MICROCIRCUIT DATA SHEET Original Creation Date: 06/27/95 Last Update Date: 09/18/95 Last Major Revision Date: 06/27/95 MDLM117-H REV 0A0 POSITIVE THREE TERMINAL ADJUSTABLE VOLTAGE REGULATOR General Description The LM117 adjustable 3-terminal positive voltage regulator is capable of supplying in excess of 0.5A 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. In addition to higher performance than fixed regulators, the LM117 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. Industry Part Number NS Part Numbers LM117H LM117H-SMD Prime Die LM117H Controlling Document DESC.# 7703401XA Processing Subgrp Description MIL-STD-883, Method 5004 1 2 3 4 5 6 7 8A 8B 9 10 11 Quality Conformance Inspection MIL-STD-883, Method 5005 1 Static tests at Static tests at Static tests at Dynamic tests at Dynamic tests at Dynamic tests at Functional tests at Functional tests at Functional tests at Switching tests at Switching tests at Switching tests at Temp ( oC) +25 +125 -55 +25 +125 -55 +25 +125 -55 +25 +125 -55 MICROCIRCUIT DATA SHEET MDLM117-H REV 0A0 Features - Guaranteed 0.5A output current. Adjustable output down to 1.2V. Current limit constant with temperature. 80 dB ripple rejection. Output is short-circuit protected. 2 MICROCIRCUIT DATA SHEET MDLM117-H REV 0A0 (Absolute Maximum Ratings) (Note 1) Power Dissipation Internally Limited Input-Output Voltage Differential +40V, -0.3V Maximum Junction Temperature 150 C Storage Temperature Range -65 C to +150 C Lead Temperature (Soldering, 10 seconds) 300 C Thermal Resistance ThetaJA (Still Air) (500LF/Min Air flow) 186 C/W 64 C/W ThetaJC ESD Tolerance (Note 2) 21 C/W 3kV Note 1: Note 2: 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. Human body model, 1.5K Ohms in series with 100pF. Recommended Operating Conditions Operating Temperature Range -55 C < TA < +125 C 3 MICROCIRCUIT DATA SHEET MDLM117-H REV 0A0 Electrical Characteristics DC PARAMETERS (The following conditions apply to all the following parameters, unless otherwise specified.) DC: Il = 8mA SYMBOL Vref Rline Rload PARAMETER Reference Voltage Line Regulation Load Regulation CONDITIONS NOTES PINNAME MIN MAX UNIT SUBGROUPS Vdiff = 3V 1.2 1.3 V 1 Vdiff = 40V 1.2 1.3 V 1, 2, 3 Vdiff = 3.3V 1.2 1.3 V 2, 3 3V < Vdiff < 40V, Vout = Vref -9 9 mV 1 3.3V < Vdiff < 40V, Vout = Vref -23 23 mV 2, 3 Vdiff = 3V, 10mA < Il < 500mA -15 15 mV 1 Vdiff = 40V, 10mA < Il < 150mA -15 15 mV 1 Vdiff = 3.3V, 10mA < Il < 500mA -15 15 mV 2, 3 Vdiff = 40V, 10mA < Il < 100mA -15 15 mV 2, 3 -3.1 3.1 mV 1 Vrth Thermal Regulation Vin = 14.6V, Il = 300mA, Pd = 4W, t = 20mS Iadj Adjustment Pin Current Vdiff = 3V 100 uA 1 Vdiff = 40V 100 uA 1, 2, 3 Vdiff = 3.3V 100 uA 2, 3 Delta Iadj Ilmin Icl Adjustment Pin Current Change Minimum Load Current Current Limit Vdiff = 3V, 10mA < Il < 500mA -5 5 uA 1 Vdiff = 40V, 10mA < Il < 150mA -5 5 uA 1 3V < Vdiff < 40V -5 5 uA 1 3.3V < Vdiff < 40V -5 5 uA 2, 3 Vdiff = 3.3V, 10mA < Il < 500mA -5 5 uA 2, 3 Vdiff = 40V, 10mA < Il < 100mA -5 5 uA 2, 3 Vdiff = 3V, Vout = 1.4V, (forced) 5 mA 1 Vdiff = 40V, Vout = 1.4V, (forced) 5 mA 1, 2, 3 Vdiff = 3.3V, Vout = 1.4V, (forced) 5 mA 2, 3 Vdiff = 15V .5 1.65 A 1, 2, 3 Vdiff = 40V .15 .65 A 1 dB 4, 5, 6 AC PARAMETERS (The following conditions apply to all the following parameters, unless otherwise specified.) AC: Il = 8mA Rr Ripple Rejection f = 120Hz, Cadj = 10uF, Vout = Vref 4 1 66 MICROCIRCUIT DATA SHEET MDLM117-H REV 0A0 Note 1: Group "A" sample only, test at all temp. 5 MICROCIRCUIT DATA SHEET MDLM117-H REV 0A0 Graphics and Diagrams GRAPHICS# DESCRIPTION 9784HRB1 3LD .200 DIA P.C. METAL CAN PKG (B/I CKT) H03ARD 3LD .200 DIA P.C. METAL CAN PKG (P/P DWG) See attached graphics following this page. 6