MP2494 MPS, MP2494 Datasheet
MP2494
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MP2494 Summary of contents
Page 1
... Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The MP2494 requires a minimum number of readily available standard external components. The MP2494 is available in SOIC8 and SOIC8E package. TYPICAL APPLICATION MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. ...
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... Part Number MP2494DS* MP2494DN** * For Tape & Reel, add suffix –Z (e.g. MP2494DS–Z); For RoHS, compliant packaging, add suffix –LF (e.g. MP2494DS–LF–Z). ** For Tape & Reel, add suffix –Z (e.g. MP2494DN–Z); For RoHS, compliant packaging, add suffix –LF (e.g. MP2494DN–LF–Z). ...
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... Threshold Rising Under Voltage Lockout Threshold Hysteresis Supply Current (Shutdown) Supply Current (Quiescent) (5) Thermal Shutdown Notes: 5) Guaranteed by design MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER (5) Condition 4.5V ≤ V ≤ 55V 0.8V FB DS(ON) ...
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... Package Name Description Pin # Supply Voltage. The MP2494 operates from a +4.5V to +55V unregulated input. CIN is needed to prevent large voltage spikes from appearing at the input. Put CIN as close to 1 VIN the IC as possible the drain of the internal power device and power supply for the whole chip ...
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... Maximum I vs. OUT Duty Cycle 6.0 5.2 4.4 3.6 2.8 2.0 0% 20% 40% 60% 80% 100% MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER =22uF, L =39uH, T =25°C, unless otherwise noted Efficiency vs. Load Current V =3.3V OUT 100 V = =12V 80 IN ...
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... FREQUENCY (MHZ) V OUT 500mV/div. I OUT 1A/div. MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER =22uF, L =39uH, T =25°C, unless otherwise noted 2V/div 10V/div. V OUT 5V/div. ...
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... An external Schottky Diode (D1) carries the inductor current when SW is off. Enable Control The MP2494 has an Enable control pin (EN). Drive EN above 1.8V to turn on the MP2494. Drive EN below 0.4V to turn it off. Tie EN to VIN for automatic start up. www.MonolithicPower.com © 2010 MPS. All Rights Reserved. ...
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... EN EN REGULATOR REGULATOR ENABLE ENABLE REFERENCE REFERENCE MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER 4.0V 4.0V POR POR REGULATOR REGULATOR RAMP RAMP GENERATOR GENERATOR REGULATOR REGULATOR OSCILLATOR OSCILLATOR 150KHz 150KHz 6pF ...
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... MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER Selecting the Input Capacitor The input capacitor reduces the surge current drawn from the input and also the switching noise from the device. The input capacitor ...
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... FRONT VIEW 0.050(1.27) 0.024(0.61) 0.063(1.60) 0.103(2.62) 0.138(3.51) RECOMMENDED LAND PATTERN MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER SOIC8E 0.150(3.80) 0.228(5.80) 0.157(4.00) 0.244(6.20) SEE DETAIL "A" 0.051(1.30) 0.067(1.70) SEATING PLANE GAUGE PLANE ...
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... Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP2494 Rev. 0.9 1/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2494 –2A, 55V, 100kHz STEP-DOWN CONVERTER SOIC8 0.024(0.61) 0.063(1.60) 0.150(3.80) ...