MAX16074

19-5112; Rev 0; 1/10 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package General Description 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). 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 Features MAX16072/MAX16073/MAX16074 Ordering Information PART MAX16072RS_ _D_+ MAX16073RS_ _D_+ RESET OUTPUT TYPE Push-Pull, Active-Low Push-Pull, Active-High PINPACKAGE 4 UCSP 4 UCSP 4 UCSP Applications Portable/Battery-Powered Equipment Cell Phones PDAs MP3 Players Digital Cameras MAX16074RS_ _D_+ Open-Drain, Active-Low Note: All devices are specified over the -40NC to +85NC operating temperature range. 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. Typical Operating Circuit VCC VCC VCC µP RESET INPUT GND MR MAX16072 MAX16073 (RESET)/ MAX16074 RESET 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. µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072/MAX16073/MAX16074 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 Operating Voltage Range Supply Current SYMBOL VCC ICC CONDITIONS TA = 0NC to +85NC TA = -40NC to +85NC VCC = 1.8V for VTH P 1.66V VCC = 3.6V, no load VCC falling, TA = +25NC Detector Threshold VTH See Table 1 VCC falling, TA = -40NC to +85NC VTH 1.5% VTH 2.5% MIN 1.0 1.2 0.7 1.0 VTH VTH 6.3 40 0.7 x VCC 0.7 x VCC 25 VCC R 1.2V, ISINK = 100FA VCC R 1.65V, ISINK = 1mA VCC R 1.65V, ISOURCE = 500FA Output-Voltage High VOH VCC R 1.2V, ISOURCE = 50FA Open-Drain RESET Output Leakage Current TIMING MR Minimum Pulse Width MR Glitch Rejection MR to RESET/RESET Propagation Delay VCC to Reset Delay tMPW tEGR tOFF tON tDL (Note 2) (Note 2) MR falling MR rising VCC = (VTH + 100mV) to (VTH -100mV) 0.8 100 1 200 20 2 400 90 Fs ns Fs ns Fs RESET not asserted (Note 2) 0.8 x VCC 0.8 x VCC 0.1 50 75 0.4 0.3 TYP MAX 5.5 5.5 1.2 1.5 VTH + 1.5% VTH + 2.5% UNITS V FA V Detector Threshold Hysteresis Detector Threshold Tempco MR INPUT VHYST DVTH/NC VIH VCC rising, VTH P 1.66V (Note 2) (Note 2) mV ppm/NC MR Input High Voltage VIL MR Pullup Resistance RESET/RESET OUTPUT (Note 3) Output-Voltage Low VOL V kI V V FA 2 ______________________________________________________________________________________ µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package ELECTRICAL CHARACTERISTICS (continued) (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 CONDITIONS VCC rising, VCC = (VTH - 100mV) to (VTH + 100mV) MAX1607_RSD0+ MAX1607_RSD1+ MAX1607_RSD2+ MAX1607_RSD3+ MIN 20 8 34 140 TYP 80 13 52 210 MAX 120 17 69 280 UNITS Fs ms ms ms MAX16072/MAX16073/MAX16074 Reset Active Timeout Period tRP 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. SUPPLY VOLTAGE MAX16072 toc01 SUPPLY CURRENT vs. TEMPERATURE MAX16072 toc02 NORMALIZED RESET THRESHOLD vs. TEMPERATURE NORMALIZED RESET THRESHOLD (%) MAX16072 toc03 5 4 SUPPLY CURRENT (µA) 3 2 1 0 3.0 2.5 SUPPLY CURRENT (µA) 2.0 1.5 1.0 0.5 0 VCC = 3V VCC = 5V 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -40 -15 10 35 60 VCC RISING VCC FALLING VCC = 1.8V -40 -15 10 35 60 85 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) 85 TEMPERATURE (°C) TEMPERATURE (°C) _______________________________________________________________________________________ 3 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072/MAX16073/MAX16074 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) OUTPUT LOW VOLTAGE vs. SINK CURRENT MAX16072 toc04 OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT MAX16072 toc05 MAXIMUM TRANSIENT DURATION vs. RESET THRESHOLD OVERDRIVE 45 TRANSIENT DURATION (µs) 40 35 30 25 20 15 10 5 0 1 10 100 1000 RESET THRESHOLD OVERDRIVE (mV) VRST = 3.08V VRST = 1.63V RESET OCCURS ABOVE LINES MAX16072 toc06 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0 0 2 4 6 8 VCC = 1.8V VCC = 3V VOL (V) 5.0 4.5 4.0 3.5 VOH (V) 3.0 2.5 2.0 1.5 1.0 0.5 0 0 2 4 6 8 VCC = 1.8V VCC = 3V VCC = 5V 50 VCC = 5V 10 12 14 16 18 20 10 12 14 16 18 20 ISINK (mA) ISOURCE (mA) VCC TO RESET PROPAGATION DELAY vs. TEMPERATURE MAX16072 toc07 VCC TO RESET PROPAGATION DELAY vs. TEMPERATURE VOD = OVERDRIVE VOLTAGE 100 PROPAGATION DELAY (µS) MAX16072 toc08 MR TO RESET DELAY (tON) vs. VCC MAX16072 toc09 80 VOD = OVERDRIVE VOLTAGE PROPAGATION DELAY (µs) 60 VOD = 100mV 40 VOD = 200mV 120 150 120 RESET DELAY (ns) 90 60 30 VOD = 10mV 80 60 40 20 VOD = 200mV VCC RISING 0 VOD = 20mV VOD = 100mV 20 VOD = 10mV VOD = 20mV VCC FALLING MR RISING 0 -40 -15 10 35 60 85 TEMPERATURE (°C) -40 -15 10 35 60 85 0 1.650 1.925 2.200 VCC (V) 2.475 2.750 TEMPERATURE (°C) MR TO RESET DELAY (tOFF) vs. VCC MAX16072 toc10 MR TURN-ON MAX16072 toc11 MR TURN-OFF MAX16072 toc12 1.25 1.00 RESET DELAY (µs) 0.75 0.50 0.25 MR FALLING 0 1.650 1.925 2.200 VCC (V) 2.475 MR 1V/div MR 1V/div RESET 1V/div RESET 1V/div 2.750 100ns/div 200ns/div 4 ______________________________________________________________________________________ µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package Bump Configuration MAX16072 MAX16073 MAX16074 1 2 VCC MAX16072/MAX16073/MAX16074 TOP VIEW (BUMP SIDE DOWN) + A GND B RESET/ (RESET) MR UCSP ( ) FOR THE MAX16073 ONLY Bump Description BUMP MAX16072 A1 MAX16073 A1 MAX16074 A1 NAME GND Ground 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. 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. Supply Voltage and Input for the Reset Threshold Monitor 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. FUNCTION B1 — — RESET — B1 — RESET — — B1 RESET A2 A2 A2 VCC B2 B2 B2 MR _______________________________________________________________________________________ 5 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072/MAX16073/MAX16074 Functional Diagrams VCC VCC RESET TIMEOUT RESET (RESET) RESET RESET TIMEOUT MAX16072 MAX16073 MR GND ( ) MAX16073 ONLY MR GND MAX16074 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 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. 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). Supply and Monitored Input (VCC) VTH VCC tMPW VTH + VHYST 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 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. Manual Reset Input (MR) Table 1. Factory Trimmed Reset Thresholds THRESHOLD SUFFIX 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 RESET TRIP THRESHOLD (V) TA = +25NC TYP 1.58 1.63 1.67 1.80 1.90 2.00 2.10 2.20 2.32 2.40 2.50 2.63 2.70 2.80 2.93 3.00 3.08 TA = -40NC to +85NC MIN 1.54 1.60 1.62 1.76 1.85 1.95 2.05 2.145 2.262 2.34 2.437 2.564 2.633 2.63 2.857 2.925 3.003 MAX 1.61 1.66 1.71 1.85 1.95 2.05 2.15 2.25 2.375 2.46 2.562 2.69 2.768 2.87 3.0 3.075 3.15 MAX16072/MAX16073/MAX16074 Applications Information 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). 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. VCC Interfacing to µP with Bidirectional Reset Pins Negative-Going VCC Transients Table 2. Reset Timeout Periods RESET TIMEOUT PERIODS SUFFIX 0 1 2 3 MIN 20 8 34 140 TYP 80 13 52 210 MAX 120 17 69 280 UNITS Fs ms ms ms VCC VCC MAX16074 MR GND RESET µP MOTOROLA 68HCXX RESET INPUT GND Figure 2. Interfacing to µP with Bidirectional Reset Pins _______________________________________________________________________________________ 7 µP Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072/MAX16073/MAX16074 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 4 UCSP PACKAGE CODE R41C1-1 DOCUMENT NO. 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.