SM600/SM601/SM602/ SM610/SM611/SM612 SWITCHING REGULATOR POWER OUTPUT STAGES DESCRIPTION FEATURES The SM600/601/602 and SM610/611/612 series of Power Output Stages are especially designed to be driven with standard PWM integrated circuits to form an efficient switching power supply. The SM600, SM601 and SM602 are optimized for non-isolated Buck and Buck-Boost application, where SM610, SM611 and SM612 are best suited for DC-DC Boost type applications as well as negative output Buck Converters. The hybrid circuit construction utilizes thick film resistors on a beryllia substrate for maximum thermal conductivity and resultant low thermal impedance. All of the active elements in the hybrid are fully passivated. • Equivalent to the Unitrode PIC 600, 601, 602, 610, 611, 612 • 5A current capability • Designed and characterized for switching regulator applications such as Buck, Boost, and Buck-Boost type • Cost saving design reduces size, improves efficiency, reduces noise and RFI • High operating efficiency at 2A typical performance Rise and fall time < 75ns Efficiency > 85% • Electrically isolated, 4-pin, TO-66 hermetic case HIGH RELIABILITY FEATURES ♦ Available with high reliability processing FUNCTIONAL DIAGRAM SM600/SM601/SM602 SM610/SM611/SM612 LINFINITY 4/90 Rev 1.1 2/94 Copyright 1994 1 Microelectronics Inc. 11861 Western Avenue ∞ Garden Grove, CA 92841 (714) 898-8121 ∞ FAX: (714) 893-2570 SM600/SM601/SM602/SM610/SM611/SM612 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage, V4 - 2 ........................................ Output Voltage, V1 - 2 ..................................... Drive Input Reverse Voltage, V3 - 4 ............... Output Current, I1 ......................................... Drive Current, I3 ........................................... SM600 60V 60V 5V 5A -0.2A SM601 80V 80V 5V 5A -0.2A Thermal Resistance Power Switch, θJ - C ................................................... 4.0°C/W Commutating Diode .................................................. 4.0°C/W Case to Ambient, θ C - A ............................................ 60.0°C/W SM602 100V 100V 5V 5A -0.2A SM610 -60V -60V -5V -5A 0.2A SM611 -80V -80V -5V -5A 0.2A SM612 -100V -100V -5V -5A 0.2A Operating Junction Temperature Hermetic (R Package) .................................................. 150°C Storage Temperature Range ............................. -65°C to 150°C Lead Temperature (Soldering, 10 Seconds) ................... 300°C Note 1. Exceeding these ratings could cause damage to the device. THERMAL DATA R Package: Thermal Resistance-Junction to Case, θ JC .................. 4.0°C/W Thermal Resistance-Junction to Ambient, θ JA .............. 40°C/W RECOMMENDED OPERATING CONDITIONS Note A. Junction Temperature Calculation: TJ = TA + (PD x θ JA). Note B. The above numbers for θJC are maximums for the limiting thermal resistance of the package in a standard mounting configuration. The θJA numbers are meant to be guidelines for the thermal performance of the device/pcboard system. All of the above assume no ambient airflow. (Note 2) SM600 Input Voltage, V4 - 2 ......................................... 50V Output Voltage, V1 - 2 ...................................... 50V Drive Input Reverse Voltage, V3 - 4 ................. 3V Output Current, I1 ........................................... 4A Drive Current, I3 .............................................. -0.1A SM601 70V 70V 3V 4A -0.1A SM602 90V 90V 3V 4A -0.1A SM610 -50V -50V -3V -4A 0.1A SM611 -70V -70V -3V -4A 0.1A SM612 -90V -90V -3V -4A 0.1A Operating Ambient Temperature Range SM6XXR ....................................................... 0°C to 70°C SM6XXHRR ........................................... -55°C to 125°C Note 2. Range over which the device is functional. ELECTRICAL CHARACTERISTICS (Unless otherwise specified, these specifications apply for the operating ambient temperature of TA = 25°C. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) Parameter On-State Voltage (Note 3) Diode Forward Voltage (Note 3) Off-State Current Diode Reverse Current Test Conditions I4 = 2A(-2A), I3 = -20mA (20mA) I4 = 5A(-5A), I3 = -20mA (20mA) I4 = 2A(-2A) I4 = 5A(-5A) V4 = Rated input voltage V4 = Rated input voltage, TA = 125°C V1 = Rated output voltage V1 = Rated output voltage, TA = 125°C SG600/601/602 SG610/611/612 Min. Typ. Max. Min. Typ. Max. 1.0 1.5 -1.0 -1.5 2.5 3.5 -2.5 -3.5 0.8 1.0 -0.8 -1.0 1.0 1.5 -1.0 -1.5 0.1 10 -0.1 -10 10 -10 1.0 10 -1.0 -10 500 -500 Units V V V V µA µA µA µA Note 3. Pulse test: Duration = 300µs, Duty Cycle ≤ 2%. LINFINITY 4/90 Rev 1.1 2/94 Copyright 1994 2 Microelectronics Inc. 11861 Western Avenue ∞ Garden Grove, CA 92841 (714) 898-8121 ∞ FAX: (714) 893-2570 SM600/SM601/SM602/SM610/SM611/SM612 ELECTRICAL CHARACTERISTICS (continued) Parameter SG600/601/602 SG610/611/612 Min. Typ. Max. Min. Typ. Max. Test Conditions Dynamic Characteristics (See Figures 1 & 2) (Notes 4 & 5) Current Delay Time Current Rise Time Voltage Rise Time Voltage Storage Time Voltage Fall Time Current Fall Time Efficiency (Note 5) 20 50 30 450 50 70 85 AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS 40 75 50 75 150 20 50 30 450 50 70 85 Units 40 75 50 75 150 ns ns ns ns ns ns % (Note 6) SM600 SM601 SM602 FIGURE 1 - SM600/601/602 SWITCHING SPEED CIRCUIT FIGURE 2 - SM600/601/602 SWITCHING WAVEFORMS Note 4. In switching an inductive load, the current will lead the voltage on turn-on and lag the voltage on turn-off (see Figure 2). Therefore, Voltage Delay Time (tDV) ≅ tdi + tri and Current Storage Time (t si) ≅ tsv + tfv . Note 5. The efficiency is a measure of internal power losses and is equal to Output Power divided by Input Power. The switching speed circuit of Figure 1, in which the efficiency measured, is represenative of typical operating conditions for the SM600 series switching regulators. Note 6. SM610/611/612 Test Circuit and waveforms are identical but of opposite polarity (V IN = -25V, VOUT = -5V, IDRIVE = +20mA). APPLICATION CIRCUITS SM60X SM60X FIGURE 3 - STEP DOWN (BUCK) CONVERTER FIGURE 4 - NEGATIVE OUTPUT DOWN/UP (BUCK-BOOST) CONVERTER LINFINITY 4/90 Rev 1.1 2/94 Copyright 1994 3 Microelectronics Inc. 11861 Western Avenue ∞ Garden Grove, CA 92841 (714) 898-8121 ∞ FAX: (714) 893-2570 SM600/SM601/SM602/SM610/SM611/SM612 APPLICATION CIRCUITS (continued) SM61X FIGURE 5 - STEP UP (BOOST) CONVERTER CONNECTION DIAGRAMS & ORDERING INFORMATION Package 4-PIN TO-66 METAL CAN R - PACKAGE Part No. (See Note Below) Ambient Temperature Range SM600R SM600HRR SM601R SM601HRR SM602R SM602HRR 0°C to 70°C -55°C to 125°C 0°C to 70°C -55°C to 125°C 0°C to 70°C -55°C to 125°C SM610R SM610HRR SM611R SM611HRR SM612R SM612HRR 0°C to 70°C -55°C to 125°C 0°C to 70°C -55°C to 125°C 0°C to 70°C -55°C to 125°C Connection Diagram POSITIVE OUTPUT POSITIVE INPUT 1 4 2 3 COMMON DRIVE NEGATIVE OUTPUT COMMON NEGATIVE INPUT 1 4 2 3 DRIVE Note 1. All packages are viewed from the top. 2. Case is electrically isolated. 3. Consult factory for additional screening available. LINFINITY 4/90 Rev 1.1 2/94 Copyright 1994 4 Microelectronics Inc. 11861 Western Avenue ∞ Garden Grove, CA 92841 (714) 898-8121 ∞ FAX: (714) 893-2570