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SC1563IMS-1.8 Datasheet(PDF) 3 Page - Semtech Corporation |
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SC1563IMS-1.8 Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 8 page © 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 VERY LOW DROPOUT, LOW QUIESCENT 500mA REGULATOR SC1563 PRELIMINARY - September 11, 2000 3 NOTES: (1) Low duty cycle pulse testing with Kelvin connections required. (2) Defined as the input to output differential at which the output voltage drops to 1% below the value measured at a differential of 0.7V. (3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this requirement. Adjustable versions only. (4) Guaranteed by design. (5) When V ADJ exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the error amplifier and connects V ADJ instead. ELECTRICAL CHARACTERISTICS (Cont.) Unless specified: V SHDN = 0V Adjustable Option (V ADJ > VTH(ADJ)): VIN = 2.2 to 5.5V and IO = 10µA to 500mA Fixed Options (V ADJ = GND): VIN = (VO + 0.7V) to 5.5V and IO = 0A to 500mA Values in bold apply over the full operating temperature range. Parameter Symbol Test Conditions Min Typ Max Units VO (Cont.) Dropout Voltage (2) V D I LOAD = 2mA 1 5 mV 10 I LOAD = 100mA 75 100 mV 150 I LOAD = 250mA 200 300 mV 400 I LOAD = 500mA 450 550 mV 700 Minimum Load Current (3) I O V IN = VO + 0.7V 1 10 µA Current Limit I CL 0.50 1.00 A ADJ Reference Voltage (1) V REF V IN = 2.2V, VADJ = VOUT, IO = 10mA 1.188 1.200 1.212 V 1.176 1.224 Adjust Pin Current (4) I ADJ V ADJ = VREF 50 100 nA Adjust Pin Threshold (5) V TH(ADJ) 0.10 0.20 0.40 V SHDN Shutdown Pin Current I SHDN V SHDN = 0V, VIN = 3.3V 1 10 µA Shutdown Pin Threshold V IH V IN = 3.3V 1.8 V V IL V IN = 3.3V 0.4 OVER TEMPERATURE PROTECTION High Trip Level T HI 165 °C Hysteresis T HYST 10 °C |
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