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744325550 데이터시트(PDF) 3 Page - Analog Devices |
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3 / 24 page Data Sheet ADP2384 Rev. 0 | Page 3 of 24 SPECIFICATIONS VPVIN = 12 V, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit PVIN PVIN Voltage Range VPVIN 4.5 20 V Quiescent Current IQ No switching 2.1 2.9 3.6 mA Shutdown Current ISHDN EN = GND 45 80 120 µA PVIN Undervoltage Lockout Threshold UVLO PVIN rising 4.3 4.5 V PVIN falling 3.5 3.8 V FB FB Regulation Voltage VFB 0°C < TJ < 85°C 0.594 0.6 0.606 V −40°C < TJ < 125°C 0.591 0.6 0.609 V FB Bias Current IFB 0.01 0.1 µA ERROR AMPLIFIER (EA) Transconductance gm 340 470 600 µS EA Source Current ISOURCE 40 60 80 µA EA Sink Current ISINK 40 60 80 µA INTERNAL REGULATOR (VREG) VREG Voltage VVREG VPVIN = 12 V, IVREG = 50 mA 7.6 8 8.4 V Dropout Voltage VPVIN = 12 V, IVREG = 50 mA 340 mV Regulator Current Limit 65 100 135 mA SW High-Side On Resistance1 VBST − VSW = 5 V 44 70 mΩ Low-Side On Resistance1 VVREG = 8 V 11.6 20 mΩ High-Side Peak Current Limit 4.8 6.1 7.4 A Low-Side Negative Current-Limit Threshold Voltage2 20 mV SW Minimum On Time tMIN_ON 125 168 ns SW Minimum Off Time tMIN_OFF 200 260 ns BST Bootstrap Voltage VBOOT 4.5 5 5.5 V OSCILLATOR (RT PIN) Switching Frequency fSW RT = 100 kΩ 530 600 670 kHz Switching Frequency Range fSW 200 1400 kHz SYNC Synchronization Range 200 1400 kHz SYNC Minimum Pulse Width 100 ns SYNC Minimum Off Time 100 ns SYNC Input High Voltage 1.3 V SYNC Input Low Voltage 0.4 V SS Internal Soft Start 1600 Clock cycles SS Pin Pull-Up Current ISS_UP 2.5 3.2 3.9 µA PGOOD Power-Good Range FB Rising Threshold PGOOD from low to high 95 % FB Rising Hysteresis PGOOD from high to low 5 % FB Falling Threshold PGOOD from low to high 105 % FB Falling Hysteresis PGOOD from high to low 11.7 % |
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