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ADP1882 - Synchronous Current-Mode

Datasheet Summary

Description

The ADP1882/ADP1883 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme.

Features

  • Power input voltage as low as 2.75 V to 20 V Bias supply voltage range: 2.75 V to 5.5 V Minimum output voltage: 0.8 V 0.8 V reference voltage with ±1.0% accuracy Supports all N-channel MOSFET power stages Available in 300 kHz, 600 kHz, and 1.0 MHz options No current-sense resistor required Power saving mode (PSM) for light loads (ADP1883 only) Resistor-programmable current-sense gain Thermal overload protection Short-circuit protection Precision enable input Integrated bootstrap diode for high-s.

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Datasheet Details

Part number ADP1882
Manufacturer Analog Devices
File Size 2.27 MB
Description Synchronous Current-Mode
Datasheet download datasheet ADP1882 Datasheet
Additional preview pages of the ADP1882 datasheet.

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Full PDF Text Transcription

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Synchronous Current-Mode with Constant On-Time, PWM Buck Controller www.DataSheet4U.com ADP1882/ADP1883 FEATURES Power input voltage as low as 2.75 V to 20 V Bias supply voltage range: 2.75 V to 5.5 V Minimum output voltage: 0.8 V 0.8 V reference voltage with ±1.0% accuracy Supports all N-channel MOSFET power stages Available in 300 kHz, 600 kHz, and 1.0 MHz options No current-sense resistor required Power saving mode (PSM) for light loads (ADP1883 only) Resistor-programmable current-sense gain Thermal overload protection Short-circuit protection Precision enable input Integrated bootstrap diode for high-side drive 140 μA shutdown supply current Starts into a precharged load Small, 10-lead MSOP package TYPICAL APPLICATIONS CIRCUIT VIN = 2.
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