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SG1577 Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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SG1577 Datasheet(HTML) 6 Page - Fairchild Semiconductor |
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6 / 15 page  © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com SG1577 • Rev. 1.0.5 6 Electrical Characteristics VCC=12V, TA =25°C, unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Unit Oscillator fosc Oscillator Frequency RRT=OPEN 54 60 66 KHz RRT=GND 288 320 352 fosc,rt Total Accuracy 20k Ω＜RRT -10 10 % DON_MAX Maximum Duty Cycle 85 90 95 % Error Amplifier VREF Internal Reference Voltage VCC=8V, VCC=15V 0.6895 0.7000 0.7105 V △ VREF Temperature Coefficient (1) TA=0~85 °C 0.03 mV/ °C AVOL Open-Loop Voltage Gain 77 dB BW Unity Gain Bandwidth 3.5 MHz PSRR Power Supply Rejection Ratio 50 dB ISOURCE Output Source Current IN1=IN2=0.6V 60 80 100 µA ISINK Output Sink Current IN1=IN2=0.8V 500 µA VH COMP Output Voltage IN1=IN2=0.6V 5 V VL COMP Output Voltage IN1=IN2=0.8V 100 mV Soft Start ISOURCE Soft-Start Charge Current VCLP＜VCLN 8 10 12 µA ISINK Soft-Start Discharge Current VCLP＞VCLN 0.8 1.0 1.2 µA Protections IOSCET OC Sink Current VCC=12V 90 120 150 µA TOT Over-Temperature 150 °C TOT_hys Over-Temperature Hysteresis 20 °C VOVP Over-Voltage Protection of IN VOVP/VIN 112 125 % Output IDH High-Side Current Source VBST - VCLN=12V,VDH - VCLN=6V 1.0 1.7 A RDH High-Side Sink Resistor VBST - VCLN=12V 3.3 4.0 Ω IDL Low-Side Current Source VCC=12V,VDL=6V 1.0 1.7 A RDL Low-Side Sink Resistor VCC=12V 3.1 4.0 Ω tDT Dead Time (2) VCC=12V, DH and DL=1000pF 10 40 70 ns Total Operating Current ICC_OP Operating Supply Current VCC=12V, No Load 3.3 4.3 5.3 mA ICC_SBY Standby Current (Disabled) SS1/ENB=SS2/ENB=0V 0.55 1.00 mA Notes: 1. Not tested in production; 30pcs sample. 2. When VDL falls less than 2V relative to VDH rising to 2V. |
Similar Part No. - SG1577_10 |
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Similar Description - SG1577_10 |
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