MP1580HS-LF-Z MPS, MP1580HS-LF-Z Datasheet
MP1580HS-LF-Z
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MP1580HS-LF-Z Summary of contents
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... Frequency Synchronization Input • Available in an 8-Pin SO Package APPLICATIONS • Distributed Power Systems • Battery Chargers Dimensions • Pre-Regulator for Linear Regulators “MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc. C5 10nF OUTPUT SW 2. ...
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... GND 4 5 MP1580_PD01-SOIC8 Part Number* Package MP1580HS SOIC8 * For Tape & Reel, add suffix –Z (eg. MP1580HS–Z) For Lead Free, add suffix –LF (eg. MP1580HS –LF–Z) ABSOLUTE MAXIMUM RATINGS Supply Voltage (V )..................................... 27V IN Switch Voltage (V ).................. – Bootstrap Voltage (V ) ....................... V BS Feedback Voltage (V ) .................– ...
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... Synchronization Input. This pin is used to synchronize the internal oscillator frequency to 8 SYNC an external source. There is an internal 11kΩ pull down resistor to GND; therefore leave SYNC unconnected if unused. MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER (continued) Symbol Condition ...
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... FOLDBACK COMPARATOR MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER MP1580 reverts to its initial M1 off, M2 on, state. If the Current Sense Amplifier plus Slope Compensation signal does not exceed the COMP voltage, then the falling edge of the CLK resets the Flip-Flop ...
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... MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER A good rule for determining the inductance is to allow the peak-to-peak ripple current in the inductor to be approximately 30% of the maximum load current ...
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... LC filter and f is the oscillator frequency. MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER In the case of tantalum or low-ESR electrolytic capacitors, the ESR dominates the impedance at the oscillator frequency, therefore the output ...
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... A good rule of thumb is to set the crossover frequency to approximately 1/10 of the switching frequency. MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER In this case, the switching frequency is 380KHz, so use a crossover frequency, f Lower crossover frequencies result in slower response and worse transient load recovery ...
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... MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER compensation Negative Output Voltage The MP1580 can be configured as a buck- boost regulator to supply negative output voltage. Because the GND pin of the IC is now ≥ ...
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... NOT USED Figure 3—Application Circuit for -5V Supply INPUT 4.75V to 20V OFF ON OPEN NOT USED Figure 4—MP1580 with Murata 22µF/10V Ceramic Output Capacitor MP1580 Rev. 3.0 10/10/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1580 – 2A, 380KHz STEP-DOWN CONVERTER C5 10nF ...
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... NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. 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. ...