MAX6705ATKA+T Maxim Integrated Products, MAX6705ATKA+T Datasheet

IC SUPERVISOR MPU LV SOT23-8

MAX6705ATKA+T

Manufacturer Part Number
MAX6705ATKA+T
Description
IC SUPERVISOR MPU LV SOT23-8
Manufacturer
Maxim Integrated Products
Type
Multi-Voltage Supervisorr
Datasheet
1.MAX6701TKAT.pdf (12 pages)

Specifications of MAX6705ATKA+T

Number Of Voltages Monitored
2
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
3.08V, Adj
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-8
Monitored Voltage
2.5 V, 3 V, 3.3 V, 5 V
Undervoltage Threshold
3 V
Overvoltage Threshold
3.15 V
Output Type
Active Low, Push-Pull
Manual Reset
Resettable
Watchdog
Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
300 ms
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.2 V
Supply Current (typ)
12 uA
Maximum Power Dissipation
714 mW
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Power Fail Detection
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX6701–MAX6708 microprocessor (µP) supervisory
circuits reduce the complexity and components required
to monitor power-supply functions in µP systems. These
devices significantly improve system reliability and accu-
racy compared to separate ICs or discrete components.
The MAX6701–MAX6708 family provides four functions:
a reset output during power-up, power-down, and
brownout conditions; an independent watchdog output
that goes low if the watchdog input has not been toggled
within 1.6s; a 0.62V threshold detector for power-fail
warning; and an active-low manual reset input.
The MAX6701–MAX6708 family offers several pinout
options to accommodate a variety of multivoltage micro-
processor supervision applications.
The MAX6701(A)/MAX6702(A)/MAX6703(A) monitor
three supply voltages (one fixed threshold and two
adjustable) to drive a single reset output and include a
manual reset input and a watchdog timer with an inde-
pendent output. The MAX6704 monitors a single-supply
voltage to drive complementary reset outputs and
includes an independent adjustable power-fail-in/power-
fail-out comparator, a manual reset input, and a reset-
based watchdog timer. The MAX6705(A)/MAX6706(A)/
MAX6707(A) monitor a single-supply voltage to drive a
single reset output and include an independent
adjustable power-fail-in/power-fail-out comparator, a
manual reset input, and a watchdog timer with an inde-
pendent output. The MAX6708 is the same as the
MAX6704 but without the watchdog timer function.
See the Detailed Description for differences between
non-A and A versions.
19-1952; Rev 3; 12/05
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Voltage, SOT23 µP Supervisors with Power-
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical µP Power Monitoring
White Goods
Networking
Telecommunications
Fail In/Out, Manual Reset, and Watchdog Timer
________________________________________________________________ Maxim Integrated Products
General Description
Applications
o Small 8-Pin SOT23 Package
o Precision Monitoring of +5.0V, +3.3V, +3.0V, +2.5V
o 140ms Reset Timeout Delay
o Power-Fail Input with Independent Output;
o Dual Adjustable Reset Input for Triple-Voltage
o 1.6s Watchdog Timeout Period
o Independent Watchdog Output
o Manual Reset Input
o Four Reset Output Stage Options
o Guaranteed Reset Valid to V
o Immune to Short Falling V
o Low Cost, Few External Components
Insert the desired suffix letter (from the Threshold Suffix Guide
table) into the blank to complete the part number. All devices
must be ordered in increments of 2500 pieces. Sample stock is
typically held on standard versions only. Contact factory for
availability.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Ordering Information continued at end of data sheet.
MAX6701_KA-T
MAX6701A_KA-T
Pin Configurations continued at end of data sheet.
Supply Voltages
Monitor Inputs Down to 0.62V (MAX6704–MAX6708)
Monitoring (MAX6701(A)/MAX6702(A)/MAX6703(A))
(MAX6701(A)–MAX6707(A))
(MAX6701(A)/MAX6702(A)/MAX6703(A)/
MAX6705(A)/MAX6706(A)/MAX6707(A))
TOP VIEW
( ) ARE FOR MAX6702(A) ONLY.
Active Low Push-Pull (MAX6701(A), MAX6705(A))
Active Low Open Drain (MAX6703(A), MAX6707(A))
Active High Push-Pull (MAX6702(A), MAX6706(A))
Dual Active Low/High Push-Pull (MAX6704,
MAX6708)
PART
RST_IN1
GND
V
MR
CC
1
2
4
3
-40°C to +125°C
-40°C to +125°C
Ordering Information
TEMP RANGE
MAX6701(A)
MAX6702(A)
MAX6703(A)
SOT23
Pin Configurations
CC
CC
Transients
8
7
6
5
= 1V
WDO
WDI
RESET (RESET)
RST_IN2
PIN-PACKAGE
8 SOT23-8
8 SOT23-8
Features
1

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MAX6705ATKA+T Summary of contents

Page 1

... Networking Telecommunications Typical Operating Circuit and Selector Guide appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. o Small 8-Pin SOT23 Package o Precision Monitoring of +5.0V, +3.3V, +3.0V, +2.5V ...

Page 2

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer ABSOLUTE MAXIMUM RATINGS V ........................................................................-0.3V to +6.0V CC RESET, WDO, PFO ...........................-0.3V to +6.0V Open-Drain Push-Pull RESET, RESET, WDO, PFO ........-0. MR, WDI, PFI, RST_IN1, ...

Page 3

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer ELECTRICAL CHARACTERISTICS (continued +4.25V to +5.5V for L/M versions -40°C to +125°C, unless otherwise specified. Typical values are ...

Page 4

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 20 16 MAX6705( MAX6708 ...

Page 5

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer PIN MAX6701(A) MAX6705(A) MAX6702(A) MAX6704 MAX6706(A) MAX6703(A) MAX6707( — — — ...

Page 6

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer PIN MAX6701(A) MAX6705(A) MAX6702(A) MAX6706(A) MAX6704 MAX6703(A) MAX6707(A) 8 — — — 5 — — *RESET active-high for the MAX6702(A)/MAX6706(A). Detailed Description ...

Page 7

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer 6 WATCHDOG WDI TIMER V CC 50kΩ RESET GENERATOR MAX6705(A) V REF MAX6706(A) 4 MAX6707(A) PFI 0.62V GND ARE ...

Page 8

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer Standard- vs. A-Version Comparison The MAX6701/MAX6702/MAX6703/MAX6705/MAX6706/ MAX6707s’ WDO latches low when one of the following events occurs: • The watchdog timer times out (1.6s, typ). • V ...

Page 9

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer t t WDI WD +5V WDI 0V +5V WDO 0V +5V RESET 0V +5V (RESET ARE FOR MAX6702(A)/MAX6706(A) ONLY. Figure 7. ...

Page 10

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer MAX6701(A) MAX6704 MAX6705(A) MAX6708 RESET Figure 9. RESET Valid to Ground Circuit RESET RESET PART PP LOW PP HIGH ✔ MAX6701 ✔ MAX6701A* MAX6702 — MAX6702A* — ...

Page 11

Low-Voltage, SOT23 µP Supervisors with Power- Fail In/Out, Manual Reset, and Watchdog Timer TOP VIEW RESET RESET CC MAX6704 GND 3 6 WDI PFI 4 5 PFO SOT23 Typical Operating Circuit UNREGULATED DC DC-DC ...

Page 12

... 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products SEE DETAIL "A" ...

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