note 5)
3 kV
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation Input-Output Voltage Differential Storage Temperature Lead Temperature Metal Package (Soldering, 10 seconds) Plastic Package (Soldering, 4 seconds) 300°C 260°C Internally Limited +40V, -0.3V -65°C to +150°C
Operating Temperature Range
LM117 LM317A LM317 Preconditioning Thermal Limit Burn-In All Devices 100% -55°C TJ +150°C -40°C TJ +125°C 0°C TJ +125°C
Electrical Characteristics (Note 3) Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN - VOUT = 5V, and IOUT = 10 mA.
Parameter Reference Voltage 3V (VIN - VOUT) 40V, 10 mA IOUT IMAX, P PMAX Line Regulation Load Regulation Thermal Regulation Adjustment Pin Current Adjustment Pin Current Change Temperature Stability Minimum Load Current Current Limit 10 mA IOUT IMAX 3V (VIN - VOUT) 40V TMIN TJ TMAX (VIN - VOUT) = 40V (VIN - VOUT) 15V K Package H Package (VIN - VOUT) = 40V K Package H Package RMS Output Noise, % of VOUT Ripple Rejection Ratio 10 Hz f 10 kHz VOUT = 10V, f = 120 Hz, CADJ = 0 µF VOUT = 10V, f = 120 Hz, CADJ = 10 µF Long-Term Stability Thermal Resistance, Junction-to-Case Thermal Resistance, Junctionto-Ambient (No Heat Sink) TJ = 125°C, 1000 hrs K Package H Package E Package K Package H Package E Package 35 140 0.3 2.3 12 1 3 15 % °C/W °C/W °C/W °C/W °C/W °C/W 66 80 dB 0.3 0.15 0.4 0.2 0.003 65 A A % dB 1.5 0.5 2.2 0.8 3.4 1.8 A A 1 3.5 5 % mA 3V (VIN - VOUT) 40V (Note 4) 10 mA IOUT IMAX (Note 4) 20 ms Pulse 0.01 0.02 0.1 0.3 0.03 50 0.2 0.02 0.05 0.3 1 0.07 100 5 %/V %/V % % %/W µA µA 1.20 1.25 1.30 Conditions Min LM117 (Note 2) Typ Max V V Units
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LM117/LM317A/LM317
Electrical Characteristics (Note 3)
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN - VOUT = 5V, and IOUT = 10 mA. Parameter Reference Voltage 3V (VIN - VOUT) 40V, 10 mA IOUT IMAX, P PMAX Line Regulation Load Regulation Thermal Regulation Adjustment Pin Current Adjustment Pin Current Change Temperature Stability Minimum Load Current Current Limit 10 mA IOUT IMAX 3V (VIN - VOUT) 40V TMIN TJ TMAX (VIN - VOUT) = 40V (VIN - VOUT) 15V K, T, S Packages H Package MP Package (VIN - VOUT) = 40V K, T, S Packages H Package MP Package RMS Output Noise, % of VOUT Ripple Rejection Ratio 10 Hz f 10 kHz VOUT = 10V, f = 120 Hz, CADJ = 0 µF VOUT = 10V, f = 120 Hz, CADJ = 10 µF Long-Term Stability Thermal Resistance, Junction-to-Case TJ = 125°C, 1000 hrs K Package MDT Package H Package T Package MP Package Thermal Resistance, Junction-to-Ambient (No Heat Sink) K Package MDT Package(Note 6) H Package T Package S Package (Note 6) 12 4 23.5 35 140 50 50 15 5 0.3 1 0.3 2.3 5 12 4 23.5 35 92 140 50 50 1 3 15 % °C/W °C/W °C/W °C/W °C/W °C/W °C/W °C/W °C/W °C/W 66 80 66 80 dB 0.15 0.075 0.55 0.4 0.2 0.4 0.003 65 0.15 0.075 0.15 0.4 0.2 0.4 0.003 65 A A A % dB 1.5 0.5 1.5 2.2 0.8 2.2 3.4 1.8 3.4 1.5 0.5 1.5 2.2 0.8 2.2 3.4 1.8 3.4 A A A 1 3.5 10 1 3.5 10 % mA 3V (VIN - VOUT) 40V (Note 4) 10 mA IOUT IMAX (Note 4) 20 ms Pulse 0.005 0.01 0.1 0.3 0.04 50 0.2 0.01 0.02 0.5 1 0.07 100 5 0.01 0.02 0.1 0.3 0.04 50 0.2 0.04 0.07 0.5 1.5 0.07 100 5 %/V %/V % % %/W µA µA Conditions Min 1.238 1.225 LM317A Typ 1.250 1.250 Max 1.262 1.270 1.20 1.25 1.30 Min LM317 Typ Max V V Units
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Note 2: Refer to RETS117H drawing for the LM117H, or the RETS117K for the LM117K military specifications. Note 3: Although power dissipation is internally limited, these specifications are applicable for maximum power dissipations of 2W for the TO-39 and SOT-223 and 20W for the TO-3, TO-220, and TO-263. IMAX is 1.5A for the TO-3, TO-220, and TO-263 packages, 0.5A for the TO-39 package and 1A for the SOT-223 Package. All limits (i.e., the numbers in the Min. and Max. columns) are guaranteed to National's AOQL (Average Outgoing Quality Level). Note 4: Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specifications for thermal regulation. Note 5: Human body model, 100 pF discharged through a 1.5 k resistor. Note 6: If the TO-263 or TO-252 packages are used, the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the package. Using 0.5 square inches of copper area. JA is 50°C/W; with 1 square inch of copper area, JA is 37°C/W; and with 1.6 or more square inches of copper area, JA is 32°C/W. If the SOT-223 package is used, the thermal resistance can be reduced by increasing the PC board copper area (see applications hints for heatsinking).
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