LT3500EDD#PBF

LT3500 is a current mode PWM step-down DC/DC converter with an internal 2.3A switch. Resistor-programmable 250KHz to 2.2MHz frequency range and synchronization capability enable optimization between efficiency and external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against a shorted output. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up, and also provides output tracking. It contains an internal NPN transistor with feedback control which can be configured as a linear regulator or as a linear regulator controller. It is widely used in application such as automotive battery regulation, industrial control, wall transformer regulation, distributed power regulation etc.

• Wide input voltage range is 3V to 36V
• Short-circuit protected over full input range
• 2A output current capability
• Soft-start/tracking capability
• Power good comparator with complimentary outputs
• Supply quiescent current is 2.5mA typical at (VFB = 0.9V, TJ = 25°C, VVIN = 15V)
• Supply shutdown current is 12μA typical at (VSHDN = 0V, TJ = 25°C, VVIN = 15V)
• FB voltage is 0.8V typical at (VVC = 1V, TJ = 25°C, VVIN = 15V)
• LDRV maximum current is 13mA typical at (VLDRV = 0V, TJ = 25°C, VVIN = 15V)
• Operating temperature is -40°C to 125°C, package style is 12-lead plastic DFN

附註

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