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MP1497S Datasheet(PDF) 3 Page - Monolithic Power Systems |
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MP1497S Datasheet(HTML) 3 Page - Monolithic Power Systems |
3 / 15 page MP1497S – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS MP1497S Rev. 1.01 www.MonolithicPower.com 3 9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 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 0.7 1 mA HS-Switch ON Resistance HSRDS-ON VBST-SW=5V 120 mΩ LS-Switch ON Resistance LSRDS-ON VCC=5V 50 mΩ Switch Leakage SWLKG VEN = 0V, VSW =12V 1 μA Current Limit (6) ILIMIT Under 40% Duty Cycle 4.2 5 A Oscillator Frequency fSW VFB=750mV 410 500 600 kHz Fold-back Frequency fFB VFB<400mV 0.5 fSW Maximum Duty Cycle DMAX VFB=700mV 90 95 % Minimum ON Time (7) τON_MIN 60 ns Sync Frequency Range fSYNC 0.3 2 MHz TA=25°C 791 807 823 Feedback Voltage VFB -40°C<TA<85°C (8) 787 807 827 mV Feedback Current IFB VFB=820mV 10 50 nA EN Rising Threshold VEN_RISING 1.1 1.4 1.75 V EN Falling Threshold VEN_FALLING 1 1.25 1.55 V VEN=2V 2 μA EN Input Current IEN VEN=0 0 μA EN Turn Off Delay ENTd-off 8 μs VIN Under-Voltage Lockout Threshold-Rising INUVVth 3.6 3.9 4.2 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 5 11 17 μA Thermal Shutdown (7) 150 °C Thermal Hysteresis (7) 20 °C Notes: 6) Guaranteed by characterization. 7) Guaranteed by design. 8) Not tested in production and guaranteed by over-temperature correlation. |
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