描述 Description

The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a minimum reset timeout period after VCC rises above the reset threshold. Reset thresholds are available from +1.58V to +4.63V, in approximately 100mV increments. Seven minimum reset timeout delays ranging from 1ms to 1200ms are available.
The MAX6381/MAX6384/MAX6387 have a push-pull active-low reset output. The MAX6382/MAX6385/MAX6388 have a push-pull active-high reset output, and the MAX6383/MAX6386/MAX6389/MAX6390 have an open-drain active-low reset output. The MAX6384/MAX6385/MAX6386 also feature a debounced manual reset input (with internal pullup resistor). The MAX6387/MAX6388/MAX6389 have an auxiliary input for monitoring a second voltage. The MAX6390 offers a manual reset input with a longer VCC reset timeout period (1120ms or 1200ms) and a shorter manual reset timeout (140ms or 150ms).
The MAX6381/MAX6382/MAX6383 are available in 3-pin SC70 and 6-pin μDFN packages and the MAX6384–MAX6390 are available in 4-pin SC70 and 6-pin μDFN packages.

特性 Features

? Factory-Set Reset Threshold Voltages Ranging from +1.58V to +4.63V in Approximately 100mV Increments
? ±2.5% Reset Threshold Accuracy Over Temperature (-40°C to +125°C)
? Seven Reset Timeout Periods Available: 1ms, 20ms, 140ms, 280ms, 560ms, 1120ms, 1200ms (min)
? 3 Reset Output Options
? Active-Low Push-Pull
? Active-High Push-Pull
? Active-Low Open-Drain
? Reset Output State Guaranteed Valid Down to VCC = 1V
? Manual Reset Input (MAX6384/MAX6385/MAX6386)
? Auxiliary RESET IN (MAX6387/MAX6388/MAX6389)
? VCC Reset Timeout (1120ms or 1200ms)/Manual Reset Timeout (140ms or 150ms) (MAX6390)
? Negative-Going VCC Transient Immunity
? Low Power Consumption of 6μA at +3.6V and 3μA at +1.8V
? Pin Compatible with MAX809/MAX810/MAX803/MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348, and MAX6711/MAX6712/MAX6713
? Tiny 3-Pin/4-Pin SC70 and 6-Pin μDFN Packages
? AEC-Q100 Qualified, Refer to Ordering Information for the Specific /V Trim Version

應用 Application

? 計算機
? 控制器
? 精確的μP與μC電源監(jiān)控
? 雙電壓系統(tǒng)
? 智能儀表
? 便攜式電池供電設備

簡介

MAX6388屬于集成電路（IC）的監(jiān)控器。由制造生產(chǎn)的MAX6388監(jiān)控器PMIC 監(jiān)控器用于監(jiān)視和/或控制電路中的電壓軌，能夠連接微控制器以維持一定的功率限值。監(jiān)控器類型包括電池備用電路、監(jiān)控器、多電壓監(jiān)控器、電源監(jiān)控器、穩(wěn)壓器/監(jiān)控器、復位計時器、定序器、簡單復位/上電復位、智能開/關控制器、系統(tǒng)管理器、電壓檢測器和看門狗電路。