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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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MCP14700 데이터시트(PDF) 1 Page - Microchip Technology |
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MCP14700 데이터시트(HTML) 1 Page - Microchip Technology |
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1 / 26 page  © 2009 Microchip Technology Inc. DS22201A-page 1 MCP14700 Features • Independent PWM Input Control for High-Side and Low-Side Gate Drive • Input Logic Level Threshold 3.0V TTL Compatible • Dual Output MOSFET Drive for Synchronous Applications • High Peak Output Current: 2A (typical) • Internal Bootstrap Blocking Device • +36V BOOT Pin Maximum Rating • Low Supply Current: 45 µA (typical) • High Capacitive Load Drive Capability: - 3300 pF in 10.0 ns (typical) • Input Voltage Undervoltage Lockout Protection • Overtemperature Protection • Space Saving Packages: -8-Lead SOIC - 8-Lead 3x3 DFN Applications • 3-Phase BLDC Motor Control • High Efficient Synchronous DC/DC Buck Converters • High Current Low Output Voltage Synchronous DC/DC Buck Converters • High Input Voltage Synchronous DC/DC Buck Converters • Core Voltage Supplies for Microprocessors General Description The MCP14700 is a high-speed synchronous MOSFET driver designed to optimally drive a high-side and low-side N-Channel MOSFET. The MCP14700 has two PWM inputs to allow independent control of the external N-Channel MOSFETs. Since there is no internal cross conduction protection circuitry the external MOSFET dead time can be tightly controlled allowing for more efficient systems or unique motor control algorithms. The transition thresholds for the PWM inputs are typically 1.6V on a rising PWM input signal and typically 1.2V on a falling PWM input signal. This makes the MCP14700 ideally suited for controllers that utilize 3.0V TTL/CMOS logic. The PWM inputs are internally pulled low ensuring the output drive signals are low if the inputs are floating. The HIGHDR and LOWDR peak source current capability of the MCP14700 device is typically 2A. While the HIGHDR can sink 2A peak typically, the LOWDR can sink 3.5A peak typically. The low resistance pull-up and pull-down drive allow the MCP14700 to quickly transition a 3300 pF load in typically 10 ns. Bootstrapping for the high-side drive is internally implemented which allows for a reduced system cost and design complexity. The MCP14700 features under voltage lock out (UVLO) with a typical hysteresis of 500 mV. Overtemperature protection with hysteresis is also featured on the device. Package Types MCP14700 3x3 DFN* PWMLO PWMHI GND BOOT VCC 1 2 3 4 8 7 6 5 LOWDR HIGHDR PHASE * Includes Exposed Thermal Pad (EP); see Table 3-1. EP 9 MCP14700 SOIC PWMLO PWMHI GND BOOT VCC 1 2 3 4 8 7 6 5 LOWDR HIGHDR PHASE Dual Input Synchronous MOSFET Driver |
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