LT3083IT#PBF

LT3083IT#PBF is a 3A low dropout linear regulator that can be paralleled to increase output current or spread heat on surface-mounted boards. Architected as a precision current source and voltage follower, this new regulator finds use in many applications requiring high current, adjustability to zero, and no heat sink. The device also brings out the collector of the pass transistor to allow low dropout operation down to 310mV when used with multiple supplies. A key feature of the LT3083 is the capability to supply a wide output voltage range. The LT3083 is stable with 10µF of capacitance on the output, and the IC is stable with small ceramic capacitors that do not require additional ESR as is common with other regulators. Applications include high current all surface mount supply, high efficiency linear regulator, post regulator for switching supplies, low parts count variable voltage supply, low output voltage power supplies.

• Outputs may be paralleled for higher current and heat spreading
• Stable with minimum 10µF ceramic capacitor, wide input voltage range from 1.2V to 23V
• Current limit with foldback and overtemperature protection
• VIN dropout voltage is 10mV typical at (ILOAD = 100mA)
• Current limit is 3.7A typical at (VIN = 5V, VCONTROL = 5V, VSET = 0V, VOUT = -0.1V)
• Error amplifier RMS output noise is 40µVRMS typical at (ILOAD = 500mA, 10Hz ≤ f ≤ 100KHz)
• Ripple rejection is 85dB typical at (f = 120Hz, TA = 25°C)
• VCONTROL pin current is 5.5mA typical at (ILOAD = 100mA)
• Minimum load current is 350µA typical at (VIN = 1V, VCONTROL = 2V)
• Operating junction temperature range from -40°C to 125°C, 5-lead plastic TO-220 package

Remarques

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