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SI9165 Datasheet(PDF) 2 Page - Vishay Siliconix |
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SI9165 Datasheet(HTML) 2 Page - Vishay Siliconix |
2 / 8 page Si9165 Vishay Siliconix www.vishay.com 2 Document Number: 70845 S-40693—Rev. C, 19-Apr-04 ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND VDD 6.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MODE, PWM/PSM, SYNC, SD, VREF, ROSC COMP, FB −0.3 V to VDD +0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . VO −0.3 V to VS +0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PGND "0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltages Referenced to PGND VS, VIN/OUT 6.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COIL −0.4 V to VIN/OUT +0.4 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak Output Current 3 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Output Current 1 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range −65 to 150_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Junction Temperature 150_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Dissipation (Package)a 20-Pin TSSOP (Q Suffix)b 1.0 W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal Impedance (ΘJA) 20-Pin TSSOP 125_C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Notes a. Device mounted with all leads soldered or welded to PC board. b. Derate 8.0 mW/ _C above 25_C. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS Voltages Referenced to GND VDD 2.7 V to 6 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MODE, PWM/PSM, SYNC, SD 0 V to VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltages Referenced to PGND VS, VIN/OUT 2.7 V to 6 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fosc 200 kHz to 2 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rosc 25 kW to 300 kW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VREF Capacitor 0.1 mF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS Test Conditions Unless Otherwise Specified Limits Parameter Symbol Unless Otherwise Specified 2.7 V < VDD < 6V, VIN/OUT = 3.3 V, VS = 3.3 V Mina Typb Maxa Unit Reference Output Voltage VREF IREF = 0 1.268 1.3 1.332 V Output Voltage VREF TA = 25°C, IREF = 0 1.280 1.3 1.320 V Load Regulation DVREF VDD = 3.3 V, −500 µA < IREF <0 3 mV Power Supply Rejection PSRR 60 dB UVLO Under Voltage Lockout (turn-on) VUVLOLH 2.3 2.4 2.5 V Hysteresis VHYS VUVLOLH − VUVLOHL 0.1 V Soft-Start Time SS time tss 6 ms Mode Logic High VIH 0.7 VDD V Logic Low VIL 0.3 VDD V Input Current IL −1.0 1.0 mA SD, SYNC, PWM/PSM Logic High VIH 2.4 V Logic Low VIL 0.8 V Input Current IL −1.0 1.0 mA |
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