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ADP2370ACPZ-5.0-R7 bảng dữ liệu(PDF) 3 Page - Analog Devices |
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ADP2370ACPZ-5.0-R7 bảng dữ liệu(HTML) 3 Page - Analog Devices |
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3 / 32 page  Data Sheet ADP2370/ADP2371 Rev. A | Page 3 of 32 SPECIFICATIONS VIN = VOUT + 1 V or 3.2 V, whichever is greater, EN = VIN, IOUT = 100 mA, CIN = 10 μF, COUT = 10 µF, TA = 25°C for typical specifications, TJ = −40°C to +125°C for minimum/maximum specifications, unless otherwise noted. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit SUPPLY Input Voltage Range VIN 3.2 15 V Quiescent Current IQ-PSM FSEL = VIN, SYNC = 0 V, no load, device not switching 13.5 μA IQ-PWM FSEL = VIN, SYNC = VIN, no load, device not switching 725 μA ISW-PWM FSEL = VIN, SYNC = VIN, no load, device switching 5.7 mA Shutdown Current ISHUT EN = GND, TJ = −40°C to +85°C 1.2 3.5 μA FIXED OUTPUT Output Current IOUT 800 mA Fixed Output Accuracy VOUT Initial set point, IOUT = 250 mA, TJ = 25°C −1 +1 % IOUT = 250 mA −1.5 +1.5 % No load to full load, PWM mode −3 +3 % ADJUSTABLE OUTPUT Feedback Voltage VFB 0.8 V Feedback Voltage Accuracy VFB-TOL Initial set point, IOUT = 250 mA, TJ = 25°C −1 +1 % Output Voltage Range VOUT-ADJ No load to full load 0.8 14 V FIXED AND ADJUSTABLE OUTPUT Load Regulation ∆VOUT/∆IOUT No load to full load 0.125 %/A Line Regulation ∆VOUT/∆VIN IOUT = 250 mA 0.01 %/V Efficiency EFF IOUT = 250 mA, VIN = 7.2 V, VOUT = 3.3 V 92 % Overcurrent Frequency Foldback Threshold Rising OCFOLDBACK-RISE % of VOUT, VOUT rising 50 % Falling OCFOLDBACK-FALL % of VOUT, VOUT falling 37.5 % PSM Threshold PSMTHRESHOLD VIN = 7.2 V, VOUT = 3.3 V 170 mA Feedback Pin Input Current Fixed IFB-FIXED Fixed output voltage model 2.5 μA Adjustable IFB-ADJUST Adjustable output voltage model 10 nA Minimum On Time ON-TIMEMIN VIN < 5.5 V 65 100 ns VIN > 5.5 V 40 60 ns Soft Start Time SSTIME When EN rises from 0 V to VIN, and VOUT = 0.9 × VOUT 350 μs Active Pull-Down Resistance (ADP2371) RPULL-DOWN 260 400 Ω POWER SWITCH P-Channel On Resistance RDSON-P VIN > 5.5 V, IOUT = 400 mA 400 mΩ VIN < 5.5 V, IOUT = 400 mA 500 mΩ N-Channel On Resistance RDSON-N VIN > 5.5 V, IOUT = 400 mA 280 mΩ VIN < 5.5 V, IOUT = 400 mA 400 mΩ Current Limit P-Channel ILIM-P Peak inductor current 1200 1300 mA N-Channel ILIM-N Peak inductor current 500 550 mA Leakage Current ILEAK-SW P-Channel 0.01 1 μA N-Channel 0.01 1 μA OSCILLATOR Oscillator Frequency fOSC FSEL = VIN, 3.2 V ≤ VIN ≤ 15 V 1.0 1.2 1.4 MHz FSEL = 0 V, 3.2 V ≤ VIN ≤ 15 V 500 600 700 kHz |
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