ADP1741

2 A，低压差， CMOS线性稳压器 2 A, Low Dropout, CMOS Linear Regulator

Product Details

The ADP1740/ are CMOS, low dropout linear regulators that operate from 1.6 V to 3.6 V and provide up to 2 A of output current. These Low VIN / VOUT LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5V down to 1.8V I/O rails, and powering core voltages down to 0.75V. Using an advanced proprietary architecture, they provide high power supply rejection, low noise, and achieve excellent line and load transient response with just a small 4.7 µF ceramic output capacitor.

The ADP1740 is available in seven fixed output voltage options. The ADP1741 is an adjustable version that allows output voltages ranging from 0.75 V to 3.3 V via an external divider.The ADP1740/ADP1741 allow an external soft start capacitor to be connected to program the startup. A digital power-good output allows power system monitors to check the health of the output voltage.

The ADP1740/ADP1741 are available in a 16-lead, 4 mm × 4 mm LFCSP, making them not only very compact solutions, but also providing excellent thermal performance for applications that require up to 2 A of output current in a small, low profile footprint.

**Applications**

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Server computers

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Memory components

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Telecommunications equipment

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Network equipment

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DSP/FPGA/microprocessor supplies

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Instrumentation equipment/data acquisition systems

### Features and Benefits

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Maximum output current: 2 A

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Input voltage range: 1.6 V to 3.6 V

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Low shutdown current: 2 μA

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Low dropout voltage: 160 mV @ 2 A load

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Initial accuracy: ±1%

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Accuracy over line, load, and temperature: ±2%

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7 fixed output voltage options with soft start ADP1740: 0.75 V to 2.5 V

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Adjustable output voltage options with soft start ADP1741: 0.75 V to 3.3 V

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High PSRR

65 dB @ 1 kHz

65 dB @ 10 kHz

54 dB @ 100 kHz

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23 μV rms at 0.75 V output

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Stable with small 4.7 μF ceramic output capacitor

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Excellent load and line transient response

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Current-limit and thermal overload protection

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See data sheet for additional features