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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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MPQ4432 Arkusz danych(PDF) 5 Page - Monolithic Power Systems |
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MPQ4432 Arkusz danych(HTML) 5 Page - Monolithic Power Systems |
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5 / 31 page  MPQ4432 - 36V, 2.2A, LOW IQ, SYNCHRONOUS STEP-DOWN CONVERTER MPQ4432 Rev. 1.0 www.MonolithicPower.com 5 9/19/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN = 12V, VEN = 2V, TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TJ = +25°C. Parameter Symbol Condition Min Typ Max Units VIN quiescent current IQ VFB = 0.85V, no load, no switching, TJ = +25°C 10 18 µA VFB = 0.85V, no load, no switching 10 25 VIN shutdown current ISHDN VEN = 0V 1 5 µA VIN under-voltage lockout threshold rising INUVRISING 2.4 2.8 3.2 V VIN under-voltage lockout threshold hysteresis INUVHYS 150 mV Feedback reference voltage VREF 784 800 816 mV TJ = 25°C 792 800 808 mV Switching frequency FSW RFREQ = 180k Ω or from sync clock 400 475 550 kHz RFREQ = 82k Ω or from sync clock 850 1000 1150 kHz RFREQ = 27k Ω or from sync clock 2250 2500 2750 kHz Minimum on time (4) TON_MIN 80 ns Sync input low voltage VSYNC_LOW 0.4 V Sync input high voltage VSYNC_HIGH 1.8 V Current limit ILIMIT_HS Duty cycle = 40% 4.1 5.2 6.7 A Low-side valley current limit ILIMIT_LS VOUT = 3.3V, L = 4.7µH 2.5 3.8 5.1 A ZCD current IZCD 0.1 A Reverse current limit ILIMIT_REVERSE 3 A Switch leakage current ISW_LKG 0.01 1 µA HS switch on resistance RON_HS VBST - VSW = 5V 90 155 mΩ LS switch on resistance RON_LS 40 75 mΩ Soft-start current ISS VSS = 0.8V 5 10 15 µA EN rising threshold VEN_RISING 0.9 1.05 1.2 V EN threshold hysteresis VEN_HYS 120 mV PG rising threshold (VFB/VREF) PGRISING VFB rising 85 90 95 % VFB falling 105 110 115 PG falling threshold (VFB/VREF) PGFALLING VFB falling 79 84 89 % VFB rising 113.5 118.5 123.5 % PG deglitch timer TPG_DEGLITCH PG from low to high 30 µs PG from high to low 50 µs PG output voltage low VPG_LOW ISINK = 2mA 0.2 0.4 V VCC regulator VCC 5 V VCC load regulation ICC = 5mA 3 % Thermal shutdown (4) TSD 170 C Thermal shutdown hysteresis (4) TSD_HYS 20 °C NOTE: 4) Not tested in production. Guaranteed by design and characterization. |
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