ADP2118ACPZ-3.3-R7

3 A， 1.2兆赫/ 600 kHz的高效率同步降压型DC - DC转换器 3 A, 1.2 MHz/600 kHz High Efficiency Synchronous Step-Down DC-to-DC Converter

Product Details

The ADP2118 is a low quiescent current, synchronous, step-down, dc-to-dc regulator in a compact 4mm × 4mm LFCSP package. It uses a current mode, constant frequency pulse-width modulation PWM control scheme for excellent stability and transient response. Under light loads, the ADP2118 can be configured to operate in pulse frequency modulation PFM mode that reduces switching frequency to save power.

The ADP2118 runs from input voltages of 2.3 V to 5.5 V. The output voltage of the ADP2118ACPZ-R7 is adjustable from 0.6 V to input voltage VIN, and the ADP2118ACPZ-x.x-R7 are available in preset output voltage options of 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V. The ADP2118 requires minimal external parts and provides a high efficiency solution with its integrated power switch, synchronous rectifier, and internal compensation. The IC draws less than 3 μA from the input source when it is disabled. Other key features include undervoltage lockout UVLO, integrated soft start to limit inrush current at startup, overvoltage protection OVP, overcurrent protection OCP, and thermal shutdown TSD.

**Applications**

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Point of load conversion

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Communications and networking equipments

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Industrial and instrumentation

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Consumer electronics

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Medical appliances

### Features and Benefits

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3 A continuous output current

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75 mΩ and 40 mΩ integrated FET

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±1.5% output accuracy

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Input voltage range from 2.3 V to 5.5 V

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Output voltage from 0.6 V to VIN

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600 kHz or 1.2 MHz fixed switching frequency

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Synchronizable between 600 kHz and 1.4 MHz

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Selectable synchronize phase shift: 0o or 180o

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Selectable PWM or PFM mode operation

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Current mode architecture

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Precision enable input

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Power good output

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Voltage tracking input

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Integrated soft start

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Internal compensation

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Starts up into a precharged output

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UVLO, OVP, OCP, and thermal shutdown

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Available in 16-lead 4mm × 4mm LFCSP package

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Supported by simPower™ design tool