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MAX1540A Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1540A Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 49 page Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator _______________________________________________________________________________________ 5 ELECTRICAL CHARACTERISTICS (continued) (V+ = 15V, VCC = VDD = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25 °C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS REFERENCE (REF) TA = +25°C to +85 °C 1.986 2.00 2.014 Reference Voltage VREF VCC = 4.5V to 5.5V, IREF = 0V TA = 0°C to +85°C 1.983 2.00 2.017 V Reference Load Regulation ΔVREF IREF = -10µA to +50µA -0.01 +0.01 V REF Lockout Voltage VREF(UVLO) Rising edge, hysteresis = 350mV 1.95 V REFIN1 (MAX1541) Voltage Range VREFIN 0.7 VREF V REFIN1 (MAX1541) Input Bias Current IREFIN1 0.01 0.05 µA FAULT DETECTION Overvoltage Trip Threshold With respect to error-comparator threshold, OVP/UVP = VCC 12 16 20 % Overvoltage Fault-Propagation Delay tOVP FB forced 2% above trip threshold 10 µs Output Undervoltage-Protection Trip Threshold With respect to error-comparator threshold, OVP/UVP = VCC 65 70 75 % Output Undervoltage-Protection Blanking Time tBLANK From rising edge of ON_ 10 35 ms Output Undervoltage Fault- Propagation Delay tUVP 10 µs PGOOD_ Lower Trip Threshold With respect to error-comparator threshold, hysteresis = 1% -13 -10 -7 % PGOOD_ Upper Trip Threshold With respect to error-comparator threshold, hysteresis = 1% +7 +10 +13 % PGOOD_ Propagation Delay tPGOOD_ FB forced 2% beyond PGOOD_ trip threshold 10 µs PGOOD_ Output Low Voltage ISINK = 4mA 0.3 V PGOOD_ Leakage Current IPGOOD_ FB = REF (PGOOD high impedance), PGOOD forced to 5.5V 1µA FBLANK = VCC 120 220 320 FBLANK = open 80 140 205 Fault-Blanking Time (MAX1541 Only) tFBLANK FBLANK = REF 35 65 95 µs LDOON = VCC +150 Thermal-Shutdown Threshold TSHDN Hysteresis = 10°C LDOON = GND +160 °C VCC Undervoltage-Lockout Threshold VUVLO(VCC) Rising edge, PWM disabled below this level, hysteresis = 20mV 4.1 4.25 4.4 V CURRENT LIMIT ILIM_ Adjustment Range 0.25 2 V CSP_ 0 2.7 Current-Limit Input Range CSN_ -0.3 +28 V CSP_/CSN_ Input Current 0.5 µA |
Similar Part No. - MAX1540A |
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Similar Description - MAX1540A |
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