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MP2233 Scheda tecnica(PDF) 3 Page - Monolithic Power Systems |
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MP2233 Scheda tecnica(HTML) 3 Page - Monolithic Power Systems |
3 / 18 page MP2233 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS MP2233 Rev. 1.01 www.MonolithicPower.com 3 12/6/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN = 12V, TA = 25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Supply Current (Shutdown) IIN VEN = 0V 1 μA Supply Current (Quiescent) Iq VEN = 2V, VFB = 1V 0.8 1 mA HS-Switch ON Resistance HSRDS-ON VBST-SW=5V 80 mΩ LS-Switch ON Resistance LSRDS-ON VCC=5V 30 mΩ Switch Leakage SWLKG VEN = 0V, VSW =12V 1 μA Current Limit (6) ILIMIT Under 40% Duty Cycle 4 4.6 A Oscillator Frequency fSW 1100 1400 1700 kHz Fold-back Frequency fFB VFB= 0V 0.15 fSW Maximum Duty Cycle (6) DMAX VFB=700mV 89 % Minimum ON Time (6) τON_MIN 40 ns Sync Frequency Range fSYNC 0.3 3 MHz TA=25°C 784 800 816 Feedback Voltage VFB -40°C<TA<85°C (7) 780 800 820 mV Feedback Current IFB VFB=820mV 10 50 nA EN Rising Threshold VEN_RISING 1.2 1.4 1.6 V EN Falling Threshold VEN_FALLING 1.1 1.25 1.4 V VEN=2V 2 μA EN Input Current IEN VEN=0 0 μA EN Turn Off Delay ENTd-off 5 μs VIN Under-Voltage Lockout Threshold-Rising INUVVth 3.7 3.9 4.1 V VIN Under-Voltage Lockout Threshold-Hysteresis INUVHYS 650 mV VCC Regulator VCC 5 V VCC Load Regulation ICC=5mA 3 % Soft-Start Current ISS 10 14 18 μA Thermal Shutdown (6) 150 °C Thermal Hysteresis (6) 20 °C Notes: 6) Guaranteed by design. 7) Not tested in production and guaranteed by over-temperature correlation. |
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