Rainbow Electronics MAX16074 User Manual
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).
Applications
Portable/Battery-Powered Equipment
Cell Phones
PDAs
MP3 Players
Digital Cameras
Typical Operating Circuit
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
PART 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 4 UCSP
Note: All devices are specified over the -40NC to +85NC operat-
ing 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.
PINPACKAGE
MAX16072/MAX16073/MAX16074
+Denotes a lead(Pb)-free/RoHS-compliant package.
V
CC
RESET
INPUT
V
µP
GND
CC
V
CC
MAX16072
MAX16073
MR
MAX16074
( ) FOR THE MAX16073 ONLY
UCSP is a trademark of Maxim Integrated Products, Inc.
_______________________________________________________________ Maxim Integrated Products 1
(RESET)/
RESET
GND
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
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
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 CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
Supply Current I
Detector Threshold V
Detector Threshold Hysteresis V
Detector Threshold Tempco
MR INPUT
MAX16072/MAX16073/MAX16074
MR Input High Voltage
MR Pullup Resistance
RESET/RESET OUTPUT (Note 3)
Output-Voltage Low V
Output-Voltage High V
Open-Drain RESET Output
Leakage Current
TIMING
MR Minimum Pulse Width
MR Glitch Rejection
MR to RESET/RESET
Propagation Delay
VCC to Reset Delay t
CC
CC
TH
HYST
DVTH/NC
V
IH
V
IL
OL
OH
t
MPW
t
EGR
t
OFF
t
ON
DL
TA = 0NC to +85NC
TA = -40NC to +85NC
VCC = 1.8V for VTH P 1.66V
VCC = 3.6V, no load 1.0 1.5
See Table 1
VCC rising, VTH P 1.66V (Note 2)
(Note 2) 40
VCC R 1.2V, I
VCC R 1.65V, I
VCC R 1.65V, I
VCC R 1.2V, I
RESET not asserted (Note 2)
(Note 2) 0.8
(Note 2) 100 ns
MR falling
MR rising
VCC = (V
TH
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range ............................ -65NC to +150NC
Junction Temperature .....................................................+150NC
Soldering Temperature (reflow) ......................................+260NC
1.0 5.5
1.2 5.5
0.7 1.2
VCC falling, TA = +25NC
VCC falling, TA = -40NC to
+85NC
= 100FA
SINK
= 1mA
SINK
SOURCE
SOURCE
+ 100mV) to (VTH -100mV) 20 90
= 500FA
= 50FA
VTH -
1.5%
VTH -
2.5%
0.7 x
V
CC
25 50 75
0.8 x
V
CC
0.8 x
V
CC
V
V
200 400 ns
VTH +
TH
1.5%
VTH +
TH
2.5%
6.3 mV
0.7 x
V
0.4
0.3
0.1
1 2
CC
V
FA
V
ppm/NC
V
kI
V
V
FA
Fs
Fs
Fs
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 MIN TYP MAX UNITS
MAX1607_RSD0+ 20 80 120
Reset Active Timeout Period t
RP
VCC rising, VCC
= (VTH - 100mV)
to (VTH + 100mV)
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
(T
= +25°C, unless otherwise noted.)
A
Fs
MAX16072/MAX16073/MAX16074
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
5
4
3
2
SUPPLY CURRENT (µA)
1
0
1.0 5.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE
3.0
2.5
MAX16072 toc01
2.0
1.5
1.0
SUPPLY CURRENT (µA)
0.5
0
5.04.54.03.53.02.52.01.5
VCC = 1.8V
-40 85
TEMPERATURE (°C)
VCC = 5V
VCC = 3V
603510-15
MAX16072 toc02
NORMALIZED RESET THRESHOLD (%)
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-40 85
TEMPERATURE (°C)
VCC FALLING
VCC RISING
MAX16072 toc03
603510-15
_______________________________________________________________________________________ 3
Loading...