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MC33470DWR2G 数据表(PDF) 3 Page - ON Semiconductor |
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MC33470DWR2G 数据表(HTML) 3 Page - ON Semiconductor |
3 / 15 page MC33470 http://onsemi.com 3 ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, PVCC , = 12 V for typical values TA = Low to High [Notes 2, 3, 4], for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit OSCILLATOR Frequency (VCC = 4.5 to 5.5 V) fosc 210 300 390 kHz FEEDBACK AMPLIFIER Voltage Feedback Input Threshold (Note 5) VID0, VID1, VID2 and VID4 = “1” and VID3 = “0” VID4 = “1” and VID0, VID1, VID2 and VID3 = “0” Vsense 1.764 2.744 3.43 1.8 2.8 3.5 1.836 2.856 3.57 V Input Bias Current (VCM = 2.8 V) IIB − 20 − mA Transconductance (VCM = 2.8 V, VCOMP = 2.0 V) GM 400 800 1200 mmho Open Loop Voltage Gain (VCOMP = 2.0 V) AVOL − 67 − dB Output Line Regulation (VCC = 4.5 to 5.5 V) Regline − 7.0 − mV Output Load Regulation Regload − 5.0 − mV Output Current Source Sink IOH IOL − − 120 120 − − mA PWM SECTION Duty Cycle at G1 Output Maximum Minimum DCmax DCmin 77 − 88 − 95 0 % Propagation Delay Comp Input to G1 Output, TJ = 25°C Comp Input to G2 Output, TJ = 25°C tPLH1 tPLH2 − − 0.1 0.1 − − ms SOFT−START SECTION Charge Current (VSoft−Start = 0 V) Ichg 7.0 10 13 mA Discharge Current under Current Limit (Note 6) (VSoft−Start = 2.0 V, Vsense = Vout, Vimax = VCC, Vifb = 0 V) ISSIL 30 90 150 mA Discharge Current under Hard Current Limit (VSoft−Start = 2.0 V, Vsense < Vout/2, Vimax = VCC, Vifb = 0 V) ISSHIL 40 64 − mA Hard Current Limit Hold Time tSSHIL 100 200 300 ms IMAX INPUT Sink Current (Vin max = VCC, Vifb = VCC) IOL 133 190 247 mA POWER GOOD OUTPUT Threshold For Logic “1” to “0” Transition Upper Threshold Lower Threshold Vth − 0.93 1.04 0.96 1.07 − Vsense Response Time Logic “0” to “1” (Vsense changes from 0 V to VO) Logic “1” to “0” (Vsense changes from VO to 0 V) trPG 200 50 400 100 600 150 ms Sink Current (VOL = 0.5 V) IOLPG − 10 − mA Output Low Voltage (IOL = 100 mA) (Note 7) VOLPG − 250 500 mV FAULT OUTPUT Threshold For Logic “0” to “1” Transition VthF 1.12 1.14 1.2 Vref Vsense Response Time Switches from 2.8 V to VCC trF 50 100 150 ms Sink Current (VOL = 0.5 V) IOLF − 10 − mA 2. Maximum package power dissipation limits must be observed. 3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 4. VID1, VID3, VID4 = logic 0, and VID0, VID2 = logic 1. 5. Vsense is provided from a low impedance voltage source or shorted to the output voltage. 6. Under a typical soft current limit, the net soft−start discharge current will be 90 mA (ISSIL) − 10 mA (Ichg) = 80 mA. The soft−start sink to source current ratio is designed to be 9:1. 7. Sense (Pin 6) = 5.0 V, Comp (Pin 10) open, VID4, VID2, VID1, VID0 = 1.0, VID3 = 0. PV CC |
类似零件编号 - MC33470DWR2G |
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类似说明 - MC33470DWR2G |
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