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MAX1947ETA18 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX1947ETA18 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 10 page Low Input/Output Voltage Step-Up DC-DC Converter with RESET _______________________________________________________________________________________ 3 Note 2: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design. Note 3: When BATT is greater than the output-voltage set point, the part is in track mode (see the Track Mode section). ELECTRICAL CHARACTERISTICS (continued) (VBATT = 1.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS Startup to Normal-Mode Output Transition Voltage 50mV hysteresis, rising edge 1.40 1.62 1.73 V TA = 0°C to +85°C 600 800 1000 NFET Current Limit TA = -40°C to +85°C 580 800 1000 mA TA = 0°C to +85°C 15 75 150 PFET Turn-Off Current TA = -40°C to +85°C 10 75 150 mA MAX1947ETA18 0.3 0.6 MAX1947ETA25 0.22 0.44 MAX1947ETA30 0.17 0.34 Internal NFET On-Resistance ILX = 100mA MAX1947ETA33 0.15 0.3 Ω MAX1947ETA18 0.5 1.0 MAX1947ETA25 0.35 0.7 MAX1947ETA30 0.28 0.56 Internal PFET On-Resistance ILX = 100mA MAX1947ETA33 0.25 0.5 Ω TA = +25°C 0.1 1 LX Leakage Current SHDN = GND, VOUT = 0V, VLX = 3.6V TA = +85°C 1 µA SHUTDOWN MODE Shutdown Supply Current SHDN = GND 2 4 µA VIH 0.8 x VBATT SHDN Input Voltage VIL 0.18 x VBATT V SHDN = OUT or GND, TA = +25°C1 100 SHDN Input Bias Current SHDN = OUT or GND, TA = +85°C5 nA OUT Discharge Resistance in Shutdown SHDN = GND 500 1000 Ω RESET OUTPUT Reset OUT Voltage Trip Level VOUT falling, 1% hysteresis 87 90 93 % Minimum VOUT for Valid Reset 0.9 V Reset Timeout 65 140 235 ms ISINK = 200µA 0.3 RESET Output Voltage ISOURCE = 200µA 0.8 x VOUT V |
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