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MAX1904EAI Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX1904EAI Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 33 page 500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (V+ = 15V, both PWMs on, SYNC = VL, VL load = 0, REF load = 0, SKIP = 0, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER CONDITIONS MIN TYP MAX UNITS FAULT DETECTION (MAX1901/MAX1902) Overvoltage Trip Threshold With respect to unloaded output voltage 4 7 10 % Overvoltage Fault Propagation Delay CSL_ driven 2% above overvoltage trip threshold 1.5 µs Output Undervoltage Threshold With respect to unloaded output voltage 60 70 80 % Output Undervoltage Lockout Time From each SMPS enabled, with respect to fOSC 5,000 6,144 7,000 clks Thermal-Shutdown Threshold Typical hysteresis = 10°C 150 °C RESET RESET Trip Threshold With respect to unloaded output voltage, falling edge; typical hysteresis = 1% -7 -5.5 -4 % RESET Propagation Delay Falling edge, CSL_ driven 2% below RESET trip threshold 1.5 µs RESET Delay Time With respect to fOSC 27,000 32,000 37,000 clks INPUTS AND OUTPUTS Feedback-Input Leakage Current FB3, FB5; SECFB = 2.6V 1 50 nA Logic Input-Low Voltage RUN/ON3, SKIP, TIME/ON5 (SEQ = REF), SHDN, STEER, SYNC 0.6 V Logic Input-High Voltage RUN/ON3, SKIP, TIME/ON5 (SEQ = REF), SHDN, STEER, SYNC 2.4 V Input Leakage Current RUN/ON3, SKIP, TIME/ON5 (SEQ = REF), SHDN, STEER, SYNC, SEQ; VPIN = 0V or 3.3V ±1µA Logic Output-Low Voltage RESET, ISINK = 4mA 0.4 V Logic Output-High Current RESET = 3.5V 1 mA TIME/ON5 Input Trip Level SEQ = 0 or VL 2.4 2.6 V TIME/ON5 Source Current TIME/ON5 = 0, SEQ = 0 or VL 2.5 3 3.5 µA TIME/ON5 On-Resistance TIME/ON5; RUN/ON3 = 0, SEQ = 0 or VL 15 80 Ω Gate-Driver Sink/Source Current DL3, DH3, DL5, DH5; forced to 2V 1 A SSOP package 1.5 7 Gate-Driver On-Resistance High or low (Note 6) QFN package 1.5 8 Ω |
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