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The Performance Summary Of MOSFET Driver LTC7003

2017-07-17 14:51:06 | 日記

Linear Technology Corporation, a subsidiary of ADN Semiconductor, today introduced the LTC7003, a high-speed, high-side N-channel MOSFET driver that operates at up to 60V supply voltage. The internal charge pump fully enhances the external N-channel MOSFET switch to keep it on for an indefinite period. The LTC7003's powerful 1Ω gate driver can easily drive gate capacitance MOSFETs with very short conversion times and 35ns propagation delays, making them ideal for high frequency switching and static switching applications.

The LTC7003 operates from a 3.5V to 60V (65V absolute maximum) input power supply range with a 3.5V to 15V driver power supply range. The element detects the overcurrent condition by monitoring the voltage across the external sense resistor, which is connected in series with the drain of the external MOSFET switch. When the LTC7003 senses that the switching current exceeds the preset value, a fault flag is determined and the switch is turned off for a period of time. The off time is set by the external timer capacitor. After a predetermined cooling time, the LTC7003 will automatically retry.

The LTC7003 is used to receive a ground-based low-voltage digital input signal and quickly drive a high-side N-channel power MOSFET with a drain of 60V. When driving a 1000pF load, the fast 13ns rise and fall times minimize switching losses. The LTC7003 features adjustable current limit, current monitor output, and adjustable overvoltage lockout and enable input.

The LTC7003 is available in the MSOP-16 package. Available in 3 operating temperature versions, extended and industrial temperature versions are available over the -40 ° C to 125 ° C temperature range from -40 ° C to 150 ° C, While the temperature range for the military temperature range is -55 ° C to 150 ° C. The unit price is $ 2.30. For more information see electronic component distributors website.

Performance Summary: LTC7003

Wide VIN Operating Range: 3.5V to 60V (65V Absolute Maximum)

The internal charge pump provides 100% duty cycle capability

•1Ω pull-down, 2.2Ω pull-up to achieve fast on and off time

•Fast 35ns propagation delay

• Short circuit protection

• Automatically restart the timer

• Open drain fault flag

• Adjustable turn-on and turn-off conversion rates

• The gate driver has a power supply range of 3.5V to 15V

Adjustable current limit

• Current monitor output

•Adjustable input undervoltage and overvoltage lockout

•Low shutdown current: 1μA

•CMOS compatible input

Reference: atmega328p and cr123a

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