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NCP5424D Datasheet(PDF) 4 Page - ON Semiconductor |
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NCP5424D Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 18 page NCP5424 http://onsemi.com 4 ELECTRICAL CHARACTERISTICS (0 °C < TA < 70°C; 0°C < TJ < 125°C; ROSC = 30.9 k, CCOMP1,2 = 0.1 mF, 10.8 V < VCC < 13.2 V; 10.8 V < BST < 20 V, CGATE(H)1,2 = CGATE(L)1,2 = 1.0 nF, VFB+2 = 1.0 V; unless otherwise specified.) Characteristic Test Conditions Min Typ Max Unit Error Amplifier VFB Bias Current VFBX = 0 V − 0.5 1.6 mA VFB1(2) Input Range Note 2 0 − 1.1 V COMP1,2 Source Current COMP1,2 = 1.2 V to 2.5 V; VFB1(−2) = 0.8 V 15 30 60 mA COMP1,2 Sink Current COMP1,2 = 1.2 V; VFB1(−2) = 1.2 V 15 30 60 mA Reference Voltage 1(2) COMP1 = VFB1; COMP2 = VFB−2 0.980 1.000 1.020 V COMP1,2 Max Voltage VFB1(−2) = 0.8 V 3.0 3.3 − V COMP1,2 Min Voltage VFB1(−2) = 1.2 V − 0.25 0.35 V Open Loop Gain − − 95 − dB Unity Gain Band Width − − 40 − kHz PSRR @ 1.0 kHz − − 70 − dB Transconductance − − 32 − mmho Output Impedance − − 2.5 − M W Input Offset, Error Amp. 2 − −3.0 0 3.0 mV Error Amp. 2 Common Mode Range Note 2 1.75 2.0 − V GATE(H) and GATE(L) High Voltage (AC) Measure: VCC − GATE(L)1,2; BST − GATE(H)1,2; Note 2 − 0 0.5 V Low Voltage (AC) Measure:GATE(L)1,2 or GATE(H)1,2; Note 2 − 0 0.5 V Rise Time 1.0 V < GATE(L)1,2 < VCC − 1.0 V 1.0 V < GATE(H)1,2 < BST − 1.0 V, BST ≤ 14 V − 20 50 ns Fall Time VCC − 1.0 > GATE(L)1,2 > 1.0 V BST − 1.0 > GATE(H)1,2 > 1.0 V, BST ≤ 14 V − 15 50 ns GATE(H) to GATE(L) Delay GATE(H)1,2 < 2.0 V, GATE(L)1,2 > 2.0 V BST ≤ 14 V 20 40 70 ns GATE(L) to GATE(H) Delay GATE(L)1,2 < 2.0 V, GATE(H)1,2 > 2.0 V; BST ≤ 14 V 20 40 70 ns GATE(H)1(2) and GATE(L)1(2) pull−down. Resistance to GND Note 2 50 125 280 k W PWM Comparator PWM Comparator Offset VFB1(−2) = 0 V; Increase COMP1,2 until GATE(H)1,2 starts switching 0.30 0.40 0.50 V Artificial Ramp Duty cycle = 50%, Note 2 60 105 150 mV Minimum Pulse Width Note 2 − − 300 ns 2. Guaranteed by design, not 100% tested in production. |
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