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MAX1854 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX1854 Datasheet(HTML) 4 Page - Maxim Integrated Products |
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4 / 33 page  High-Speed, Adjustable, Synchronous Step-Down Controllers with Integrated Voltage Positioning 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 1, V+ = +15V, VCC = VDD = 5V, SKIP = VCC, VPS = PGND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VGATE Lower Trip Threshold Measured at FB with respect to unloaded output voltage, falling edge -12.5 -10 -7.5 % VGATE Upper Trip Threshold Measured at FB with respect to unloaded output voltage, rising edge 7.5 10 12.5 % VGATE Propagation Delay Falling edge, FB forced 2% below or above VGATE trip threshold 1.5 µs VGATE Output Low Voltage ISINK = 1mA 0.4 V VGATE Leakage Current High state, forced to 5.5V 1 µA GATE DRIVERS DH Gate Driver On-Resistance RON(DH) VBST - VLX forced to 5V 1.3 5 Ω High state (pullup) 1.5 5 DL Gate Driver On-Resistance RON(DL) Low state (pulldown) 0.5 1.7 Ω DH Gate Driver Source/Sink Current IDH DH forced to 2.5V, VBST - VLX forced to 5V 1 A DL Gate Drive Sink Current IDL DL forced to 5V 3 A DL Gate Driver Source Current IDL DL forced to 2.5V 1 A DL rising 35 Dead-Time DH rising 26 ns LOGIC AND I/O Logic Input High Voltage VIH D0 −D4, SHDN, SKIP 2.4 V Logic Input Low Voltage VIL D0 −D4, SHDN, SKIP 0.8 V TON = VCC (200kHz operation) VCC - 0.4 TON = open (300kHz operation) 3.15 3.85 TON = REF (400kHz operation) 1.65 2.35 TON Input Levels TON = GND (550kHz operation) 0.5 V TON = GND or VCC -3 3 Logic Input Current SHDN, SKIP = GND or VCC -1 1 µA D0 −D4 Pullup Current D0 −D4 = GND 3 5 10 µA SKIP No-Fault Mode Current TA = +25°C -1.5 -0.1 mA |
Similar Part No. - MAX1854 |
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Similar Description - MAX1854 |
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