C O M 117T (COTS) COMMERCIAL OFF-THE-SHELF 1.5 AMP POSITIVE ADJUSTABLE VOLTAGE REGULATOR IN TO-257 PA C K A G E Three Terminal, Precision Adjustable Positive Voltage Regulator In TO-257 Package FEATURES • Built In Thermal Overload Protection • Short Circuit Current Limiting DESCRIPTION These three terminal positive regulators are supplied in hermetically sealed packages. All protective features are designed into the circuit, including thermal shutdown, current-limiting, and safe-area control. With heat sinking, these devices can deliver up to 1.5 amps of output current. The unit also features output voltages that can be fixed from 1.2 volts to 37 volts using external resistors. ABSOLUTE MAXIMUM RATINGS Tc @ 25°C Power Dissipation TO-257............................. ........................... . 20 W Input - Output Voltage Differential.................................... 40 V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C Lead Temperature (Soldering 10 seconds) . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C Thermal Resistance, Junction to Case:. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .4.2°C/W Maximum Output Current: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5 A Recommended Operating Conditions: Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.2 to 37 VDC Ambient Operating Temperature Range (TA ). . . . . . . . . . . .. . . - 55°C to + 125°C Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.25 to 41.25 VDC 3.3 - 1 3.3 C O M 117T ELECTRICAL CHARACTERISTICS -55°C TA 125°C, IL = 8mA (unless otherwise specified) Parameter Symbol Test Conditions Min. Reference Voltage V REF V DIFF = 3.0V, TA = 25°C • • V DIFF = 3.3V V DIFF = 40V Line Regulation R LINE 3.0V R LOAD V DIFF = 3.0V, 10mA (Note 1) VDIFF 3.3V Load Regulation (Note 1) 40V, Vout = Vref,TA = 25°C VDIFF 1.5A, TA = 25°C V DIFF = 3.3V, 10mA V DIFF = 40V, 10mA IL V DIFF = 40V, 10mA Thermal Regulation V RTH • 40V, Vout = Vref IL IL • 1.5A 300mA, TA = 25°C IL • 195mA V in = 14.6V, IL = 1.5A Max. 1.20 1.30 1.20 1.30 1.20 1.30 -9 9 -23 23 -15 15 -15 15 -15 15 -15 15 -16 16 Unit V mV mV mV P d = 20 Watts, t = 20 ms, TA =25°C Ripple Rejection • RN f = 120 Hz, Vout = Vref IAdj V DIFF = 3.0V, TA = 25°C (Note 2) dB C Adj = 10 µF Adjustment Pin Current 100 • • V DIFF = 3.3V V DIFF = 40V Adjustment Pin I ³Adj V DIFF = 3.0V, 10mA Current Change IL 1.5A, TA = 25°C V DIFF = 3.3V, 10mA V DIFF = 40V, 10mA IL V DIFF = 40V, 10mA 3.0V VDIFF 3.3V Miminum Load Current ILmin IL 1.5A 300mA, TA = 25°C IL 195mA 40V ICL V DIFF = 15V V DIFF = 40V, TA = 25°C (Note 2) µA 100 -5 5 -5 5 -5 5 -5 5 -5 5 • -5 5 V DIFF = 3.0V, VO U T = 1.4V (forced) V DIFF = 40V, VO U T = 1.4V (forced) Current Limit 100 • • • 40V, TA = 25°C V DIFF V DIFF = 3.3V, VO U T = 1.4V (forced) 3.3 66 µA 5.0 • • • 5.0 mA 5.0 1.5 3.5 0.18 1.5 A Notes: 1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used. Changes in output voltage due to heating effects must be taken into account separately. 2. If not tested, shall be guaranteed to the specified limits. 3. The •denotes the specifications which apply over the full operating temperature range. MECHANICAL OUTLINE TO-257AA PIN CONNECTION .200 .190 .420 .410 .045 .035 Front View Pin 1: Adjust Pin 2: Output Pin 3: Input Tab: Isolated .665 .645 .150 .140 .537 .527 .430 .410 .038 MAX. .750 .500 .005 1 2 3 .035 .025 .100 TYP. .120 TYP. 205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246