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19-5112; Rev 0; 1/10
P Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package
General Description
The MAX16072/MAX16073/MAX16074 ultra-small, ultralow-power, microprocessor (P) 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, 0.7A Supply Current S Ultra-Small (1mm x 1mm), 4-Bump UCSP S 20s, 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 P 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.
P 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
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P 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 = +25C, 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 (A) 3 2 1 0
3.0 2.5 SUPPLY CURRENT (A) 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)
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P Supervisory Circuits in 4-Bump (1mm x 1mm) Chip-Scale Package MAX16072/MAX16073/MAX16074
Typical Operating Characteristics (continued)
(TA = +25C, 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 (s) 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 (S)
MAX16072 toc08
MR TO RESET DELAY (tON) vs. VCC
MAX16072 toc09
80 VOD = OVERDRIVE VOLTAGE PROPAGATION DELAY (s) 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 (s) 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
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P 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
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P 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, P 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
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P 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 P 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
P MOTOROLA 68HCXX
RESET INPUT GND
Figure 2. Interfacing to P with Bidirectional Reset Pins _______________________________________________________________________________________ 7
P 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.
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(c)
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