MAX16056ATA31+T Maxim Integrated Products, MAX16056ATA31+T Datasheet

IC SUPERVISOR P-P 3.1V 8-TDFN

MAX16056ATA31+T

Manufacturer Part Number
MAX16056ATA31+T
Description
IC SUPERVISOR P-P 3.1V 8-TDFN
Manufacturer
Maxim Integrated Products
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of MAX16056ATA31+T

Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
Adjustable/Selectable
Voltage - Threshold
3.075V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-TDFN Exposed Pad
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16056–MAX16059 are ultra-low-current 125nA
(typ) microprocessor (µP) supervisory circuits that mon-
itor a single system supply voltage. These devices
assert an active-low reset signal whenever the V
supply voltage drops below the factory-trimmed reset
threshold, manual reset is pulled low, or the watchdog
timer runs out (MAX16056/MAX16058). The reset output
remains asserted for an adjustable reset timeout period
after V
trimmed reset threshold voltages are offered from
1.575V to 4.625V in approximately 100mV increments
(see Table 1).
These devices feature adjustable reset and watchdog
timeout using external capacitors. The MAX16056/
MAX16058 contain a watchdog timer with a watchdog
select input (WDS) that multiplies the watchdog timeout
period by 128. The MAX16057/MAX16059 do not have
the watchdog feature.
The MAX16056–MAX16059 are available in either push-
pull or open-drain output-type configurations (see the
Ordering Information ). These devices are fully specified
over the -40°C to +125°C automotive temperature range.
The MAX16056/MAX16058 are available in the 8-pin
TDFN package, and the MAX16057/MAX16059 are avail-
able in the 6-pin TDFN package.
19-4686; Rev 1; 6/10
Typical Operating Circuit appears at end of data sheet.
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.
Portable/Battery-Powered Equipment
PDAs/Cell Phones
MP3 Players/Pagers
Glucose Monitors/Patient Monitors
Metering/HVAC
Automotive Infotainment
CC
rises above the reset threshold. Factory-
125nA Supervisory Circuits with Capacitor-
TOP VIEW
Adjustable Reset and Watchdog Timeouts
________________________________________________________________ Maxim Integrated Products
General Description
RESET
V
CC
1
8
MAX16056
MAX16058
WDS
GND
7
2
TDFN
Applications
SWT
WDI
6
3
EP
SRT
MR
4
5
*CONNECT EXPOSED PAD TO GND.
CC
♦ Ultra-Low 125nA (typ) Supply Current
♦ 1.1V to 5.5V Operating Supply Range
♦ Factory-Set Reset Threshold Options from 1.575V
♦ Capacitor-Adjustable Reset Timeout
♦ Capacitor-Adjustable Watchdog Timeout
♦ Watchdog Timer Capacitor Open Detect Function
♦ Optional Watchdog Disable Function
♦ Manual Reset Input
♦ Guaranteed RESET Valid for V
♦ Push-Pull or Open-Drain RESET Output Options
♦ Power-Supply Transient Immunity
♦ Small, 3mm x 3mm TDFN Package
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
“_ _” represents the two number suffix needed when ordering
the reset threshold voltage value (see Table 1).
Standard versions and their package top marks are shown in
Table 3 at the end of data sheet.
MAX16056ATA_ _+T 8 TDFN-EP*
MAX16058ATA_ _+T 8 TDFN-EP*
MAX16057ATT_ _+T 6 TDFN-EP*
MAX16059ATT_ _+T 6 TDFN-EP*
to 4.625V in Approximately 100mV Increments
(MAX16056/MAX16058)
(MAX16056/MAX16058)
PART
RESET
V
CC
6
1
PIN-
PACKAGE
MAX16057
MAX16059
Ordering Information
TDFN
GND
N.C.
5
2
Pin Configurations
SRT
MR
4
3
EP
CC
Open-Drain
Open-Drain
Push-Pull
Push-Pull
OUTPUT
RESET
≥ 1.1V
Features
WATCH-
TIMER
DOG
Yes
Yes
No
No
1

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MAX16056ATA31+T Summary of contents

Page 1

... RESET GND TDFN ________________________________________________________________ Maxim Integrated Products 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. ♦ Ultra-Low 125nA (typ) Supply Current ♦ 1.1V to 5.5V Operating Supply Range ♦ Factory-Set Reset Threshold Options from 1.575V ...

Page 2

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V CC SRT, SWT, WDS, MR, WDI, to GND ...........-0. RESET (Push-Pull) to GND .........................-0. RESET (Open-Drain) to ...

Page 3

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts ELECTRICAL CHARACTERISTICS (continued 1.2V to 5.5V unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL SRT Ramp ...

Page 4

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts (V = 2.5V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 10 2.23V TH 1 -40NC +125NC A ...

Page 5

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts (V = 2.5V +25°C, unless otherwise noted RESET OUTPUT-LOW VOLTAGE vs. SINK CURRENT 0.30 0. 2. 1.8V CC 0.15 0.10 ...

Page 6

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts PIN NAME MAX16056/ MAX16057/ MAX16058 MAX16059 RESET GND 3 — SWT SRT 6 — WDI 7 — WDS ...

Page 7

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Detailed Description The MAX16056–MAX16059 are ultra-low-current 125nA (typ) µP supervisory circuits that monitor a single sys- tem supply voltage. These devices assert an active-low reset signal whenever the V supply ...

Page 8

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts HYST RESET MR Figure 1. RESET Timing Relationship V CC WDI RESET 0V NORMAL MODE (WDS = GND) Figure ...

Page 9

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Applications Information Selecting the Reset Timeout Capacitor The reset timeout period is adjustable to accommodate a variety of µP applications. To adjust the reset timeout period (t ), connect a ...

Page 10

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts BAT 0.1μF 1MΩ MANUAL POWER- RESET V CC1 Figure 4. Using MAX16056–MAX16059 to Reduce System Power Consumption 10 ______________________________________________________________________________________ V CC RESET MAX16056 MR SWT SRT GND WDS ...

Page 11

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Interfacing to Other Voltages for Logic Compatibility The open-drain RESET output can be used to interface to a µP with other logic levels. The open-drain output is connected to a ...

Page 12

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Table 1. Threshold Suffix Guide SUFFIX ...

Page 13

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Table 2. Capacitor Selection Guide CAPACITANCE (pF 100 120 150 180 220 270 330 390 470 560 680 820 1000 1200 1500 1800 2200 2700 ...

Page 14

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Table 2. Capacitor Selection Guide (continued) CAPACITANCE (pF) 22,000 27,000 33,000 39,000 47,000 56,000 68,000 82,000 100,000 120,000 150,000 180,000 220,000 270,000 330,000 390,000 470,000 680,000 820,000 1,000,000 1,500,000 2,200,000 ...

Page 15

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts Table 3. Standard Versions PART MAX16056ATA17+ MAX16056ATA23+ MAX16056ATA26+ MAX16056ATA29+ MAX16056ATA31+ MAX16056ATA46+ MAX16057ATT17+ MAX16057ATT23+ MAX16057ATT26+ MAX16057ATT29+ MAX16057ATT31+ MAX16057ATT46+ MAX16058ATA16+ MAX16058ATA22+ MAX16058ATA26+ MAX16058ATA29+ MAX16058ATA31+ MAX16058ATA44+ MAX16059ATT16+ MAX16059ATT22+ MAX16059ATT26+ MAX16059ATT29+ MAX16059ATT31+ MAX16059ATT44+ ______________________________________________________________________________________ ...

Page 16

Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts BAT 1MΩ MANUAL RESET Chip Information PROCESS: BiCMOS 16 ______________________________________________________________________________________ 0.1μ MAX16056 MR SRT GND SWT C C SWT SRT For the latest package outline information and land ...

Page 17

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2010 Maxim Integrated Products ...

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