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AS117 Dataheets PDF



Part Number AS117
Manufacturers Micross Components
Logo Micross Components
Description POS Adj Voltage Regulator
Datasheet AS117 DatasheetAS117 Datasheet (PDF)

PRELIMINARY SPECIFICATION POS Adj Voltage Regulator AS117 RAD-TOL PIN ASSIGNMENT (Top View) Positive Adjustable Voltage Regulator AVAILABLE AS MILITARY / SPACE SPECIFICATIONS • SMD 5962-99517 pending • Radiation Tolerant • MIL-STD-883, 1.2.1 “QML” pending 16 Pin CerPack Gullwing(GW16) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 N/C N/C N/C N/C N/C OUTPUT/ SENSE OUTPUT N/C N/C N/C FEATURES • Guaranteed 0.5A Output Current • Radiation Guaranteed to 100K RADS TID • Adjustable output down to 1.2V •.

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PRELIMINARY SPECIFICATION POS Adj Voltage Regulator AS117 RAD-TOL PIN ASSIGNMENT (Top View) Positive Adjustable Voltage Regulator AVAILABLE AS MILITARY / SPACE SPECIFICATIONS • SMD 5962-99517 pending • Radiation Tolerant • MIL-STD-883, 1.2.1 “QML” pending 16 Pin CerPack Gullwing(GW16) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 N/C N/C N/C N/C N/C OUTPUT/ SENSE OUTPUT N/C N/C N/C FEATURES • Guaranteed 0.5A Output Current • Radiation Guaranteed to 100K RADS TID • Adjustable output down to 1.2V • Current Limit constant over temperature • Output is short circuit protected • 80Db Ripple Rejection ADJ N/C INPUT N/C N/C N/C 3 Lead Metal Can (TO39) OPTIONS • Packages 16 pin Cerpack Gullwing 3 Lead Metal Can 2 Lead Metal Can MARKINGS GW16 TO39 TO3 TO-257 (Bottom View) 1 INPUT OUTPUT 3 2 ADJUSTMENT • Process / Temperature Ranges MILITARY (-55oC to +125oC) MIL-STD-883 paragraph 1.2.1 MIL-STD-883 CLASS ‘S’ /XT /883 /SPACE 2 Lead Metal Can (TO3) (Bottom View) Adjustment VIN GENERAL DESCRIPTION The AS117 is an adjustable 3-terminal positive voltage regulator capable of supplying in excess of .5A over a 1.2V to 37V output voltage range. It is exceptionally easy to use & requires only 2 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 AS117 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. The AS117 is radiation tolerant to 100K Rads(Si) total dose levels as tested by MIL-STD-883 Method 1019 Condition A. The user is encouraged to contact Micross for a copy of current radiation testing reports. For more products and information please visit our web site at www.micross.com AS117 RAD-TOL Rev. 1.6 01/10 Micross Components reserves the right to change products or specifications without notice. 1 PRELIMINARY SPECIFICATION POS Adj Voltage Regulator AS117 RAD-TOL TYPICAL APPLICATIONS Besides replacing fixed regulators, the AS117 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 & the output pin, the AS117 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. 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. AS117 RAD-TOL Rev. 1.6 01/10 Micross Components reserves the right to change products or specifications without notice. 2 PRELIMINARY SPECIFICATION POS Adj Voltage Regulator AS117 RAD-TOL TYPICAL APPLICATIONS (CONTINUED)3 Typical Applications (Continued) High Current Adjustable Regulator 0 ‡ Optional — improves ripple rejection †Solid tantalum *Minimum load current = 30 mA 0 to 30V Regulator Power Follower 0 Full output current not available at high input-output voltages AS117 RAD-TOL Rev. 1.6 01/10 Micross Components reserves the right to change products or specifications without notice. 3 PRELIMINARY SPECIFICATION POS Adj Voltage Regulator AS117 RAD-TOL ABSOLUTE MAXIMUM RATINGS(note 1) Operating Temperature Range ................ -55C < Ta < +125C Maximum Junction Temperature ................................. +150C Storage Temperature Range ................... -65C < Ta < +150C Lead Temperature (soldering for 10 sec) ....................... 300C Input to Output Voltage Differential ....................+40V, -0.3V Power Dissipation .................................... Internally Limited Output Short Circuit Duration........................................10 sec Lead Temperature (Soldering, 10 sec)...........................300°C Thermal Resistance: Theta JA TO-03 Metal Can .........still air............186C/W .......500LF/min air flow...... 64C/W Theta JA 16Lead Gullwing ....still air............... 115C/W .......500LF/min air flow....... 66C/W Theta JC TO-03 Metal Can .....still air.............. 21C/W Theta JC 16Lead Gullwing .....still air............... 3.4C/W -(see note 3) Package Weight: 16 Lead Cerpack Gullwing ................................ 380mg 3 Lead Metal Can ...........


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