The LM117 series of adjustable 3-terminal positive voltage regulators is capable of supplying either 0.5A or 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.
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 the negative complement, see LM137 series data sheet.
特性
Output is Short-Circuit Protected
5962-0423001QXC
5962-8770202RX
5962-8780201RA
5962-8876401LX
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5962-9152101MXA
5962-9756401QXA
5962-9756401QXA
AD2S80ATD/883B
AD6645ASQ/QMLQ
AD7226TQ/883B
AD7528AQ
AD7545ABQ
AD7545TQ/883B
AD7824TQ/883B
AD7828TQ/883B
AD7874SQ/883B
AD790SQ
AD9230BCPZ-250
AD9233BCPZ-125
AD9236BCPZ-80
AD9236BRUZ-80
AD9240ASZ
AD9244BSTZ-65
AD9246BCPZ-125
AD9248BSTZ-20
AD9254BCPZ-150
AD9268BCPZ-125
AD9269BCPZRL7-80
AD9361BBCZ
AD9430BSVZ-170
AD9430BSVZ-210
AD9432BSTZ-105
AD9434BCPZ-500
AD9639BCPZ-210
AD9640ABCPZ-150
AD9739BBCZ
AD976SD/883
AD976SD/883
AD9777BSVZ
AD9779ABSVZ
AD9912ABCPZ
AD9954YSVZ
AD9957BSVZ
5962-8852512YA
AT28C256-20LM/883
54FCT162244ATEB
54FCT16245ATEB
5962-8700218ZA
5962-8861011ZA
5962-9225802MXA
5962-9227102MXA
7132LA35CB
7133SA55GB
5962-8757702RA
5962-8757702RA
MD82C87H-5/883
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5962-7802006QEA
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7164S45TDB
7164S45TDB
ADC083000CIYB/NOPB
ADC10D1000CIUT/NOPB
ADC10D1500CIUT/NOPB
ADC10DV200CISQE/NOPB
ADC12D1000CIUT/NOPB
ADC12D1600CIUT/NOPB
ADC12D1800CIUT/NOPB
ADC12D1800RFIUT/NOPB
ADC12D500RFIUT/NOPB
ADC12D800RFIUT/NOPB
ADC12DJ3200AAV
ADC16DV160CILQ/NOPB
ADC32RF45IRMP
ADS4122IRGZT
ADS4149IRGZT
ADS41B49IRGZT
ADS4245IRGC25
ADS4245IRGCT
ADS4449IZCR
ADS5271IPFPT
ADS5409IZAY
ADS5424MHFG-V
ADS5444IPFPR
ADS5463MPFPEP
ADS5474IPFP
ADS54J54IRGCT
ADS5500MPAPEP
ADS5547IRGZT
ADS62P48IRGCT
ADS62P49IRGCT
ADSP-21469KBCZ-4
ADSP-2185BSTZ-133
DS26LS31MJ/883
DS26LS32MJ/883
DS9637AMJ/883
DS9638J/883
LM113-1H-QMLV
LM117HRLQMLV
LM119JRQMLV
LM119WRQMLV
LM124AJRQMLV
LM124AWG/883
LM158AJ/883
LM2941GW-QMLV
MC1558JGB
SMJ27C256-15JM
SMJ27C512-20JM
SNJ54LVC646AW
SNJ55LVDS31W
SNJ55LVDS32W
THS4304UQMLV
TIBPAL22V10AMJTB
UC1705J/883B
UC1825AL/883B
UC1875J/883B
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XC6VLX550T-1FFG1759I
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