MAX6405BS43-T Maxim Integrated, MAX6405BS43-T Datasheet

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MAX6405BS43-T

Manufacturer Part Number
MAX6405BS43-T
Description
Supervisory Circuits
Manufacturer
Maxim Integrated
Series
MAX6400, MAX6401, MAX6402, MAX6403, MAX6404, MAX6405r
Datasheet

Specifications of MAX6405BS43-T

Number Of Voltages Monitored
1
Monitored Voltage
1.2 V to 5.5 V
Undervoltage Threshold
4.235 V
Overvoltage Threshold
4.364 V
Output Type
Active Low, Open Drain
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
280 ms
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
UCSP
Chip Enable Signals
No
Maximum Power Dissipation
303 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
1 uA
Supply Voltage - Min
1 V
The MAX6400–MAX6405 is a family of ultra-low power
microprocessor (µP) supervisory circuits used for moni-
toring battery, power-supply, and regulated system
voltages. Each device contains a precision bandgap
reference comparator and is trimmed to specified trip
threshold voltages. These devices provide excellent cir-
cuit reliability and low cost by eliminating external com-
ponents and adjustments when monitoring system
voltages from 2.5V to 5.0V. A manual reset input is also
included.
The MAX6400–MAX6405 assert a reset signal whenev-
er the V
old. These devices are differentiated by their output
logic configurations and preset threshold voltages. The
MAX6400/MAX6403 (push-pull) and the MAX6402/
MAX6405 (open-drain) have an active-low reset (RESET
is logic low when V
MAX6404 have an active-high push-pull output (RESET
is logic high when V
guaranteed to be in the correct output logic state for
V
fast transients on V
MAX6402 have voltage thresholds between 2.20V and
3.08V in approximately 100mV increments. The
MAX6403/MAX6404/MAX6405 have voltage thresholds
between 3.30V and 4.63V in approximately 100mV
increments.
Ultra-low supply current of 500nA (MAX6400/MAX6401/
MAX6402) makes these parts ideal for use in portable
equipment. These devices are available in 4-bump
chip-scale packages (UCSP™)
Portable/Battery-Powered Equipment
Cell Phones
PDAs
MP3 Players
Pagers
19-2043; Rev 1; 8/01
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.
CC
MAX6400
MAX6401
MAX6402
MAX6403
MAX6404
MAX6405
PART
down to 1V. The reset circuit is designed to ignore
CC
supply voltage falls below a preset thresh-
2.20 to 3.08
2.20 to 3.08
2.20 to 3.08
3.30 to 4.63
3.30 to 4.63
3.30 to 4.63
NOMINAL
V
µP Supervisory Circuits in 4-Bump (2
________________________________________________________________ Maxim Integrated Products
TH
CC
(V)
CC
CC
General Description
is below V
. The MAX6400/MAX6401/
is below V
Selector Guide
Open-Drain, Active-Low
Open-Drain, Active-Low
Push-Pull, Active-High
Push-Pull, Active-High
Push-Pull, Active-Low
Push-Pull, Active-Low
Applications
RESET/RESET
OUTPUT TYPE
TH
TH
). The MAX6401/
). All parts are
o Ultra-Small 4-Bump (2
o 70% Smaller Than SC70 Package
o Ultra-Low 500nA (typ) Supply Current
o Factory-Trimmed Reset Thresholds from 2.20V to
o ±2.5% Threshold Accuracy -40°C to +85°C
o Factory-Set 100ms (min) Reset Timeout Period
o Manual Reset Input
o Guaranteed Reset Valid to V
o Three Reset Output Logic Options: Active-Low
o Immune to Short V
o No External Components
____________________________Features
The MAX6400–MAX6405 are available in factory-set V
thresholds from 2.20V to 4.63V, in approximately 0.1V incre-
ments. Choose the desired reset-threshold suffix from Table 1
and insert it in the blank space following “S”. There are 21 stan-
dard versions with a required order increment of 2500 pieces.
Sample stock is generally held on the standard versions only
(Table 1). Required order increment is 10,000 pieces for non-
standard versions (Table 2). Contact factory for availability. All
devices available in tape-and-reel only.
UCSP reliability is integrally linked to the user’s assembly
methods, circuit board material, and environment. Refer to the
UCSP Reliability Notice in the UCSP Reliability section of this
data sheet for more information.
Pin Configuration appears at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX6400BS_ _-T
MAX6401BS_ _-T
MAX6402BS_ _-T
MAX6403BS_ _-T
MAX6404BS_ _-T
MAX6405BS_ _-T
(Package Pending Full Qualification—Expected
Completion Date 6/30/01. See UCSP Reliability
Section for More Details.)
(MAX6400/MAX6401/MAX6402)
4.63V in Approximately 100mV Increments
Push-Pull, Active-High Push-Pull, and Active-Low
Open-Drain.
PART
Chip-Scale Package
TEMP. RANGE
-40
-40
-40
-40
-40
-40
Ordering Information
CC
o
o
o
o
o
o
C to +85
C to +85
C to +85
C to +85
C to +85
C to +85
Transients
2) Chip-Scale Package,
CC
o
o
o
o
o
o
C
C
C
C
C
C
= 1.0V
PIN-PACKAGE
UCSP-4
UCSP-4
UCSP-4
UCSP-4
UCSP-4
UCSP-4
CC
reset
2)
1

Related parts for MAX6405BS43-T

MAX6405BS43-T Summary of contents

Page 1

... Refer to the OUTPUT TYPE UCSP Reliability Notice in the UCSP Reliability section of this data sheet for more information. Pin Configuration appears at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. ✕ Chip-Scale Package, ✕ ...

Page 2

... Supervisory Circuits in 4-Bump (2 Chip-Scale Package ABSOLUTE MAXIMUM RATINGS All voltages measured with respect to GND, unless otherwise noted. V ...........................................................................-0.3V to +6V CC RESET, RESET (push-pull) .........................-0. RESET (open-drain)..................................................-0.3V to +6V MR ..............................................................-0. Input/Output into Any Pin ....................................................20mA 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 ...

Page 3

... Supervisory Circuits in 4-Bump (2 ELECTRICAL CHARACTERISTICS (continued 1.0V to 5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL RESET Output Voltage Low (MAX6400/MAX6402/MAX6403/ MAX6405) RESET Output Voltage High (MAX6400/MAX6403) RESET Output Voltage (MAX6401/MAX6404) Open-Drain RESET Output Leakage Current (Note 2) Note 1: Production testing done at +25° ...

Page 4

... Supervisory Circuits in 4-Bump (2 Chip-Scale Package (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 1.4 1 1.0 0 3.3V CC 0.6 0 1.2V CC 0.2 0 -40 - TEMPERATURE (°C) POWER-UP RESET TIMEOUT vs. TEMPERATURE 210 200 190 180 170 160 150 140 130 -40 - TEMPERATURE (°C) 4 _______________________________________________________________________________________ Typical Operating Characteristics ...

Page 5

... Detailed Description A microprocessor’s (µP’s) reset input starts the µ known state. These µP supervisory circuits assert reset to prevent code execution errors during power-up, power-down, or brownout conditions. RESET is guaranteed logic low for V 1V. Once V exceeds the reset threshold, an internal CC timer keeps RESET low for the reset timeout period ...

Page 6

... Supervisory Circuits in 4-Bump (2 Chip-Scale Package RESET MR Figure 1. Reset Timing Diagram MAX6402/ MAX6405 MR RESET GND Figure 2. Interfacing to µPs with Bidirectional Reset Pins 6 _______________________________________________________________________________________ V TH ated. The graph shows the maximum pulse width that a negative going V issuing a reset signal. As the amplitude of the transient increases, the maximum allowable pulse width decreases ...

Page 7

... Supervisory Circuits in 4-Bump (2 Table 1. Factory Trimmed Reset Thresholds* PARTS SUFFIX 22* 23 MAX6400BS 26* MAX6401BS 27 MAX6402BS 28 29 MAX6403BS 39 MAX6404BS 40 MAX6405BS 44* 45 46* Factory-trimmed voltage thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance. *Note: Parts marked with an asterisk (*) are standard versions. ...

Page 8

... MAX6402BS27-T ACB MAX6402BS26-T ACA MAX6402BS25-T ABZ MAX6402BS24-T ABY MAX6402BS23-T ABX MAX6402BS22-T ABW PARTS TOP MARK MAX6405BS46-T ADV MAX6405BS45-T ADU MAX6405BS44-T ADT MAX6405BS43-T ADS MAX6405BS42-T ADR MAX6405BS41-T ADQ MAX6405BS40-T ADP MAX6405BS39-T ADO MAX6405BS38-T ADN MAX6405BS37-T ADM MAX6405BS36-T ADL MAX6405BS35-T ADK MAX6405BS34-T ADJ ...

Page 9

... 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 ______________________9 © 2001 Maxim Integrated Products ...

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