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MAX1775 Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX1775 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 16 page Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VIN = +12V, VMAIN = VINC = VCS- = VCS+ = +3.3V, VCORE = +1.8V, Circuit of Figure 4, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. IN, SHDNM, CVH to GND.......................................-0.3V to +30V IN to CVH, PDRV ......................................................-0.3V to +6V PDRV to GND..................................(VCVH - 0.3V) to (VIN + 0.3V) PGND to GND .......................................................-0.3V to +0.3V All Other Pins to GND...............................................-0.3V to +6V Core Output Short Circuit...........................................Continuous Continuous Power Dissipation 16-Pin QSOP (derate 7.1mW/°C above +70°C)..........571mW Operating Temperature .......................................-40°C to +85°C Storage Temperature.........................................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage VIN 2.7 28 V Input Quiescent Supply Current IIN VFBM = +1.5V, VFBC = +1.5V, V SHDNM = V SHDNC = +3.3V 15 30 µA CS- Quiescent Supply Current ICS- VFBM = +1.5V, VFBC = +1.5V, V SHDNM = V SHDNC = +3.3V 110 220 µA Core Regulator Quiescent Supply Current IINC VFBM = +1.5V, VFBC = +1.5V, V SHDNM = V SHDNC = +3.3V 60 120 µA IN Shutdown Supply Current SHDNM = SHDNC = GND 5 30 µA MAIN REGULATOR Main Output Voltage Adjust Range 1.25 5.5 V FBM Regulation Threshold VFBM V(CS+ - CS-) = 0 to +60mV, VIN = +2.7V to +28V 1.21 1.25 1.29 V FBM Input Current IFBM VFBM = +1.3V -0.1 0.1 µA Current-Limit Threshold VCLM VCS+ - VCS- 60 80 100 mV Minimum Current-Limit Threshold VMIN VCS+ - VCS- 615 24 mV Valley Current Threshold VVALLEY VCS+ - VCS- 40 50 60 mV Zero Current Threshold VZERO VCS+ - VCS- 015 mV PDRV, NDRV Gate Drive Resistance VCS- = +3.3V, ILOAD = 50mA 2 4.4 Ω CS- to CVL Switch Resistance ICVL = 50mA 4.5 8 Ω PDRV, NDRV Dead Time 50 ns Maximum Duty Cycle 100 % Minimum On-Time 200 400 650 ns Minimum Off-Time 200 400 650 ns |
Similar Part No. - MAX1775 |
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Similar Description - MAX1775 |
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