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SC4808B-2MSTRT Datasheet(PDF) 2 Page - Semtech Corporation |
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SC4808B-2MSTRT Datasheet(HTML) 2 Page - Semtech Corporation |
2 / 28 page 2 © 2009 Semtech Corp. www.semtech.com SC4808B-2 POWER MANAGEMENT Absolute Maximum Ratings Electrical Characteristics Parameter Test Conditions Min Typ Max Unit PWM Maximum Duty Cycle Fosc = 50kHz, FB = 5V, Measured at OUTA or OUTB 48 49 50 % Minimum Duty Cycle Fosc = 50kHz, FB = 1.5V, Measured at OUTA or OUTB 0 % Current Sense Gain 3 Maximum Input Signal 475 525 575 mV CS to Output Delay 100 ns Over Current Threshold .850 .950 1 V Internal Slope Compensation Resistor 25 k Ω FB to CS Offset 1.30 1.50 1.70 V Output OUT Low Level 0 .50 .70 V OUT High Level 11.0 11.25 12.00 V Rise Time 25 ns Fall Time 25 ns Parameter Symbol Maximum Units Supply Voltage V CC -0.5 to18 V Supply Current I CC 20 mA SYNC, RC,CS, LUVLO, REF to GND -0.5 to 7 V FB to GND V FB -0.5 to (V REF + 0.5) V REF Current I REF 10 mA OUTA/OUTB to GND V OUTA/B -0.5 to 18 V OUTA/OUTB Source Current (peak) I source -250 mA OUTA/OUTB Sink Current (peak) I sink 250 mA Power Dissipation at T A = 25°C P D 1.105 W Thermal Resistance θ JA 113.1 °C/W Junction Temperature T J -40 to 150 °C Storage Temperature Range T STG -65 to 150 °C Lead Temperature (Soldering) 10 Sec. T LEAD +300 °C ESD Rating (Human Body Model) V ESD 2 kV Unless specified: VCC = 12V; CL = 100pF; T A = -40°C to 105°C Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. |
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