MAX887, MAX887H 100% Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter

The MAX887 high-efficiency, Step-down DC-DC Converter provides an adjustable output from 1.25V to 10.5V. It accepts inputs from 3.5V to 11V and delivers 600mA. Operation to 100% duty cycle minimizes dropout voltage (300mV typ at 500mA). Synchronous rectification reduces output Rectifier losses, resulting in efficiency as high as 95%.
Fixed-frequency pulse-width modulation (PWM) reduces noise in sensitive Communications applications. Using a high-frequency internal Oscillator allows tiny surface-mount components to reduce PC board area, and eliminates audio-frequency interference. A SYNC input allows synchronization to an external Clock to avoid interference with sensitive RF and data-acquisition circuits.
The MAX887 features current-mode operation for superior load/line-transient response. Cycle-by-cycle current limiting protects the internal MOSFET and Rectifier A low-current (2.5A typ) shutdown mode conserves battery life.
By Maxim Integrated Products
MAX887 's PackagesMAX887 's pdf datasheet

MAX887 Pinout, Pinouts
MAX887 pinout,Pin out
This is one package pinout of MAX887,If you need more pinouts please download MAX887's pdf datasheet.

MAX887 Application circuits
MAX887 circuits
This is one application circuit of MAX887,If you need more circuits,please download MAX887's pdf datasheet.

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