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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MP2377DN датащи(PDF) 2 Page - Monolithic Power Systems |
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MP2377DN датащи(HTML) 2 Page - Monolithic Power Systems |
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2 / 11 page  MP2377 – 3A, 21V, 600KHz STEP-DOWN CONVERTER MP2377 Rev. 0.92 www.MonolithicPower.com 2 4/19/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. PACKAGE REFERENCE Part Number* Package Temperature MP2377DN SOIC8E –40 °C to +85°C * For Tape & Reel, add suffix –Z (eg. MP2377DN–Z) For RoHS Compliant Packaging, add suffix –LF (eg. MP2377DN–LF–Z) ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage VIN....................................... 23V VSW.........................-0.3V(-5V for < 10ns) to 24V VBST - VSW .................................................... + 6V All Other Pins................................. –0.3V to +6V Junction Temperature...............................150 °C Lead Temperature ....................................260 °C Storage Temperature ..............–65 °C to +150°C Recommended Operating Conditions (2) Supply Voltage VIN........................... 4.5V to 21V Operating Temperature .............–40 °C to +85°C Thermal Resistance (3) θJA θJC SOIC8..................................... 90 ...... 45... °C/W SOIC8E .................................. 50 ...... 10... °C/W Notes: 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its operating conditions. 3) Measured on JESD51-7, 4-layer PCB. ELECTRICAL CHARACTERISTICS VIN = 12V, TA = +25°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units Feedback Voltage VFB 4.5V ≤ VIN ≤ 21V 0.788 0.808 0.828 V Feedback Current IFB VFB = 0.8V 10 nA VFB = 2V 2 µA Switch On Resistance (4) RDS(ON) 100 mΩ Switch Leakage VEN = 0V, VSW = 0V 0.1 10 µA Current Limit (4) 4 A Oscillator Frequency fSW VFB = 0.6V 600 KHz Fold-back Frequency VFB = 0V 150 KHz Maximum Duty Cycle VFB = 0.6V 85 90 % Minimum On Time (4) tON 100 ns Under Voltage Lockout Threshold Rising 3.9 4.1 4.3 V Under Voltage Lockout Threshold Hysteresis 880 mV EN Input Low Voltage 0.4 V En Input High Voltage 1.2 V EN Input Current VEN = 2V 2 µA VEN = 0V 0.01 Supply Current (Shutdown) VEN = 0V 0.1 µA Supply Current (Quiescent) VEN = 2V, VFB = 1V 0.9 mA Thermal Shutdown 150 °C Bias Supply VCC ICC = 5mA 4.5 5.0 V Power Good Threshold Rising 0.74 V Power Good Threshold Hysteresis 40 mV PG Pin Level VPG PG Sink 4mA 0.4 V Sync Frequency Range (Low) FSYNCL 300 KHz Sync Frequency Range (High) FSYNCH 1.5 MHz Enable Turnoff Delay TOFF 5.0 µS Note: 4) Guaranteed by design. SW BST VCC GND IN EN/SYNC PG FB 1 2 3 4 8 7 6 5 TOP VIEW EXPOSED PAD ON BACKSIDE |
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