AIC1880 AIC [Analog Intergrations Corporation], AIC1880 Datasheet
AIC1880
Related parts for AIC1880
AIC1880 Summary of contents
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... Si-Soft Research Center 3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C. TEL: 886-3-5772500, FAX: 886-3-5772510 DESCRIPTION The AIC1880 is a step-up DC/DC converter with a 1.6A, 0.3Ω internal power switch. A soft-start pro- grammed with an external capacitor sets the input current ramp rate. Pin-selectable high switching frequency (640kHz or 1 ...
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... ORDERING INFORMATION AIC1880PX XX PACKING TYPE TR: TAPE & REEL TB: TUBE PACKAGING TYPE O: MSOP-8 P: LEAD FREE COMMERCIAL Example: AIC1880POTR In MSOP-8 Package & Taping & Reel Packing Type ABSOLUTE MAXIMUM RATINGS SHDN VIN, FB, , COMP, FREQ GND LX to GND Operating Ambient Temperature Range T Operating Maximum Junction Temperature T Storage Temperature Range Lead Temperature (Soldering 10 Sec ...
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... IN FREQ=GND FREQ=V IN Level to produce V =1.24V COMP V =1.24V FB Level to produce V =1.24V COMP 2.6V < V < 5.5V IN Δ I=5µA I =1. =12V LX SHDN , FREQ V =2.6V to 5.5V IN SHDN , FREQ V =2.6V to 5.5V IN SHDN , FREQ AIC1880 MIN TYP MAX SYMBOL V 2.6 5.5 IN 2.20 2.35 2.50 UVLO 0. 540 640 740 ...
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... OSC L = 6.8 µ H 0.6 0.5 0.4 f OSC 0 10V OUT 0.0 100 1000 2.5 =10V OUT f = 640kHz OSC µ 1.2MHz OSC L = 6.8 µ 100 OUTPUT CURRENT (mA) =3.3V, V =10V IN OUT ) f = 640kHz OSC = 1.2MHz 3.0 3.5 4.0 INPUT VOLTAGE (V) Fig. 4 No-Load supply current AIC1880 10V OUT 1000 4.5 5.0 4 ...
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... OUT V = 10V OUT f 3.8 4.0 4.2 4.4 3.6 3.2 3.4 INPUT VOLTAGE (V) ∆ I OUT f =640kHz OSC L=6.8µH C =44µF OUT R = 62kΩ COMP C = 820pF COMP V AC Couple C = 10pF OUT COMP2 =3.3V OUT f OSC I OUT AIC1880 = 640kHz OSC 4.6 4.8 5.0 =5V OUT =3.3V IN =10V OUT =640kHz =10mA =32µF OUT =4.7nF SS 5 ...
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... LOCK OUT ERROR COMPARATOR CONTROL AND DRIVER LOGIC CLOCK CURRENT SENSE SLOPE COMPEN- SATION PIN 7: FREQ PIN 8: SS AIC1880 SOFT- UVLO START 1 N RSENSE - Frequency Select Pin. Oscillator frequency is 640kHz when FREQ connects to GND, and 1.2MHz when FREQ connects to VIN. - Soft-Start Control Pin. Connect a soft-start capacitor to this pin. A 4µ ...
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... DC/DC converter with current-mode PWM control architecture. By selecting appropriate circuit components, it can achieve fast transient response. The AIC1880 can regulate its output voltage through a feedback control circuit, which is composed of an error amplifier; two comparators and several control signal generators. By comparing the voltage at FB pin to the reference voltage of 1 ...
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... Output Voltage Programming V ⎜ ⎜ ⎟ ⎟ − ⋅ ⎝ ⎠ By connecting a resistive divider R OUT voltage of AIC1880 step-up converter can be set. V can be calculated as will cause the switching T D ⎛ ⎞ ⎜ ⎜ ⎟ ⎟ = − + OUT ...
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... In order to obtain better transient per- formance necessary to adjust the component val- ues of external compensation network. Layout Consideration In order to ensure a proper operation of AIC1880, the following points should be managed comprehensively. 1. The input capacitor and V close as possible to each other to reduce the input ripple voltage ...
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... SS COMP Css Rcomp AIC1880 0.047uF 22k Ccomp 1500pF Fig. 12 TFT LCD Bias Supply BAT54S C12 Vout3 0.1uF -9V/10mA C13 1uF Vout1 10V/200m Cout1 10uF R1 1.6M R2 220k =3. BAT54S Vout3 C13 -9V/10mA 1uF Vout1 10V/200mA Cout1 10uF R1 1.6M R2 220k =5.0V IN AIC1880 10 ...
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... SEE VIEW SECTION A-A AIC1880 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° ...