CAT6218-180TDGT3

0.3A,1.8V正固定输出低压差稳压器

The CAT6218 is a 300 mA CMOS low dropout regulator that provides fast response time during load current and line voltage changes. The quick-start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn-on time of just 150 µs. With zero shutdown current and low ground current of 55 µA typical, the CAT6218 is ideal for battery-operated devices with supply voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit disables the output at supply voltages under 2.1 V typical. The CAT6218 offers 1% initial accuracy and low dropout voltage, 180 mV typical at 300 mA. Stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost. Other features include fold-back current current limit and thermal protection. The device is available in the low profile 1 mm max height 5-lead thin SOT23 package.

Features

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Guaranteed 300 mA output current

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Low dropout voltage of 180 mV typical at 300 mA

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Stable with 1 µF ceramic output capacitor

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External 10 nF bypass capacitor for low noise

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Quick-start feature

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No-load ground current of 55 µA typical

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Full-load ground current of 80 µA typical

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±1.0% initial accuracy VOUT ≥ 2.0V

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±2.0% accuracy over temperature VOUT ≥ 2.0V

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“Zero” current shutdown mode

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Fold-back current limit and undervoltage lockout

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Thermal protection

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Thin SOT23-5 package