19-5112; Rev 0; 1/10 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package The MAX16072/MAX16073/MAX16074 ultra-small, ultralow-power, microprocessor (µP) supervisory circuits feature a precision band-gap reference, comparator, and internally trimmed resistors that set the threshold voltage. Designed to monitor the system supply voltage and assert an output during power-up, power-down, and brownout conditions, these devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltage from 1.8V to 3.6V. The MAX16072 has a push-pull, active-low reset output, the MAX16073 has a push-pull, active-high reset output, and the MAX16074 has an open-drain active-low reset output. The devices are designed to ignore fast transients on VCC. The devices also include a manual reset input (MR). The MAX16072/MAX16073/MAX16074 are available in a 1mm x 1mm, space-saving, 4-bump, chip-scale package (UCSPTM). Applications Portable/Battery-Powered Equipment Features S Ultra-Low, 0.7µA Supply Current S Ultra-Small (1mm x 1mm), 4-Bump UCSP S 20µs, 8ms, 34ms, and 140ms Reset Timeout Options Available S Factory-Trimmed Reset Thresholds Available from 1.58V to 3.08V in Approximately 100mV Increments S Q2.5% Threshold Accuracy Over Temperature S Manual Reset Input S Guaranteed Reset Valid to VCC = 1.0V S Immune to Short VCC Transient Ordering Information RESET OUTPUT TYPE MAX16072RS_ _D_+ Push-Pull, Active-Low 4 UCSP MAX16073RS_ _D_+ Push-Pull, Active-High 4 UCSP MAX16074RS_ _D_+ Open-Drain, Active-Low Cell Phones PINPACKAGE PART 4 UCSP Note: All devices are specified over the -40NC to +85NC operating temperature range. PDAs MP3 Players Digital Cameras Typical Operating Circuit Insert the desired suffix numbers (from Table 1) into the blanks “RS_ _D” to indicate the reset trip threshold. Insert the desired suffix number (from Table 2) into the blank ”D_+” to indicate the reset timeout. Minimum order quantity may apply. +Denotes a lead(Pb)-free/RoHS-compliant package. VCC VCC MR MAX16072 MAX16073 (RESET)/ MAX16074 RESET GND VCC µP RESET INPUT GND ( ) FOR THE MAX16073 ONLY UCSP is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX16072/MAX16073/MAX16074 General Description MAX16072/MAX16073/MAX16074 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) VCC, MR...................................................................-0.3V to +6V RESET, RESET Push-Pull.......................... -0.3V to (VCC + 0.3V) RESET Open-Drain...................................................-0.3V to +6V Output Current (all pins).................................................. Q20mA Continuous Power Dissipation (TA = +70NC) 4-Bump UCSP (derate 3mW/NC above +70NC)...........239mW Operating Temperature Range........................... -40NC to +85NC Storage Temperature Range............................. -65NC to +150NC Junction Temperature......................................................+150NC Soldering Temperature (reflow).......................................+260NC 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 (VCC = 1.5V to 2.75V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC and VCC = 3.6V.) (Note 1) PARAMETER SYMBOL Operating Voltage Range VCC Supply Current ICC Detector Threshold Detector Threshold Hysteresis Detector Threshold Tempco VTH VHYST DVTH/NC CONDITIONS MIN TYP MAX TA = 0NC to +85NC 1.0 5.5 TA = -40NC to +85NC 1.2 5.5 VCC = 1.8V for VTH P 1.66V 0.7 1.2 VCC = 3.6V, no load 1.0 1.5 VTH VTH + 1.5% VTH VTH + 2.5% See Table 1 VCC falling, TA = +25NC VTH 1.5% VCC falling, TA = -40NC to +85NC VTH 2.5% UNITS V FA V VCC rising, VTH P 1.66V (Note 2) 6.3 mV (Note 2) 40 ppm/NC MR INPUT 0.7 x VCC VIH MR Input High Voltage 0.7 x VCC VIL 25 MR Pullup Resistance 50 75 V kI RESET/RESET OUTPUT (Note 3) Output-Voltage Low Output-Voltage High VOL VCC R 1.2V, ISINK = 100FA 0.4 VCC R 1.65V, ISINK = 1mA 0.3 VCC R 1.65V, ISOURCE = 500FA 0.8 x VCC VCC R 1.2V, ISOURCE = 50FA 0.8 x VCC VOH Open-Drain RESET Output Leakage Current V V 0.1 RESET not asserted (Note 2) FA TIMING MR Minimum Pulse Width tMPW (Note 2) MR Glitch Rejection tEGR (Note 2) MR to RESET/RESET Propagation Delay tOFF MR falling tON VCC to Reset Delay tDL MR rising VCC = (VTH + 100mV) to (VTH -100mV) 0.8 Fs 100 ns 1 2 Fs 200 400 ns 20 90 Fs 2 _______________________________________________________________________________________ µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package (VCC = 1.5V to 2.75V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC and VCC = 3.6V.) (Note 1) PARAMETER SYMBOL Reset Active Timeout Period CONDITIONS VCC rising, VCC = (VTH - 100mV) to (VTH + 100mV) tRP MIN TYP MAX MAX1607_RSD0+ 20 80 120 UNITS Fs MAX1607_RSD1+ 8 13 17 ms MAX1607_RSD2+ 34 52 69 ms MAX1607_RSD3+ 140 210 280 ms Note 1: Production testing done at TA = +25NC only. Overtemperature limits are guaranteed by design and are not production tested. Note 2: Guaranteed by design. Note 3: Reset is guaranteed down to VCC = 1.0V. Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. TEMPERATURE 3 2 1 VCC = 5V 2.0 VCC = 3V 1.5 1.0 0.5 0 VCC = 1.8V 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) -40 -15 10 35 TEMPERATURE (°C) 60 85 0.3 MAX16072 toc03 MAX16072 toc02 2.5 SUPPLY CURRENT (µA) 4 SUPPLY CURRENT (µA) 3.0 MAX16072 toc01 5 NORMALIZED RESET THRESHOLD vs. TEMPERATURE NORMALIZED RESET THRESHOLD (%) SUPPLY CURRENT vs. SUPPLY VOLTAGE 0.2 0.1 VCC FALLING 0 -0.1 VCC RISING -0.2 -0.3 -40 -15 10 35 60 85 TEMPERATURE (°C) _______________________________________________________________________________________ 3 MAX16072/MAX16073/MAX16074 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT 1.50 4.5 4.0 1.00 VOH (V) VCC = 5V 0.75 0.25 0 2 4 6 8 VCC = 1.8V 40 35 30 20 15 10 0.5 5 0 2 4 6 8 VRST = 1.63V 25 1.0 0 10 12 14 16 18 20 VRST = 3.08V 0 10 12 14 16 18 20 10 1 100 1000 ISINK (mA) ISOURCE (mA) RESET THRESHOLD OVERDRIVE (mV) VCC TO RESET PROPAGATION DELAY vs. TEMPERATURE VCC TO RESET PROPAGATION DELAY vs. TEMPERATURE MR TO RESET DELAY (tON) vs. VCC 60 VOD = 100mV VOD = 200mV 40 VOD = 10mV VOD = 20mV VOD = OVERDRIVE VOLTAGE 100 VOD = 10mV 80 VOD = 100mV 60 150 VOD = 20mV 40 120 VCC FALLING MR RISING 0 1.650 0 -15 10 35 60 60 VCC RISING 0 -40 90 30 VOD = 200mV 20 MAX16072 toc09 120 RESET DELAY (ns) VOD = OVERDRIVE VOLTAGE PROPAGATION DELAY (µS) MAX16072 toc07 80 PROPAGATION DELAY (µs) 2.5 1.5 VCC = 1.8V 0 3.0 2.0 VCC = 3V 0.50 VCC = 3V RESET OCCURS ABOVE LINES 45 MAX16072 toc08 VOL (V) 1.25 20 VCC = 5V 3.5 50 MAX16072 toc06 1.75 MAX16072 toc05 5.0 MAX16072 toc04 2.00 MAXIMUM TRANSIENT DURATION vs. RESET THRESHOLD OVERDRIVE TRANSIENT DURATION (µs) OUTPUT LOW VOLTAGE vs. SINK CURRENT 85 -40 -15 10 35 TEMPERATURE (°C) TEMPERATURE (°C) MR TO RESET DELAY (tOFF) vs. VCC MR TURN-ON 60 85 1.925 2.200 MAX16072 toc10 1.00 2.475 2.750 VCC (V) MR TURN-OFF MAX16072 toc11 1.25 RESET DELAY (µs) MAX16072/MAX16073/MAX16074 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072 toc12 MR 1V/div MR 1V/div RESET 1V/div RESET 1V/div 0.75 0.50 0.25 MR FALLING 0 1.650 1.925 2.200 2.475 2.750 100ns/div 200ns/div VCC (V) 4 _______________________________________________________________________________________ µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072 MAX16073 MAX16074 TOP VIEW (BUMP SIDE DOWN) 1 2 A GND VCC B RESET/ (RESET) MR + UCSP ( ) FOR THE MAX16073 ONLY Bump Description BUMP MAX16072 MAX16073 MAX16074 A1 A1 A1 B1 — — B1 — — NAME GND FUNCTION Ground RESET Active-Low Push-Pull Reset Output. RESET changes from high to low when VCC drops below the detector threshold (VTH) or MR is pulled low. RESET remains low for the reset timeout period after VCC exceeds VTH and MR is high. When MR is low, RESET is low. RESET Active-High Push-Pull Reset Output. RESET changes from low to high when VCC drops below the detector threshold (VTH) or MR is pulled low. RESET remains high for the reset timeout period after VCC exceeds VTH and MR is high. When MR is low, RESET is high. Active-Low Open-Drain Reset Output. RESET changes from highimpedance to active-low when VCC drops below the detector threshold (VTH) or MR is pulled low. RESET remains low for the reset timeout period after VCC exceeds the reset threshold and MR is high. When MR is low, RESET is low. — — B1 RESET A2 A2 A2 VCC Supply Voltage and Input for the Reset Threshold Monitor MR Active-Low Manual-Reset Input. Drive low to force a reset. Reset remains active as long as MR is low and for the reset timeout period (if applicable) after MR is driven high. MR has an internal pullup resistor connected to VCC, and may be left unconnected if not used. B2 B2 B2 _______________________________________________________________________________________ 5 MAX16072/MAX16073/MAX16074 Bump Configuration MAX16072/MAX16073/MAX16074 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package Functional Diagrams VCC VCC RESET (RESET) RESET TIMEOUT RESET RESET TIMEOUT MAX16072 MAX16073 MAX16074 MR MR GND GND ( ) MAX16073 ONLY Detailed Description The MAX16072/MAX16073/MAX16074 ultra-small, ultralow-power, µP supervisory circuits feature a precision band-gap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. Designed to monitor the system supply voltage and an output during power-up, power-down, and brownout conditions, these devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltage from 1.8V to 3.6V. The MAX16072 has a push-pull active-low reset output, the MAX16073 has a push-pull active-high reset output, and the MAX16074 has an open-drain active-low reset Supply and Monitored Input (VCC) The MAX16072/MAX16073/MAX16074 operate with a VCC supply voltage from 1.2V to 2.75V. VCC has a rising threshold of VTH + VHYST and a falling threshold of VTH. When VCC rises above VTH + VHYST and MR is high, RESET goes high (RESET goes low) after the reset timeout period (tRP). See Figure 1. When VCC falls below VTH, RESET goes low (RESET goes high) after a fixed delay (tRD). VTH + VHYST VTH VCC output. The devices are designed to ignore fast transients on VCC. The devices also include a manual reset input (MR). When MR is low, reset is asserted. When MR is high and VCC is above the detector threshold (VTH), reset is not asserted. tMPW t < tEGR t < tMPW MR RESET tON tDL tRP tOFF tON Figure 1. MAX16072/MAX16073/MAX16074 Timing Diagram 6 _______________________________________________________________________________________ µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package Table 1. Factory Trimmed Reset Thresholds TA = +25NC TYP MIN MAX 15 1.58 1.54 1.61 16 1.63 1.60 1.66 17 1.67 1.62 1.71 18 1.80 1.76 1.85 19 1.90 1.85 1.95 20 2.00 1.95 2.05 21 2.10 2.05 2.15 22 2.20 2.145 2.25 23 2.32 2.262 2.375 24 2.40 2.34 2.46 25 2.50 2.437 2.562 26 2.63 2.564 2.69 27 2.70 2.633 2.768 28 2.80 2.63 2.87 29 2.93 2.857 3.0 30 3.00 2.925 3.075 31 3.08 3.003 3.15 Applications Information Interfacing to µP with Bidirectional Reset Pins Since RESET on the MAX16074 is open-drain, this device interfaces easily with FPs that have bidirectional reset pins. Connecting the FP supervisor’s RESET output directly to the FP’s RESET pin with a single pullup resistor allows either device to assert reset (Figure 2). Negative-Going VCC Transients The MAX16072/MAX16073/MAX16074 family of devices is relatively immune to short-duration, negativegoing VCC transients (glitches). The Typical Operating Characteristics show the Maximum Transient Duration vs. Reset Threshold Overdrive graph, for which reset pulses are not generated. The graph shows the maximum pulse width that a negative-going VCC transient may typically have when issuing a reset signal. As the amplitude of the transient increases, the maximum allowable pulse width decreases. RESET TRIP THRESHOLD (V) THRESHOLD SUFFIX TA = -40NC to +85NC Table 2. Reset Timeout Periods RESET TIMEOUT PERIODS SUFFIX MIN TYP MAX UNITS 0 20 80 120 Fs 1 8 13 17 ms 2 34 52 69 ms 3 140 210 280 ms VCC VCC VCC MAX16074 µP MOTOROLA 68HCXX RESET MR GND RESET INPUT GND Figure 2. Interfacing to µP with Bidirectional Reset Pins _______________________________________________________________________________________ 7 MAX16072/MAX16073/MAX16074 Manual Reset Input (MR) Many FP-based products require manual-reset capability, allowing the operator, a test technician, or external logic circuit to initiate a reset. A logic-low on MR asserts reset. Reset remains asserted while MR is low, and for the reset active timeout period (tRP) or delay (tON) after MR returns high. This input has an internal 50kI pullup resistor, so it can be left unconnected if it is not used. MR can be driven with TTL or CMOS logic levels, or with open-drain/collector outputs. For manual operation, connect a normally open momentary switch from MR to GND; external debouncing circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environment, connect a 0.1FF capacitor from MR to ground to provide additional noise immunity. MAX16072/MAX16073/MAX16074 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 4 UCSP R41C1-1 21-0242 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 © Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.