AIC1577 AIC [Analog Intergrations Corporation], AIC1577 Datasheet
AIC1577
Related parts for AIC1577
AIC1577 Summary of contents
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... No.1, Li-Hsin Rd Science Park , Hsinchu 300, Taiwan , R.O.C. TEL: 886-3-5772500 FAX: 886-3-5772510 DESCRIPTION The AIC1577 is a current mode switching regulator controller that drives external N- channel power MOSFET using a fixed fre- quency architecure. It uses external divider to adjust output voltage from 0.8V to 20V with excellent line and load regulation ...
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... ORDERING INFORMATION AIC1577-XXXX PACKING TYPE TB: TUBE TR: TAPING & REEL PACKAGING TYPE S: SMALL OUTLINE O: MSOP8 C: Commercial P: Lead Free Commercial Example: AIC1577COTR in MSOP Package & Taping & Reel Packing Type AIC1577POTR in MSOP Lead Free Package & Taping & Reel Packing Type C1 1000pF 8 VIN ...
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... Vout, ∆ OVL OVL Sinking 5µ Sourcing 5µ =0.72V FB AIC1577 25V 32V 25V -40°C ~ 85°C 125°C -65°C ~ 150°C 260°C 100°C/W 160°C/W 180°C/W =15V, unless otherwise noted.) (note1) IN MIN. ...
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... BOOST V =0V, V =0V ITH/RUN FB V =1V ITH/RUN 100 = =12V =19V 1000 10000 =3.3V) Fig. 2 Efficiency vs Load Current (V OUT AIC1577 MIN. TYP. MAX 4.9 5 7.5 1.0 2.3 100 190 =5V OUT V V =12V 100 1000 Load Current (mA) OUT UNIT ...
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... V OUT I LOAD I LOAD Input Voltage (V) Fig. 4 Efficiency vs Input Voltage V =15V PHASE Boost Load Current (mA) Fig. 6 Boost Load Regulation - 100 Temperature (°C) Fig. 8 Reference Voltage vs Temperature AIC1577 =5V =1A =0. =5V CC =0V 20 120 140 5 ...
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... Temperature (°C) Fig. 11 Maximum Current Sense Threshold vs Temperature 500 480 460 440 I =1mA BOOST 420 V =0V PHASE 400 80 100 120 140 - 40 Fig. 10 Operating Frequency vs Temperature 80 100 120 140 AIC1577 (Continued) - 100 Temperature (°C) 120 140 6 ...
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... ITH ITH EA - 0.855V + FB FB OVDT COMP Slope Clock + 0.8V 2. Thermal + 1.33V ITH - Burst_Mode R Clock 0.8V S VIN REF Slope OSC 0.8V AIC1577 VIN VIN VIN 40mV - VINT LC_COMP VIN INTVCC LEB Blank SD Floating Driver Switching Logic Q VINT Dropout 1_SHUT DET BOOST DRI GND 7 ...
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... Available N-channel power packages are in SOP8 and MSOP8 for SMD. Principle of Operation AIC1577 uses a current mode with a constant fre- quency architecture. Normally high-side MOSFET turns on each cycle when oscillator sets RS latch and it turns off when internal current comparator re- sets RS latch. Voltage on I output voltage of voltage error amplifier, will control peak inductor current ...
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... Generally speaking, low inductance in PFM mode will cause the efficiency to decrease. Power MOSFET Selection For an application of AIC1577, an external N- channel power MOSFET, used as the high-side switch, must be properly selected. To prevent MOSFET from damage during high input voltage operation, attention should be taken to the BV specification for MOSFET ...
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... SW rises to V BOOST pin rises INTV IN 0.1µF is acceptable. Output Voltage Programming The typical AIC1577 application circuit is shown in figure18. A resistive divider the following for- mula, sets the output voltage. V OUT The feedback reference voltage 0.8V allows low output voltages from 0 ...
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... No sensitive components, which may cause noise interference to the circuit, should be allowed to be close to SW pin. Furthermore, AIC1577 is a current mode controller. Remaining the sense resistor close to both VIN and CS pins is recommended for better efficiency and output performance. In addition, all filtering and de- coupling capacitors, such as C1 and C2, should connect to AIC1577 as close as possible ...
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... C1 1000pF 1 8 VIN BOOST ITH/RUN 0.1 µ DRI GND AIC1577 C3 0.1 µ 20k 1nF R2 62k AIC1577 V 6V~24V IN1 S + 33m 22 µ µ FDS6694 V 3. OUT 10 µ SL43 OUT 220 µ F 2.2 µ F ...
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... Fig 3.3V Step-Down Converter (unit: mm SEE VIEW θ WITH PLATING BASE METAL GAUGE PLANE SEATING PLANE AIC1577 IN2 IN1 S + 33m 22 µ µ FDS6694 V 3. OUT 10 µ ...
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... SEE VIEW θ b BASE METAL SECTION A-A AIC1577 MSOP-8 MILLIMETERS MIN. MAX. 1.10 0.05 0.15 0.75 0.95 0.25 0.40 0.13 0.23 2.90 3.10 4.90 BSC 2.90 3.10 0.65 BSC 0.40 0.70 0° ...