Panasonic AN8086S free download

File name AN8086S.pdf

ICs for CD/CD-ROM Player AN8086S Low Voltage Operation IC for DC-DC Converter s Overview The AN8086S is an IC for controlling a DC-DC converter suitable for the switching power supply of various portable equipment. It can operate with input voltage 1.1V or more. The AN8086S is based on AN8083S with the output voltage in the secondary side changed to 3.6V. 0.4 1 2 3 0.4±0.25 4 5 1.27 6 7 8 16 15 14 13 12 11 10 9 1.5±0.2 0.3 4.2±0.3 6.5±0.3 VREF 12 0.85V 0.25V + ­ 3.24V + ­ 2.7V 2.5V 4.8V Starter SW Early Value Set. 2.0V 0.7V 1.25V + ­ ­ + ­ + + 0.725V 0.9V 6 63k GND Power Off Switching Circuit 8 PVCC Starter Triangular Wave 9 CLK 11 POWER 0.15 0.65 10.1±0.3 Unit : mm 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 s Block Diagram RESET VCC 15 16 EMP 13 2.2V VSEN 14 VREF START 10 CT 7 + ­ 30k 1 IN 2 FB 3 SPRO 4 DED 5 OUT 0.1±0.1 16-lead SOP package (SOP016-P-0225A) ICs for CD/CD-ROM Player s Absolute Maximum Ratings (Ta=25°C) Parameter Supply Voltage Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC PVCC PD Topr Tstg Rating 14.4 14.4 380 ­20 ~ +75 ­55 ~ +125 AN8086S Unit V mW °C °C s Recommended Operating Range (Ta=25°C) Parameter Operating Supply Voltage Range Symbol VCC PVCC Range 3.6V ~ 12V 1.1V ~ 12V s Electrical Characteristics (Ta=25°C) Parameter Power VCC Stand-by Mode Supply Current Power VCC No Load Supply Current Output Voltage Reset Output Threshold Voltage Decreased Voltage Detection Threshold Voltage Short-Circuit Protection Operating Voltage Short-Circuit Protection Operating Voltage Triangular oscillation Frequency in Normal Operation Triangular oscillation Frequency at Start Output Voltage Output Voltage Symbol IPVCC IPVCC VO VTH (RESET) VTH (VSEN) VO (SPRO) VO (SPRO) fOSC1 fOSC2 VOH (OUT) VOL (OUT) VIN=0V, VPOWER=2V VIN=1V, VPOWER=0V RREF=33k, CT=330pF RREF=33k, CT=330pF VCC=1.9V, PVCC=3V IO=­20mA, VCT=0V IO=20mA, VCT=1V VTH Ч 0.85 2.1 1.35 1.7 60 80 1.2 70 100 Condition VCC=0V, PVCC=3V VCC=3.1V, PVCC=3V 1.2 3.6 VTH Ч 9 VTH Ч 0.95 2.2 2.3 2.1 3.2 80 120 1.6 0.4 min. typ. max. 2 3 Unit µA mA V V V V V kHz kHz V V Note) Unless otherwise specified, VCC =4.8V, PVCC=3V s Application Circuit Example 3.6V 330pF VREF 33k 12 RESET VCC EMP 15 16 13 VSENSE 2.2V START 14 VREF 10 CT 7 0.85V 0.25V + ­ ­ + Starter 2.7V 2.5V 3.24V Triangular Wave CLK 9 PVCC 8 POWER 4.8V Starter SW Early Value Set. 2.0V 0.7V 1.25V + ­ ­ + ­ + + Power OFF Swiching Circuit 11 ­25µA 30k 0.9V 0.725V + ­ GND 6 63k 0.01µF 1 IN 33k 2 FB + 0.01µF 3 SPRO 47µF 4 DED 0.01µF 5 OUT 100 ICs for CD/CD-ROM Player s Pin Description Pin No. 1 2 Symbol IN FB · Input pin for error amplifier · Threshold voltage ; 0.7V · Output pin for error amplifier Description AN8086S 3 SPRO · Short-circuit protection