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NCP81274MNTXG Datasheet(PDF) 7 Page - ON Semiconductor |
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NCP81274MNTXG Datasheet(HTML) 7 Page - ON Semiconductor |
7 / 26 page NCP81274 www.onsemi.com 7 Table 4. ELECTRICAL CHARACTERISTICS (continued) (Unless otherwise stated: −10 °C < TA < 100°C; 4.6 V < VCC < 5.4 V; CVCC = 0.1 mF) Parameter Unit Max Typ Min Symbol Test Conditions PGOOD Output Low Voltage IPGOOD = 10 mA (Sink) VOL 0.4 V Leakage Current PGOOD = 5 V IL 0.2 mA Output Voltage Initialization Time T_init 1.5 ms Minimum Output Voltage Ramp Time T_rampMIN 0.15 ms Maximum Output Voltage Ramp Time T_rampMAX 10 ms PROTECTION-OCP, OVP, UVP Under Voltage Protection (UVP) Threshold Relative to REFIN Voltage UVP 300 mV Under Voltage Protection (UVP) Delay TUVP 5 ms Over Voltage Protection (OVP) Threshold Relative to REFIN Voltage OVP 400 mV Over Voltage Protection (OVP) Delay TOVP 5 ms PWM OUTPUTS Output High Voltage Sourcing 500 mA VOH VCC − 0.2 V Output Mid Voltage VMID 1.9 2.0 2.1 V Output Low Voltage Sinking 500 mA VOL 0.7 V Rise and Fall Time CL(PCB) = 50 pF, DVO = 10% to 90% of VCC tR, tF 10 ns Tri-state Output Leakage Gx = 2.0 V, x = 1−8, EN = Low IL −1.0 1.0 mA Minimum On Time FSW = 600 kHz Ton 12 ns 0% Duty Cycle Comp Voltage when PWM Outputs Remain LOW VCOMP0% 1.3 V 100% Duty Cycle Comp Voltage when PWM Outputs Remain HIGH VCOMP100% 2.5 V PWM Phase Angle Error Between Adjacent Phases ø ±15 ° PHASE DETECTION Phase Detection Threshold Voltage CSP2 to CSP8 VPHDET VCC − 0.1 V Phase Detect Timer CSP2 to CSP8 TPHDET 1.1 ms ERROR AMPLIFIER Input Bias Current IBIAS −400 400 nA Open Loop DC Gain CL = 20 pF to GND, RL = 10 kW to GND GOL 80 dB Open Loop Unity Gain Bandwidth CL = 20 pF to GND, RL = 10 kW to GND GBW 20 MHz Slew Rate DVIN = 100 mV, G = −10 V/V, DVOUT = 0.75–1.52 V, CL = 20 pF to GND, RL = 10 kW to GND SR 5 V/ ms Maximum Output Voltage ISOURCE = 2 mA VOUT 3.5 V Minimum Output Voltage ISINK = 2 mA VOUT 1 V |
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