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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MP8869 датащи(PDF) 4 Page - Monolithic Power Systems |
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MP8869 датащи(HTML) 4 Page - Monolithic Power Systems |
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4 / 37 page  MP8869 – 17V, 12A, SYNCHRONOUS STEP-DOWN CONVERTER MP8869 Rev.1.0 www.MonolithicPower.com 4 6/8/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN = 12V, TJ = -40°C to +125°C (5), typical value is tested at T J = +25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Supply current (shutdown) IIN VEN = 0V 2.1 4 μA Supply current (quiescent) Iq No switching, FB = 105% Vref, PFM mode 420 600 μA HS switch on resistance HSRDS(ON) VBST - SW = 3.3V 15 mΩ LS switch on resistance LSRDS(ON) VCC = 3.3V 4.5 mΩ Switch leakage SWLKG VEN = 0V, VSW = 12V, TJ = +25°C 1 μA Low-side valley current limit ILIMIT_L Adjustable by I 2C 14 A Low-side negative current limit ILIMIT_LN In forced PWM mode or OVP state -5 A Low-side ZCD threshold IZCD TJ = +25°C 200 mA Switching frequency fSW1 VIN = 12V, VOUT = 1V 400 500 600 kHz fSW2 VIN = 12V, VOUT = 5V 400 500 600 kHz Minimum off time (6) τ OFF_MIN 185 ns Minimum on time (6) τ ON_MIN VOUT = 0.6V 50 ns Reference voltage Vref TJ = 25°C 594 600 606 mV -40°C < TJ < 125°C (5) 591 600 609 FB current IFB VOUT = 620mV 10 50 nA A0 voltage threshold 1 VADD_1 Set I 2C address 60H 0.24 VCC A0 voltage threshold 2 VADD_2 Set I 2C address 62H 0.28 0.49 VCC A0 voltage threshold 3 VADD_3 Set I 2C address 64H 0.53 0.72 VCC A0 voltage threshold 4 VADD_4 Set I 2C address 66H 0.77 VCC A0 to GND pull-down resistor RA0_PD 2 MΩ EN rising threshold VEN_RISING 1.1 1.2 1.3 V EN threshold hysteresis VEN_HYS 110 mV EN to GND pull-down resistor REN 1.5 MΩ VIN under-voltage lockout threshold rising INUVVth 3.9 4.1 4.3 V VIN under-voltage lockout threshold hysteresis INUVHYS 545 mV Power good UV threshold rising PGVth-Hi Good 0.86 0.9 0.94 VOUT Power good UV threshold falling PGVth-Lo Fault 0.81 0.85 0.89 VOUT Power good OV threshold rising PGVth-Hi Fault 1.11 1.15 1.19 VOUT Power good OV threshold falling PGVth-Lo Good 1.01 1.05 1.09 VOUT Power good deglitch time PGTd I 2C programmable 30 μs Power good sink current capability VPG Sink 4mA 0.4 V |
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