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SM600/SM601/SM602/ SM610/SM611/SM612 SWITCHING REGULATOR POWER OUTPUT STAGES
DESCRIPTION
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.
FEATURES
* 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
4/90 Rev 1.1 2/94
Copyright (c) 1994
1
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
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 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
Thermal Resistance Power Switch, J - C ................................................... 4.0C/W Commutating Diode .................................................. 4.0C/W Case to Ambient, C - A ............................................ 60.0C/W
Note 1. Exceeding these ratings could cause damage to the device.
Operating Junction Temperature Hermetic (R Package) .................................................. 150C Storage Temperature Range ............................. -65C to 150C Lead Temperature (Soldering, 10 Seconds) ................... 300C
THERMAL DATA
R Package: Thermal Resistance-Junction to Case, JC .................. 4.0C/W Thermal Resistance-Junction to Ambient, JA .............. 40C/W
Note A. Junction Temperature Calculation: TJ = TA + (PD x JA). Note B. The above numbers for JC are maximums for the limiting
thermal resistance of the package in a standard mounting configuration. The JA numbers are meant to be guidelines for the thermal performance of the device/pcboard system. All of the above assume no ambient airflow.
RECOMMENDED OPERATING CONDITIONS
(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 ....................................................... 0C to 70C SM6XXHRR ........................................... -55C to 125C
Note 2. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply for the operating ambient temperature of TA = 25C. 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 = 125C V1 = Rated output voltage V1 = Rated output voltage, TA = 125C
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 A A A A
Note 3. Pulse test: Duration = 300s, Duty Cycle 2%.
4/90 Rev 1.1 2/94
Copyright (c) 1994
2
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SM600/SM601/SM602/SM610/SM611/SM612
ELECTRICAL CHARACTERISTICS
Parameter
(continued)
Test Conditions
SG600/601/602 SG610/611/612 Min. Typ. Max. Min. Typ. Max. 20 50 30 450 50 70 85 40 75 50 75 150 20 50 30 450 50 70 85 40 75 50 75 150
Units ns ns ns ns ns ns %
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)
AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS
(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
4/90 Rev 1.1 2/94
Copyright (c) 1994
3
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
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
(See Note Below)
Part No. SM600R SM600HRR SM601R SM601HRR SM602R SM602HRR SM610R SM610HRR SM611R SM611HRR SM612R SM612HRR
Ambient Temperature Range 0C to 70C -55C to 125C 0C to 70C -55C to 125C 0C to 70C -55C to 125C 0C to 70C -55C to 125C 0C to 70C -55C to 125C 0C to 70C -55C to 125C
Connection Diagram
POSITIVE OUTPUT
1 2 4 3
POSITIVE INPUT
COMMON
DRIVE
NEGATIVE OUTPUT
1 2 4 3
NEGATIVE INPUT
COMMON
DRIVE
Note 1. All packages are viewed from the top. 2. Case is electrically isolated. 3. Consult factory for additional screening available. 4/90 Rev 1.1 2/94
Copyright (c) 1994
4
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.

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