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MP28259DD Datasheet(PDF) 2 Page - Monolithic Power Systems |
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MP28259DD Datasheet(HTML) 2 Page - Monolithic Power Systems |
2 / 18 page MP28259 – 2A, 4.2V-20V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER MP28259 Rev. 1.34 www.MonolithicPower.com 2 4/27/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. ORDERING INFORMATION Part Number* OCP Protection Package Top Marking MP28259DD Latch-off mode QFN12 (2x3mm) AAT MP28259DD-A Hiccup mode QFN12 (2x3mm) ACX * For Tape & Reel, add suffix –Z (e.g. MP28259DD–Z). For RoHS Compliant Packaging, add suffix –LF (e.g. MP28259DD–LF–Z) PACKAGE REFERENCE GND SW BST VCC EN GND SW IN FREQ FB TOP VIEW PG GND 1 2 12 3 4 8 7 6 5 11 10 9 SW QFN12 (2x3mm) ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage VIN .......................................22V VSW ...-0.3V(-4V<10ns) to VIN + 0.3V(24V<10ns) VBST .................................................... VSW + 6V All Other Pins................................. -0.3V to +6V Continuous Power Dissipation (TA = 25°C) (2) QFN12 (2x3mm) ........................................1.8W Junction Temperature ............................. 150 °C Lead Temperature ................................... 260 °C Storage Temperature............... -65 °C to +150°C Recommended Operating Conditions (3) Supply Voltage VIN .......................... 4.2V to 20V Output Voltage VOUT.................... 0.815V to 13V Operating Junction Temp. (TJ). -40°C to +125°C Thermal Resistance (4) θJA θJC QFN12 (2x3mm) .................... 70 ...... 15... °C/W Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-to- ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. |
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