UC1610 UC2610 UC3610 Dual Schottky Diode Bridge FEATURES DESCRIPTION • Monolithic Eight-Diode Array • Exceptional Efficiency This eight-diode array is designed for high-current, low duty-cycle applications typical of flyback voltage clamping for inductive loads. The dual bridge connection makes this device particularly applicable to bipolar driven stepper motors. • Low Forward Voltage • Fast Recovery Time • High Peak Current • Small Size The use of Schottky diode technology features high efficiency through lowered forward voltage drop and decreased reverse recovery time. This single monolithic chip is fabricated in both hermetic CERDIP and copperleaded plastic packages. The UC1610 in ceramic is designed for -55°C to +125°C environments but with reduced peak current capability. The UC2610 in plastic and ceramic is designed for -25°C to +125°C environments also with reduced peak current capability; while the UC3610 in plastic has higher current rating over a 0°C to +70°C temperature range. ABSOLUTE MAXIMUM RATINGS Peak Inverse Voltage (per diode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V Peak Forward Current UC1610 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A UC2610 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A UC3610 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A Power Dissipation at TA = +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C Note: Consult Packaging Section of Databook for thermal limitations and considerations of package. CONNECTION DIAGRAMS DIL-8 (TOP VIEW) N or J Package PLCC-20 (TOP VIEW) Q Package 3/95 SOIC-16 (TOP VIEW) DW Package UC1610 UC2610 UC3610 ELECTRICAL CHARACTERISTICS: All specifications apply to each individual diode. TJ = 25°C except as noted. TA = TJ. PARAMETER Forward Voltage Drop TEST CONDITIONS MIN TYP MAX UNITS IF = 100mA 0.35 0.5 0.7 V IF = 1A 0.8 1.0 1.3 V Leakage Current VR = 40V .01 0.1 mA VR = 40V, TJ = +100°C 0.1 1.0 mA Reverse Recovery 0.5A Forward to 0.5A Reverse 15 ns Forward Recovery 1A Forward to 1.1V Recovery 30 ns Junction Capacitance VR = 5V 70 pF Note: At forward currents of greater than 1.0A a parasitic current of approximately 10mA may be collected by adjacent diodes. Reverse Current vs Voltage Forward Current vs Voltage Reverse Recovery Characteristics Forward Recovery Characteristics UNITRODE INTEGRATED CIRCUITS 7 CONTINENTAL BLVD. • MERRIMACK, NH 03054 TEL. (603) 424-2410 • FAX (603) 424-3460 2