MAX6381MAX6390 19-1839 Rev 5 7/12 SC70/DFN, Single/Dual Low-Voltage, Low-Power P Reset Circuits General Description Features The MAX6381MAX6390 microprocessor (P) supervisory Factory-Set Reset Threshold Voltages Ranging from +1.58V to +4.63V in Approximately 100mV circuits monitor power-supply voltages from +1.8V to Increments +5.0V while consuming only 3A of supply current at +1.8V. Whenever V falls below the factory-set reset CC 2.5% Reset Threshold Accuracy Over thresholds, the reset output asserts and remains assert- Temperature (-40C to +125C) ed for a minimum reset timeout period after V rises CC Seven Reset Timeout Periods Available: 1ms, above the reset threshold. Reset thresholds are available 20ms, 140ms, 280ms, 560ms, 1120ms, from +1.58V to +4.63V, in approximately 100mV incre- 1200ms (min) ments. Seven minimum reset timeout delays ranging 3 Reset Output Options from 1ms to 1200ms are available. Active-Low Push-Pull The MAX6381/MAX6384/MAX6387 have a push-pull Active-High Push-Pull active-low reset output. The MAX6382/MAX6385/ Active-Low Open-Drain MAX6388 have a push-pull active-high reset output, Reset Output State Guaranteed Valid and the MAX6383/MAX6386/MAX6389/MAX6390 Down to V = 1V CC have an open-drain active-low reset output. The Manual Reset Input (MAX6384/MAX6385/MAX6386) MAX6384/MAX6385/MAX6386 also feature a debounced manual reset input (with internal pullup Auxiliary RESET IN (MAX6387/MAX6388/MAX6389) resistor). The MAX6387/MAX6388/MAX6389 have an V Reset Timeout (1120ms or 1200ms)/Manual CC auxiliary input for monitoring a second voltage. The Reset Timeout (140ms or 150ms) (MAX6390) MAX6390 offers a manual reset input with a longer V CC Negative-Going V Transient Immunity CC reset timeout period (1120ms or 1200ms) and a shorter manual reset timeout (140ms or 150ms). Low Power Consumption of 6A at +3.6V and 3A at +1.8V The MAX6381/MAX6382/MAX6383 are available in 3-pin SC70 and 6-pin DFN packages and the Pin Compatible with MAX6384MAX6390 are available in 4-pin SC70 and MAX809/MAX810/MAX803/MAX6326/MAX6327/ 6-pin DFN packages. MAX6328/MAX6346/MAX6347/MAX6348, and MAX6711/MAX6712/MAX6713 Applications Tiny 3-Pin/4-Pin SC70 and 6-Pin DFN Packages Computers Critical P and C Ordering Information Power Monitoring Controllers Portable/Battery- PIN- Intelligent Instruments PART TEMP RANGE Powered Equipment PACKAGE Dual Voltage Systems MAX6381LT D +T -40C to +125C 6 DFN MAX6381XR D +T -40C to +125C 3 SC70 Pin Configurations M AX63 81X R D /V+ T -40C to +125C 3 SC70 MAX6382LT D +T -40C to +125C 6 DFN TOP VIEW GND N.C. V CC MAX6382XR D +T -40C to +125C 3 SC70 65 4 Note: Insert reset threshold suffix (see Reset Threshold table) afterX,X, orLT Insert reset timeout delay (see Reset GND 1 Timeout Delay table) after to complete the part number. MAX6381 MAX6381 Sample stock is generally held on standard versions only (see MAX6382 3V CC MAX6382 Standard Versions table). Standard versions have an order MAX6383 RESET MAX6383 increment requirement of 2500 pieces. Nonstandard versions 2 (RESET) have an order increment requirement of 10,000 pieces. Contact factory for availability of nonstandard versions. 12 3 SC70 +Denotes a lead(Pb)-free/RoHS-compliant package. RESET N.C. N.C /V denotes an automotive qualified part. ( ) IS FOR MAX6382 (RESET) DFN Ordering Information continued at end of data sheet. Typical Operating Circuit appears at end of data sheet. Pin Configurations continued at end of data sheet. Selector Guide appears at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim Direct 1 at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.SC70/DFN, Single/Dual Low-Voltage, Low-Power P Reset Circuits ABSOLUTE MAXIMUM RATINGS V to GND ..........................................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) CC A RESET Open-Drain Output....................................-0.3V to +6.0V 3-Pin SC70 (derate 2.9mW/C above +70C)..............235mW RESET, RESET (push-pull output)..............-0.3V to (V + 0.3V) 4-Pin SC70 (derate 3.1mW/C above +70C)..............245mW CC MR, RESET IN.............................................-0.3V to (V + 0.3V) 6-Pin DFN (derate 2.1mW/C above +70C) ..........167.7mW CC Input Current (V ).............................................................20mA Operating Temperature Range .........................-40C to +125C CC Output Current (all pins) .....................................................20mA Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = full range, T = -40C to +125C, unless otherwise specified. Typical values are at T = +25C.) (Note 1) CC A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range V 1.0 5.5 V CC V = 5.5V, no load 7 13 CC V = 3.6V, no load 6 11 CC V Supply Current I A CC CC V = 2.5V, no load 4 7 CC V = 1.8V, no load 3 6 CC V - V + TH TH T = +25C V A TH 1.5% 1.5% V Reset Threshold CC V V TH (See Reset Thresholds table) V - V + TH TH T = -40C to +125C V A TH 2.5% 2.5% Reset Threshold Tempco V /C 60 ppm/C TH V falling at 10mV/s from V + 100mV CC TH V to Reset Delay 35 s CC to V - 100mV TH D1 1 2 D2 20 40 D3 140 280 Reset Timeout Period MAX6381MAX6389 t D5 280 560 ms RP (See Reset Timeout table) D6 560 1120 D4 1120 2240 D7 1200 2400 D4 140 280 MR timeout period D7 150 300 Reset Timeout Period t ms RP MAX6390 D4 1120 2240 V timeout period CC D7 1200 2400 0.3 x V IL V CC V < 4V TH 0.7 x MR Input Voltage V V IH V CC V 0.8 IL V > 4V TH V 2.4 IH 2 MAX6381MAX6390