MP24875 MPS, MP24875 Datasheet
MP24875
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MP24875 Summary of contents
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... EMI (Electromagnetic Interference) noise problems. The thermal shut down provides reliable, fault tolerant operations. A 12µA quiescent current in shutdown mode allows its use in battery-powered applications. The MP24875 is available in SOIC8 with exposed pad package. TYPICAL APPLICATION C COM2 C ...
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... Part Number* MP24875DN *For Tape & Reel, add suffix –Z (eg. MP24875 DN–Z); For RoHS compliant packaging, add suffix –LF (eg. MP24875 DN–LF–Z) ABSOLUTE MAXIMUM RATINGS Supply Voltage (V )......................-0.3V to +60V IN Switch Voltage (V ).............-0. BST to SW ......................................-0.3V to +5V All Other Pins ..................................-0.3V to +5V Continuous Power Dissipation (T … ...
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... Thermal Shutdown (5) Minimum Off Time (5) Minimum On Time EN Up Threshold EN Threshold Hysteresis Note: 5) Guaranteed by design. MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER = +25°C, unless otherwise noted. A Symbol Condition V 4.5V < V < 55V – ...
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... Connect a bypass capacitor between this pin and SW pin. MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER Connect exposed pad to GND plane for optimal thermal performance. www.MonolithicPower.com © 2010 MPS. All Rights Reserved. ...
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... EN Shutdown V EN 5V/div V SW 50V/div I LED 200mA/div I INDUCTOR 200mA/div MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER PWM Dimming f =200Hz,D =50% PWM PWM V EN 5V/div V COMP 500mV/div V SW 20V/div I LED ...
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... REFERENCE EN UVLO 0.5ms 0V2 COMP MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER INTERNAL REGULATORS -- ISW + SS COMP OSCILLATOR GND Figure 1—Functional Block Diagram www.MonolithicPower.com © 2010 MPS. All Rights Reserved. ...
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... When EN is higher than zero but lower than its rising threshold, the chip is still in shutdown MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER mode but the shutdown current increases slightly. Under-Voltage Lockout (UVLO) Under-voltage lockout (UVLO) is implemented to protect the chip from operating at insufficient supply voltage ...
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... VIN low and thermal shutdown. In the shutdown and IN procedure, power MOSFET is turned off first to avoid any fault triggering. The COMP voltage and the internal supply rail are then pulled down. Programmable Oscillator The MP24875 oscillating frequency is set by an external resistor, R ground. The value of R from: To get f =200kHz ...
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... LED MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER Output Rectifier Diode The output rectifier diode supplies the current to the inductor when the high-side switch is off. To reduce losses due to the diode forward voltage and recovery times, use a Schottky diode ...
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... COM located at: MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER The system importance, if the output capacitor has a large capacitance and/or a high ESR value. The zero, due to the ESR and capacitance of the output capacitor, is located at: ⎛ ...
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... In below cases, an MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER external BST diode is recommended from the 5V to BST pin: There rail available in the system; VIN is not greater than 5V; ...
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... TYPICAL APPLICATION CIRCUITS Figure 3—700mA WLED Driver Application MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER MP24875 www.MonolithicPower.com © 2010 MPS. All Rights Reserved. 12 ...
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... 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. MP24875 Rev. 1.0 9/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP24875 – 1.5A, 200kHz, 55V HIGH-POWER LEDS DRIVER SOIC8 (EXPOSED PAD) 0.150(3.80) 0.228(5.80) 0.157(4.00) 0.244(6.20) SEE DETAIL " ...