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MAX8855 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX8855 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 20 page Dual, 5A, 2MHz Step-Down Regulators 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VIN_ = VVDD = VVDL = 3.3V, VFB_ = 0.5V, VSS_ = VREFIN = 600mV, PGND_ = GND, RFSYNC = 10kΩ, L = 0.47µH, CBST_ = 0.1µF, CSS_ = 0.022µF, PWRGD_ not connected; TA = -40°C to +85°C, typical values are at TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS EN1, EN2 EN_ Logic-Low 0.7 V EN_ Logic-High 1.7 V TA = +25 °C-1 +1 EN_ Input Current VEN_ = 0 or 3.6V, VVDD = 3.6V TA = +85 °C 0.01 µA SS1, SS2 SS_ Charging Current VSS_ = 300mV 5 8 11 µA REFIN, SS2 Discharge Resistance In shutdown or a fault condition 335 Ω THERMAL SHUTDOWN Thermal-Shutdown Threshold (Independent Channels) +165 °C Thermal-Shutdown Hysteresis 20 °C Note 2: All devices 100% production tested at TA = +25°C. Limits over temperature are guaranteed by design. Note 3: VVDD must equal VVDL and be equal to or greater than VIN_. EFFICIENCY vs. LOAD CURRENT WITH 3.3V INPUT LOAD CURRENT (mA) 1000 10 20 30 40 50 60 70 80 90 100 0 100 10,000 VOUT_ = 2.5V VOUT_ = 1.2V VOUT_ = 1.8V EFFICIENCY vs. LOAD CURRENT WITH 2.5V INPUT LOAD CURRENT (mA) 1000 10 20 30 40 50 60 70 80 90 100 0 100 10,000 VOUT_ = 1.2V VOUT_ = 1.8V SWITCHING FREQUENCY vs. RFSYNC RFSYNC (k Ω) 12 600 800 1000 1200 1400 1600 1800 2000 2200 2400 400 36 9 15 18 21 Typical Operating Characteristics (VIN1 = VIN2 = 3.3V, MAX8855/MAX8855A, circuit of Figure 6, TA = +25°C, unless otherwise noted.) |
Similar Part No. - MAX8855_11 |
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Similar Description - MAX8855_11 |
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