MAX6381, MAX6382, MAX6383, MAX6384, MAX6385, MAX6386, MAX6387, MAX6388, MAX6389, MAX6390 SC70/µDFN封装、单/双路、低电压、低功耗、微处理器复位电路

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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 V_CC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a minimum reset timeout period after V_CC 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 V_CC 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.

关键特性

应用/使用

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 V_CC = 1V
Manual Reset Input (MAX6384/MAX6385/MAX6386)
Auxiliary RESET IN (MAX6387/MAX6388/MAX6389)
V_CC Reset Timeout (1120ms or 1200ms)/Manual Reset Timeout (140ms or 150ms) (MAX6390)
Negative-Going V_CC 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

	计算机
	控制器
	精确的µP与µC电源监视
	双电压系统
	智能仪表
	便携式电池供电设备

Key Specifications: Pushbutton Devices
Part Number	Number of Monitored Voltages	Manual Reset Feature	MR1 Setup Time	Reset Threshold Range (V)	Active-Low Reset Output	Min. Reset Timeout Range	Reset Thresh. Acc. (% @+25°C)	Max. I_CC (µA)	Industry Qualified	Operating Temp. Range (°C)
MAX6390	1	Single Soft/Hard Reset Output	1µs	1.2 to 1.79 1.8 to 2.49 2.5 to 3.29 3.3 to 4.99	Open Drain	>1s	1.5	13	Automotive - General	-40 to +125 -40 to +85 0 to +70
See All Pushbutton Devices (17)

Key Specifications: Supervisors (1 Monitored Voltage)
Part Number	Reset Threshold Range (V)	Active-Low Reset Output	Active-High Reset Output	Min. Reset Timeout Range	Watchdog Feature	Supervisor Features	Reset Thresh. Acc. (% @+25°C)	Max. I_CC (µA)	Industry Qualified	Operating Temp. Range (°C)
MAX6381	1.2 to 1.8 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5	Push-Pull	-	15ms to 85ms 1ms to 15ms 300ms to 1s 85ms to 300ms >1s	No Watchdog	-	1.5	13	Automotive - General	-40 to +125 -40 to +85 0 to +70
MAX6382		-	Push-Pull			-
MAX6383		Open Drain	-			-
MAX6384		Push-Pull	-			Manual Reset
MAX6385		-	Push-Pull			Manual Reset
MAX6386		Open Drain	-			Manual Reset
See All Supervisors (1 Monitored Voltage) (268)

Key Specifications: Supervisors (2 Monitored Voltages)
Part Number	Interface	Reset Threshold Range (V)	Active-Low Reset Output	Active-High Reset Output	Min. Reset Timeout Range	Watchdog Feature	Supervisor Features	Reset Thresh. Acc. (% @+25°C)	Max. I_CC (µA)	Industry Qualified	Operating Temp. Range (°C)
MAX6387	Factory Fixed R/C Adjustable	1.2 to 1.8 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5	Push-Pull	-	15ms to 85ms 1ms to 15ms 300ms to 1s 85ms to 300ms >1s	No Watchdog	Adjustable Reset Input Manual Reset	1.5	13	Automotive - General	-40 to +125 -40 to +85 0 to +70
MAX6388			-	Push-Pull			Adjustable Reset Input
MAX6389			Open Drain	-			Adjustable Reset Input
See All Supervisors (2 Monitored Voltages) (70)