MP1542 MPS, MP1542 Datasheet
MP1542
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MP1542 Summary of contents
Page 1
... Monolithic Power Systems DESCRIPTION The MP1542 is a current mode step up converter with a 2A, 0.18Ω internal switch to provide a highly efficient regulator with fast response. The MP1542 can be operated at 700KHz or 1.3MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting loop dynamics, which allows the use of small, low- ESR ceramic output capacitors ...
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... TOP VIEW COMP GND 4 Part Number* Package MP1542DK MSOP8 For Tape & Reel, add suffix –Z (eg. MP1542DK–Z) * For Lead Free, add suffix –LF (eg. MP1542DK–LF–Z) ELECTRICAL CHARACTERISTICS 5V 25°C, unless otherwise noted Parameter Symbol Condition ...
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... TEMPERATURE (°C) MP1542-TPC01 Frequency (1.3MHz) vs Temperature 1.28 1.26 1.24 1.22 1.20 1.18 1.16 1.14 -45 - 105125145 TEMPERATURE (°C) 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH Efficiency vs Load Current OUT 50 1000 1 10 ...
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... TYPICAL PERFORMANCE CHARACTERISTICS Circuit on front page 3.3V 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH = 8V, unless otherwise noted. OUT MPS Proprietary Information. © 2005 All Rights Reserved. Unauthorized Photocopy and Duplication Prohibited. INITIAL RELEASE (continued) 4 ...
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... The MP1542 uses a constant frequency, peak current mode boost regulation architecture to regulate the feedback voltage. INTERNAL REGULATOR EN AND ENABLE CIRCUITRY OSCILLATOR FSEL SS 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH The understood by referring to the block diagram of Figure PWM CONTROL LOGIC -- Figure 1— ...
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... R2 of the voltage divider. Determine the high-side resistor R1 by the equation: 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH off the switch forcing the inductor current to the output capacitor through the external rectifier. This causes the inductor current to decrease. ...
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... A larger value inductor results in less ripple current that results in lower peak inductor 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH current, N-Channel.switch. However, the larger value inductor has a larger physical size, higher series resistance, and/or lower saturation current ...
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... Ceramic capacitors have extremely low ESR, therefore the second compensation capacitor (from COMP to GND) is not required. 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH V (V) 3.3 3.3 set by the P2 3 ...
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... OFF ON Figure 3—Multiple-Output, Low-Profile (1.2mm max) TFT LCD Power Supply 01/05, Rev. 1.0 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH noise. All components must be placed as close to the IC as possible. Keep the path between the SW pin, output diode, output capacitor and GND pin extremely short for minimal noise and ringing ...
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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. MP1542 Rev. 1.0 1/14/05 MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH MSOP8 SEE DETAIL "A" 0.114(2.900) ...