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lt1763 pdf datasheet (500mA, L
消耗积分:5 |
格式:rar |
大小:555 |
2008-09-01
孙成红
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The LT®1763 series are micropower, low noise, low dropout
regulators. The devices are capable of supplying 500mA
of output current with a dropout voltage of 300mV. Designed
for use in battery-powered systems, the low 30μA
quiescent current makes them an ideal choice. Quiescent
current is well controlled; it does not rise in dropout as it
does with many other regulators.
A key feature of the LT1763 regulators is low output noise.
With the addition of an external 0.01μF bypass capacitor,
output noise drops to 20μVRMS over a 10Hz to 100kHz
bandwidth. The LT1763 regulators are stable with output
capacitors as low as 3.3μF. Small ceramic capacitors can
be used without the series resistance required by other
regulators.
Internal protection circuitry includes reverse battery protection,
current limiting, thermal limiting and reverse current
protection. The parts come in fi xed output voltages of 1.5V,
1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device
with a 1.22V reference voltage. The LT1763 regulators
are available in 8-lead SO and 12-lead, low profi le (4mm
× 3mm × 0.75mm) DFN packages.
regulators. The devices are capable of supplying 500mA
of output current with a dropout voltage of 300mV. Designed
for use in battery-powered systems, the low 30μA
quiescent current makes them an ideal choice. Quiescent
current is well controlled; it does not rise in dropout as it
does with many other regulators.
A key feature of the LT1763 regulators is low output noise.
With the addition of an external 0.01μF bypass capacitor,
output noise drops to 20μVRMS over a 10Hz to 100kHz
bandwidth. The LT1763 regulators are stable with output
capacitors as low as 3.3μF. Small ceramic capacitors can
be used without the series resistance required by other
regulators.
Internal protection circuitry includes reverse battery protection,
current limiting, thermal limiting and reverse current
protection. The parts come in fi xed output voltages of 1.5V,
1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device
with a 1.22V reference voltage. The LT1763 regulators
are available in 8-lead SO and 12-lead, low profi le (4mm
× 3mm × 0.75mm) DFN packages.
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