AN8083S

ICs for CD/CD-ROM Player AN8083S Low Voltage Operation IC for DC-DC Converter s Overview The AN8083S is an IC for controlling a DC-DC converter suitable for the switching power supply of various portable equipments. It can operate with input voltage 1.1V or more. 0.4 Unit : mm 1 2 3 16 15 14 13 12 11 10 9 1.5±0.2 10.1±0.3 0.4±0.25 s Features Operatable with low voltage input (PVCC>1.1V) Decreased voltage detection circuit built-in Short-circuit protection feature built-in Provided with reset output Synchronizable with outside clock Low consumption current in stand-by mode Output voltage in secondary side; 4.8V+0.3V (Variable by using external resistance) 4 5 1.27 6 7 8 0.1±0.1 0.3 4.2±0.3 6.5±0.3 16-lead SOP package (SOP016-P-0225A) s Block Diagram RESET VCC EMP 15 16 13 VSEN 14 2.15V VREF START 10 CT 7 0.85V 0.25V + – 4.2V + – 1.25V 4.8V Starter SW Early Value Set. 2.0V + – –25µA 30kΩ 0.725V 0.9V 6 63kΩ GND 0.7V – + – + + Power OFF Switching Circuit 11 POWER 3.0 → 2.5V 8 PVCC Starter Triangular Wave 9 CLK VREF 12 + – 1 IN 1.25V 2 FB 3 SPRO 4 DED 5 OUT 0.15 0.65 AN8083S s Absolute Maximum Ratings (Ta=25˚C) Parameter Supply Voltage Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC PVCC PD Topr Tstg ICs for CD/CD-ROM Player Rating 14.4 14.4 380 –20 ~ +75 –55 ~ +125 Unit V mW ˚C ˚C s Recommended Operating Range (Ta=25˚C) Paramenter Operating Supply Voltage Range Symbol VCC PVCC Range 1.8V ~ 12V 1.1V ~ 12V s Elec...