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ISL62881B Datasheet(PDF) 6 Page - Intersil Corporation |
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ISL62881B Datasheet(HTML) 6 Page - Intersil Corporation |
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6 / 35 page  6 FN6924.1 February 25, 2010 POWER GOOD AND PROTECTION MONITORS PGOOD Low Voltage VOL IPGOOD = 4mA 0.26 0.4 V PGOOD Leakage Current IOH PGOOD = 3.3V -1 1 µA PGOOD Delay tpgd CLK_ENABLE# LOW to PGOOD HIGH 6.3 7.6 8.9 ms UGATE DRIVER UGATE Pull-Up Resistance (Note 6) RUGPU 200mA Source Current 1.0 1.5 Ω UGATE Source Current (Note 6) IUGSRC BOOT - UGATE = 2.5V 2.0 A UGATE Sink Resistance (Note 6) RUGPD 250mA Sink Current 1.0 1.5 Ω UGATE Sink Current (Note 6) IUGSNK UGATE - PHASE = 2.5V 2.0 A LGATE DRIVER For ISL62881 LGATE Pull-Up Resistance (Note 6) RLGPU 250mA Source Current 1.0 1.5 Ω LGATE Source Current (Note 6) ILGSRC VCCP - LGATE = 2.5V 2.0 A LGATE Sink Resistance (Note 6) RLGPD 250mA Sink Current 0.5 0.9 Ω LGATE Sink Current (Note 6) ILGSNK LGATE - VSSP = 2.5V 4.0 A UGATE to LGATE Deadtime tUGFLGR UGATE falling to LGATE rising, no load 23 ns LGATE to UGATE Deadtime tLGFUGR LGATE falling to UGATE rising, no load 28 ns LGATE DRIVERS For ISL62881B LGATEa and b Pull-Up Resistance (Note 6) RLGPU 250mA Source Current 2.0 3 Ω LGATEa and b Source Current (Note 6) ILGSRC VCCP - LGATEa and b = 2.5V 1.0 A LGATEa and b Sink Resistance (Note 6) RLGPD 250mA Sink Current 1 1.8 Ω LGATEa and b Sink Current (Note 6) ILGSNK LGATEa and b - VSSP = 2.5V 2.0 A UGATE to LGATEa and b Deadtime tUGFLGR UGATE falling to LGATEa and b rising, no load 23 ns LGATEa and b to UGATE Deadtime tLGFUGR LGATEa and b falling to UGATE rising, no load 28 ns BOOTSTRAP DIODE Forward Voltage VF PVCC = 5V, IF = 2mA 0.58 V Reverse Leakage IR VR = 25V 0.2 µA PROTECTION Overvoltage Threshold OVH VSEN rising above setpoint for >1ms 150 200 240 mV Severe Overvoltage Threshold OVHS VSEN rising for >2µs 1.525 1.55 1.575 V OC Threshold Offset ISUM- pin current 8.2 10.1 12 µA Undervoltage Threshold UVf VSEN falling below setpoint for >1.2ms -355 -295 -235 mV LOGIC THRESHOLDS VR_ON Input Low VIL(1.0V) 0.3 V Electrical Specifications Operating Conditions: VDD = 5V, TA = -10°C to +100°C, fSW = 300kHz, unless otherwise noted. Boldface limits apply over the operating temperature range, -10°C to +100°C. (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN (Note 7) TYP MAX (Note 7) UNITS ISL62881, ISL62881B |
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