INTERIM ISSUE (Specifications Subject to Change Without Notice) INTEGRATED CIRCUIT August 20, 1984 Snes ENGINEERING BULLETIN ULN-8161M THE MARK OF RELIABILITY a Penn Central unit ULN-8161M (NE5561N) SWITCHED-MODE POWER SUPPLY CONTROL CIRCUIT Ry, Cr FEATURES @ Vs Stabilized Power Supply vourace| GENERATOR @ Current Limiting I @ Temperature-Compensated + Reference Source ERROR 5 OUTPUT Sawtooth Generator FEEDBACK @4- PWM LATCH @ Pulse-Width Modulator GAIN @ Double-Pulse Protection oaey SS Applications in: Switched-Mode Power Supplies Motor Controller-Inverters CuRRES! @42 D-C/D-C Converters ESIGNED FOR USE in low-cost switched- mode power supplies, the Type ULN-8161 controller excels in applications requiring gn limited housekeeping functions. is normally marked with the part number, NE5561N; however, art number should be used in orders pondence. The integrated circuit has its own teg compensated reference source, int reference, sawtooth waveform amplifier, pulse-width modul ABSOLUTE MAXIMUM RATINGS atT, = +25C ' Supply Voltage, V; (Voltage-Fed) .................. 18V Supply Current, |, (Current-Fed)......0......00... 30 mA Output Current, |) 2... eee 40 mA Output Duty Cycle 2... eee, 98% Package Power Dissipation, P,................... 1.5 W* Operating Temperature Range, T,........... 0C to + 70C Storage Temperature Range, T; ......... 65C to + 150C *Derate at the rate of 12.5 mW/C above T, = + 25C. INTEGRATED CIRCUIT OPERATIONS SPRAGUE ELECTRIC COMPANY 115 Northeast Cutoff, WORCESTER, MASS. 01606 ULN-8161M SWITCHED-MODE POWER SUPPLY CONTROL CIRCUIT ELECTRICAL CHARACTERISTICS at T, = + 25C, V, = 12 V (unless otherwise noted) Test Limits Characteristic Pin Test Conditions Min. Typ. Max. Units Supply Clamp Voltage 1 I; = 10 mA, Current-fed 19 24 V |, = 30 mA, Current-fed 20 30 vo Internal Reference, Vee; | Over operating temperature range 3.55 3.98 V | T= +25C 3.57 3.76 3.96 V Temperature Coefficient of Vic; +100 = ppm/C Zener Reference, V, 2 2= ~70mA 78 8.4 9.0 V Temperature Coefficient of V, 2 + 150 ppm/C Oscillator Frequency Range 5 Over operating temperature range 50 100k Hz Initial Oscillator Accuracy 5 5.0 % Duty-Cycle Range 5 fy = 20 kHz 0 98 % Input Current 6 V, = 250 mV, Over operating temperature range 20 pA 6 V, = 250 mV, T, = + 25C -2.0 -10 pA inhibit Delay 6 Single pulse, 20% overdrive at |, = 20mA 700 800 ns Trip Level 6 Current limit 400 520 600 mV Error-Amoplifier Gain 3-4 | Open loop 60 dB Error-Amplifier Feedback Resistance 4 10 kQ Small-Signal Bandwidth 3-4 3.0 MHz Output-Voltage Swing 4 Positive limit 6.2 V 4 Negative limit 0.6 V Output Current 7 Over operating temperature range 20 ~ mA Output-Saturation Voltage 7 |, = 20 mA 0.5 V Supply Current 1 |, = 0, Over operating temp. range, Voltage-fed 15 mA 1 = 0,1, = + 29C, Voltage-fed 9.0 mA ORDERING INFORMATION Original Source * Sprague Operating Part Number Part Number Temperature Range Package NE5561N ULN-8161M 0C to + 70C Plastic * These devices are manufactured in accordance with a cross-license with Signetics Corp. (a subsidiary of U.S. Philips Corp.). Copyright 1982 and 1984, Sprague Electric Company, North Adams, Mass. -2- ULN-8161M SWITCHED-MODE POWER SUPPLY CONTROL CIRCUIT FREQUENCY IN KHz TEST CIRCUIT O CURRENT SENSE DUTY- CYCLE ADJUST WA- LL Ry =2.62K r Cr=0.01pF * REQUIRED FOR CURRENT-FED OPERATION ONLY Dwg.No. A-12,479 TYPICAL OSCILLATOR FREQUENCY AS A FUNCTION OF TIMING CAPACITANCE 1000 300 100 30 10 3.0 1.0 0.001 0.002 0.004 0.006 0.008 0.01 CAPACITANCE, Cr, IN UF Owg.No. A-12,480 ULN-8161M . SWITCHED-MODE POWER SUPPLY CONTROL CIRCUIT DIMENSIONS IN INCHES a.ol4 0.008 8765 AAA A 0.260 0310 0.240 0290 \ INDEX AREA Ed uy u u 15 065 __| im be O.040 REF 0038 s Te oic0 + 0.010 0390 NOTE 1 0.36 0.200 MAX. LEADS 1, | SEATING PLANE AND 8 ou 7 VENDOR'S OPTION 9.020 ds 0.02 O18 Dwg.No. A-5842D 1% DIMENSIONS IN MILLIMETRES Based on 1 = 25.4 mm 0.35 021 Agan t f 60 787 T37 INDEX AREA_*, H y T _4+ 4 se 4 1102 REF 9 Ll. F 165 | L. 1 "EE asacoes 6. 6. 088 991 NOTE 1 O14 5.08 MA\ SEATING PLANE LEADS 1, 4, 5, 7 AND 8 AT Pay, a VENDOR'S OPTION ob MIN. +388 Owg.No. A-5842D MM NOTES: 1. Lead spacing tolerance is non-cumulative. 2. Exact body and lead configuration at vendor's option within limits shown. 3. Lead gauge plane is 0.030 (0.76 mm) max. below seating plane. E/EBBF In the construc- tion of the compo- nents described, the full intent of the specification will be met. The Sprague Electric Company, however, reserves the right to make, from time to time, such departures from the detail spec- ifications as may be required to permit improvements in the design of its prod- ucts. Components made under military approvals will be in accordance with the approval require- ments. The information included herein is believed to be ac- curate and reliable. However, the Sprague Electric Company assumes na responsibility for its use; nor for any in- fringements of pat- ents or other rights of third parties which may result from its use. 2084 Litho in U.S. Amer.