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MP9487GN-Z

MP9487GN-Z

  • 厂商:

    MPS(美国芯源)

  • 封装:

    SOIC8_150MIL_EP

  • 描述:

    100V输入,3.5A,开关电流限制降压转换器

  • 数据手册
  • 价格&库存
MP9487GN-Z 数据手册
MP9487 100V Input, 3.5A, Switching Current Limit Step-Down Converter DESCRIPTION FEATURES The MP9487 is a high-voltage, step-down, switching regulator that delivers up to 1A of continuous current to the load. It integrates a high-side, high-voltage, power MOSFET with a current limit of 3.5A, typically. The wide 4.5V to 100V input range accommodates a variety of step-down applications, making it ideal for automotive, industry, and lighting applications. Hysteretic voltage-mode control is employed for very fast response. MPS’s proprietary feedback control scheme minimizes the number of required external components.      The switching frequency can be up to 1MHz, allowing for small component size. Thermal shutdown and short-circuit protection (SCP) provide reliable and fault-tolerant operations. A 170µA quiescent current allows the MP9487 to be used in battery-powered applications.         Wide 4.5V to 100V Input Range 3.5A Typical Peak Switching Current Limit Hysteretic Control: No Compensation Up to 1MHz Switching Frequency Short-Circuit Protection (SCP) with Integrated High-Side MOSFET 170μA Quiescent Current Thermal Shutdown Available in a SOIC-8 Package with an Exposed Pad APPLICATIONS Scooters, E-Bike Control Power Supplies Solar Energy Systems Automotive System Power Industrial Power Supplies High-Power LED Drivers All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. The MP9487 is available in a SOIC-8 package with an exposed pad. TYPICAL APPLICATION Efficiency vs. Output Current C3 VIN C1 EN EN TM BST D1 MP9487 GND VOUT SW R1 FB R2 C2 Efficiency(%) VIN L1 100 90 80 70 60 50 40 30 20 10 0 V OUT=5V, L=33uH V in= 36V V in= 60V 1 MP9487 Rev. 1.0 2/19/2019 10 100 Output Current(mA) www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1000 1 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP9487GN SOIC-8 EP See Below * For Tape & Reel, add suffix –Z (e.g. MP9487GN–Z) TOP MARKING MP9487: part number LLLLLLLL: lot number MPS: MPS prefix Y: year code WW: week code PACKAGE REFERENCE TOP VIEW FB 1 8 GND NC 2 7 EN VIN 3 6 TM BST 4 5 SW SOIC-8 EP MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER PIN FUNCTIONS SOIC-8 EP Pin # Name 1 FB 2 NC 3 VIN 4 BST 5 SW 6 TM 7 EN 8 GND MP9487 Rev. 1.0 2/19/2019 Description Feedback. FB is the input to the voltage hysteretic comparators. The average FB voltage is maintained at 200mV by loop regulation. No connection. Input supply. VIN supplies power to all of the internal control circuitries, both BST regulators, and the high-side switch. A decoupling capacitor to ground must be placed close to VIN to minimize switching spikes. Bootstrap. BST is the positive power supply for the internal, floating, high-side MOSFET driver. Connect a bypass capacitor between BST and SW. Switch node. SW is the output from the high-side switch. A low forward voltage Schottky rectifier to ground is required. The rectifier must be placed close to SW to reduce switching spikes. Test mode pin for factory use only. Connect TM pin to EN pin in application. Enable input. Pull EN below the specified threshold to shut down the MP9487. Pull EN above the specified threshold or leave EN floating to enable the MP9487. Ground. GND should be placed as close to the output capacitor as possible to avoid the high-current switch paths. Connect the exposed pad to GND plane for optimal thermal performance. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 3 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER θJA θJC ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance Supply voltage (VIN) ...................-0.3V to +100V Switch voltage (VSW) .................................. -0.5V … ................. -0.5V(-7V for 10ns) to VIN + 0.5V to VIN + 0.5V BST to SW ......................................-0.3V to +6V All other pins ...................................-0.3V to +6V Junction temperature ................................150°C Continuous power dissipation (TA = +25°C) (2) ............................................................... 3.6W (4) Lead temperature .....................................260°C Storage temperature ................ -65°C to +150°C SOIC-8 EP EV9487-N-00A (4) .................. 34 ........ 4 .... °C/W JESD51-7 (5) .......................... 50 ....... 10... °C/W Recommended Operating Conditions (3) Supply voltage (VIN) ........................ 4.5V to 95V EN and TM voltages ............................. 0V to 5V Maximum switching frequency .................. 1MHz Operating junction temp. (TJ) ... -40°C to +125°C MP9487 Rev. 1.0 2/19/2019 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-toambient 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 produces an excessive die temperature, causing the regulator to 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 EV9487-N-00A 2-layer 63mmx63mm board. 5) Measured on JESD51-7 4-layer board. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 4 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER ELECTRICAL CHARACTERISTICS VIN = 60V, TA = +25°C, unless otherwise noted. Specifications over temperature are guaranteed by design and characterization. Parameter Symbol VIN UVLO threshold VIN UVLO hysteresis Shutdown supply current Quiescent supply current Upper switch on resistance (6) Upper switch leakage current Current limit EN up threshold EN threshold hysteresis EN input current EN pull-up current RDS(ON) ISWLK IPK VENH VENHY IENI IENS Feedback voltage threshold high (6) VFBH Feedback voltage threshold low (6) VFBL FB input current IFB FB propagation delay to output high(6) TFBDH FB propagation delay to output high(6) TFBDL Thermal shutdown (7) Condition VEN = 0V No load, TM = low, VFB = 250mV VBST - VSW = 5V VEN = 0V, VSW = 0V VFB = 0.15V VEN = 5V VEN = 2V 4.5V < VIN < 95V, VFB rising from 0V until VSW < 30V 4.5V < VIN < 95V, VFB falling from 0.25V until VSW > 30V VFB = 5V or 0V Falling edge of VFB from 0.25V to 0V to VSW rising edge Rising edge of VFB from 0V to 0.25V to VSW falling edge Trigger thermal shutdown Hysteresis Min Typ Max Units 3.6 4.0 0.4 2 4.35 5 V V µA 170 240 µA 2.9 1.4 500 0.01 3.5 1.55 320 0.01 2 1 3 mΩ µA A V mV µA µA 1 4.5 1.7 209 215 221 mV 179 185 191 mV 300 nA -300 100 ns 100 ns 150 20 C NOTES: 6) Guaranteed by design. 7) Guaranteed by characterization, not tested in production. MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 5 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER TYPICAL CHARACTERISTICS VIN = 60V, TA = +25°C, unless otherwise noted. Shutdown Current vs. Input Voltage Quiesvent Current vs. Input Voltage EN=HIGH, TM=LOW, V FB=250mV 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 220 Input Current(uA) Input Current(uA) EN=LOW 4 17 30 43 56 69 82 210 200 190 180 95 4 17 30 Input Voltage(V) 56 69 82 95 Quiescent Current vs. Temperature Shutdown Current vs. Temperature V IN =95V, TM=LOW,EN=HIGH,VFB=250mV V IN =95V, EN=LOW 20 220 16 210 In p ut C urrent(uA ) In p ut C urrent(uA ) 43 Input Voltage(V) 12 8 4 200 190 180 0 -40 -20 0 -40 -20 0 20 40 60 80 100 120 140 20 40 60 80 100 120 140 Junction Temperature(oC) J u nction Tem perature(o C ) EN Threshold vs. Temperature UVLO Threshold vs. Temperature 2 4.5 rising falling 4.1 3.9 1.7 E N T hreshold(V ) V in T hreshold(V ) 4.3 1.4 1.1 rising 0.8 3.7 falling 0.5 3.5 -40 -20 0 20 40 60 80 100 120 140 J u nction Tem perature(o C ) MP9487 Rev. 1.0 2/19/2019 -40 -20 0 20 40 60 80 100 120 140 J u nction Tem perature(o C ) www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 6 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS VIN = 60V, VOUT = 5V, IOUT = 1A, L = 33μH, COUT = 100μF, TA = +25°C, unless otherwise noted. 100 90 80 70 60 50 40 30 20 10 0 Load Regulation Regulation Error(%) Efficiency(%) Efficiency vs. Output Current V in=36V V in=60V 1 10 100 Output Current(mA) 1000 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 V in= 36V V in= 60V 0 200 400 600 800 1000 Output Current(mA) Line Regulation 2 Iout= 1m A Regulation Error(%) 1.5 Iout= 1000m A 1 0.5 0 -0.5 -1 -1.5 -2 0 10 20 30 40 50 60 70 80 90 100 Input Voltage(V) MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 7 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 60V, VOUT = 5V, IOUT = 1A, L = 33μH, COUT = 100μF, TA = +25°C, unless otherwise noted. Steady State Steady State IOUT = 0A IOUT = 1A CH1: CH1: VOUT/AC VOUT/AC 100mV/div. 100mV/div. CH2: VIN 50V/div. CH2: VIN 50V/div. CH3: VSW 50V/div. CH3: VSW 50V/div. CH4: IL 1A/div. CH4: IL 2A/div. 4µs/div. 4µs/div. Power On Power On IOUT = 0A IOUT = 1A CH1: VOUT CH1: VOUT 2V/div. 2V/div. CH2: VIN 50V/div. CH2: VIN 50V/div. CH3: VSW 50V/div. CH3: VSW 50V/div. CH4: IL 1A/div. CH4: IL 1A/div. 20ms/div. 20ms/div. Power Off Power Off IOUT = 0A IOUT = 1A CH1: VOUT CH1: VOUT 2V/div. 2V/div. CH2: VIN 50V/div. CH2: VIN 50V/div. CH3: VSW 10V/div. CH3: VSW 50V/div. CH4: IL 500mA/div. CH4: IL 1A/div. 100ms/div. MP9487 Rev. 1.0 2/19/2019 20ms/div. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 8 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 60V, VOUT = 5V, IOUT = 1A, L = 33μH, COUT = 100μF, TA = +25°C, unless otherwise noted. EN Start-Up EN Start-Up IOUT = 0A IOUT = 1A CH1: VOUT CH1: VOUT 2V/div. 2V/div. CH2: VEN 5V/div. CH2: VEN 5V/div. CH3: VSW 50V/div. CH3: VSW 50V/div. CH4: IL 1A/div. CH4: IL 1A/div. 20ms/div. 20ms/div. EN Shutdown EN Shutdown IOUT = 0A IOUT = 1A CH1: VOUT 2V/div. CH1: VOUT 2V/div. CH2: VEN 5V/div. CH2: VEN 5V/div. CH3: VSW CH3: VSW 50V/div. 20V/div. CH4: IL 1A/div. CH4: IL 500mA/div. 100ms/div. 400µs/div. SCP Entry SCP Recovery IOUT = 0A IOUT = 0A CH1: VOUT CH1: VOUT 2V/div. 2V/div. CH2: VIN 50V/div. CH2: VIN 50V/div. CH3: VSW 50V/div. CH3: VSW 50V/div. CH4: IL 1A/div. CH4: IL 1A/div. 400µs/div. MP9487 Rev. 1.0 2/19/2019 40ms/div. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 9 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 60V, VOUT = 5V, IOUT = 1A, L = 33μH, COUT = 100μF, TA = +25°C, unless otherwise noted. SCP Entry SCP Recovery IOUT = 1A IOUT = 1A, E-load turn-on threshold = 0.32V CH1: VOUT CH1: VOUT 2V/div. 2V/div. CH2: VIN 50V/div. CH2: VIN 50V/div. CH3: VSW 50V/div. CH3: VSW 50V/div. CH4: IL 2A/div. CH4: IL 1A/div. 1ms/div. 20ms/div. Load Transient Load Transient IOUT = 0A --> 1A @ 70mA/µs IOUT=1A-->2A@70mA/µs CH1: VOUT/AC 50mV/div. CH4: ILOAD 1A/div. 400µs/div. MP9487 Rev. 1.0 2/19/2019 400µs/div. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 10 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER BLOCK DIAGRAM Figure 1: Function Block Diagram MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 11 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER OPERATION Hysteresis Current Control with Adaptive Threshold Adjustment The MP9487 operates in a hysteretic voltagecontrol mode to regulate the output voltage. FB is connected to the tap of a resistor divider, which determines the output voltage. The power MOSFET is turned on when the FB voltage (VFB) drops to 185mV and remains on until VFB rises to 215mV. The power MOSFET is turned off when VFB rises to 215mV and remains off until VFB falls to 185mV. The two thresholds of 215mV and 185mV are adjusted adaptively to compensate for all the circuit delays, so the output voltage is regulated with an average 200mV value at FB. Enable (EN) Control The MP9487 has a dedicated enable control pin (EN) with positive logic. Its falling threshold is 1.23V, and its rising threshold is 1.55V (320mV higher). When floating, EN is pulled up to about 3V by an internal 2µA current source, so it is enabled. A current over 2µA is needed to pull EN down. Floating Driver and Bootstrap Charging The floating power MOSFET driver is powered by an external bootstrap capacitor. This floating driver has its own under-voltage lockout (UVLO) protection. The UVLO rising threshold is 2.2V with a threshold of 150mV. Under-Voltage Lockout (UVLO) Under-voltage lockout (UVLO) is implemented to protect the chip from operating at an insufficient supply voltage. The UVLO rising threshold is about 4V, while its falling threshold is a consistent 3.6V. Thermal Shutdown Thermal shutdown is implemented to prevent the chip from operating at exceedingly high temperatures. When the silicon die temperature is higher than its upper threshold, the entire chip shuts down. When the temperature is lower than its lower threshold, the chip is enabled again. Output Short Protection The output voltage is well-regulated when VFB is around 200mV. If the output is pulled low in overcurrent protection (OCP) or is shorted to GND directly, VFB is low, even though the power MOSFET is turned on. The MP9487 regards the low VFB as a failure. The power MOSFET shuts off if the failure time is longer than 10µs. The MP9487 attempts operation again after a delay of about 300µs. The power MOSFET current is also accurately sensed via a current sense MOSFET. If the current is over the current limit, the IC is shut down. This offers extra protection under outputshort conditions. The bootstrap capacitor is charged and regulated to about 5V by the dedicated internal bootstrap regulator. If the internal circuit does not have sufficient voltage, and the bootstrap capacitor is not sufficiently charged, extra external circuitry can be used to ensure that the bootstrap voltage is in the normal operating region. Refer to the External Bootstrap Diode section on page 14 for more details. MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 12 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER APPLICATION INFORMATION Setting the Output Voltage The output voltage (VOUT) is set by a resistor divider (R1 and R2) (see the Typical Application on page 1). To achieve good noise immunity and low power loss, R2 is recommended to be in the range of 5kΩ to 50kΩ. R1 can then be determined with Equation (1): R1  VOUT  VFB  R2 VFB (1) Where VFB is 0.2V, typically. Output Capacitor and Frequency Setting The output capacitor (COUT) is necessary for achieving a smooth output voltage. The ESR of the capacitor should be sufficiently large compared to the capacitance; otherwise, the system may behave in an unexpected way, and the current ripple may be very high. VFB changes from 185mV to 215mV when the power MOSFET switches on. To charge the capacitor and generate 215mV at FB, the system needs ESR and some inductor current. For example, for a 5V VOUT, if the forward capacitor is 0.1µF, the suggested ESR range of the output capacitor is 100mΩ to 250mΩ. Tantalum or aluminum electrolytic capacitors with a small ceramic capacitor are recommended. A forward capacitor across R1 is recommended when the output capacitor is tantalum or aluminum electrolytic, which can set the desired frequency if the output capacitor and ESR cannot be changed. The forward capacitor can reduce the output voltage ripple. In some application, simply a forward capacitor may not get proper frequency, then we can add a forward resistor in series with the forward capacitor or even more add a ceramic on the output. Selecting the Inductor The inductor (L) is required to convert the switching voltage to a smooth current to the load. Although the output current is low, it is recommended that the inductor current be continuous in each switching period to prevent reaching the current limit. Calculate the inductor value with Equation (2): MP9487 Rev. 1.0 2/19/2019 (V  VOUT) VOUT L  IN FSW  IOUT  VIN  K (2) Where K is a coefficient of about 0.15 ~ 0.85. Output Rectifier Diode The output rectifier diode supplies 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. The average current through the diode can be approximated with Equation (3):  V  ID  IOUT x1  OUT  VIN   (3) Choose a diode with a maximum reverse voltage rating greater than the maximum input voltage and a current rating is greater than the average diode current. Input Capacitor (CIN) The input current to the step-down converter is discontinuous and therefore requires a capacitor to supply AC current to the step-down converter while maintaining the DC input voltage. Use low ESR capacitors for the best performance, especially under high switching frequency applications. The RMS current through the input capacitor can be calculated with Equation (4): IIN _ AC  IOUT x VOUT V x(1  OUT ) VIN VIN (4) With low ESR capacitors, the input voltage ripple can be estimated with Equation (5): VIN  IOUT  VOUT V  (1  OUT ) FSW  CIN  VIN VIN (5) Choose an input capacitor with enough RMS current rating and enough capacitance for small input voltage ripples. When electrolytic or tantalum capacitors are applied, a small, high-quality ceramic capacitor (i.e.: 0.1μF) should be placed as close to the IC as possible. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 13 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER External Bootstrap Diode An external bootstrap diode may enhance the efficiency of the converter (see Figure 2). An external BST diode is recommended from the 5V supply to BST in the following cases:    There is a 5V rail available in the system VIN is not greater than 5V VOUT is between 3.3V and 5V This diode is also recommended for high duty cycle operations (when VOUT / VIN > 65%) and very high frequency (close to 1MHz) applications. The bootstrap diode can be a low-cost one, such as IN4148 or BAT54. 5V 1. Place the input decoupling capacitor, catch diode, and the MP9487 (VIN, SW, and PGND) as close to each other as possible. 2. Keep the power traces very short and fairly wide, especially for the SW node. This can help greatly reduce voltage spikes on the SW node and lower the EMI noise level. 3. Run the feedback trace as far from the inductor and noisy power traces (like the SW node) as possible. 4. Place thermal vias with 15mil barrel diameter and 40mil pitch (distance between the centers) under the exposed pad to improve thermal conduction. BST MP9487 PCB Layout Guidelines Efficient PCB layout is critical for stable operation. For best results, refer to Figure 3 and follow the guidelines below. 0.1µF SW Via Top Layer Bottom Layer VIN C1A C1B C4 R1 R2 Figure 2: External Bootstrap Diode U1 C3 C2B D1 C2A GND L1 VOUT Figure 3: Recommended Layout MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 14 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER Design Example Table 1 is a design example following the application guidelines for the specifications below. Table 1: Design Example 8V to 95V Vin 5V Vout 0A to 1A Continuous Iout 2A Pulse Iout The typical application circuit for VOUT = 5V in Figure 4 shows the detailed application schematic and is the basis for the typical performance waveforms. For more detailed device applications, please refer to the related evaluation board datasheets. MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 15 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER TYPICAL APPLICATION CIRCUIT C3 0.1µF 2.2µF/ 2.2µF/ 100V 100V VIN C1A C1B EN BST VIN EN GND C4 C2A 0.1µF 4.7µF VOUT SW + R1 D1 1A/100V 240kΩ MP9487 TM L1 33µH C2B 100µF/10V TR3C107K010C0200 FB R2 10kΩ Figure 4: VIN = 8 ~ 95V, VOUT = 5V, IOUT = 1A C3 0.1uF 2.2uF/ 2.2uF/ 100V 100V VIN C1A EN C1B VIN EN TM BST C4 C2A 0.1uF 10uF VOUT SW R1 D1 1A/100V 590k MP9487 GND L1 47uH + R3 C2B 100uF/25V FB R2 10k 4.7k C2B: T491X107K025AT Figure 5: VIN=15~95V, VOUT=12V, IOUT=1A MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 16 MP9487 – 100V INPUT, 3.5A, SWITCHING CURRENT LIMIT STEP-DOWN CONVERTER PACKAGE INFORMATION SOIC-8 EP NOTICE: The information in this document is subject to change without notice. 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. MP9487 Rev. 1.0 2/19/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 17
MP9487GN-Z 价格&库存

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MP9487GN-Z
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      MP9487GN-Z
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      MP9487GN-Z
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      MP9487GN-Z
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