MAX6464UK45 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Ultra-Low-Power Voltage Detectors and μP Supervisory Circuits

19-2533; Rev 2; 12/05
Ultra-Low-Power Voltage Detectors and
µP Supervisory Circuits
General Description
The MAX6461–MAX6466 family of ultra-low-power voltage
detectors and µP reset supervisory circuits monitors bat-
tery, power-supply, and system voltages. Each circuit
includes a precision bandgap reference, a comparator,
internally trimmed resistor networks that set specified trip
thresholds, and an internal 5% threshold hysteresis circuit
(see the Functional Diagram). Output is asserted when
V_CC falls below the internal V_TH- and remains asserted
until V_CC rises above V_TH+ (V_TH+ = V_TH- × 1.05). These
devices provide excellent circuit reliability and low cost
by eliminating external components and adjustments
when monitoring nominal system voltages from +1.6V to
+5.5V. The MAX6461/MAX6462/MAX6463 are voltage
detectors with a propagation delay of 17µs.
The MAX6464/MAX6465/MAX6466 are µP supervisory
circuits with a minimum reset timeout period of 150ms. All
devices are available with thresholds from +1.6V to +5.5V
in 100mV increments.
The family is available with three output stage options:
push-pull with active-low output, push-pull with active-
high output, and open drain with active-low output. These
devices are available in SC70 and SOT23 packages
specified over the -40°C to +125°C temperature range.
Applications
Precision Battery Monitoring
Load Switching/Power Sequencing
Power-Supply Monitoring in Digital/Analog
Systems
Noise-Immune µP Reset Circuits
Portable/Battery-Powered Equipment
Cellular Phones/Cordless Phones
PDAs
Portable Medical Devices
Features
♦ Ultra-Low 1.0µA Supply Current
♦ Preset Thresholds from +1.6V to +5.5V in 100mV
Increments
♦ Internal 5% Threshold Hysteresis
♦ ±2.5% Threshold Accuracy Over Temperature
♦ Internal Timeout Period Option (150ms min)
♦ Immune to Short Voltage Transients
♦ No External Components
♦ Available in Three Output Options: Push-Pull
(Active Low/Active High) and Open Drain (Active
Low)
♦ Fully Specified from -40°C to +125°C
♦ Small SC70 and SOT23 Packages
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX6461XR_ _-T -40°C to +125°C 3 SC70-3
MAX6461UR_ _-T -40°C to +125°C 3 SOT23-3
MAX6461UK_ _-T -40°C to +125°C 5 SOT23-5
MAX6462XR_ _-T -40°C to +125°C 3 SC70-3
MAX6462UR_ _-T -40°C to +125°C 3 SOT23-3
MAX6462UK_ _-T -40°C to +125°C 5 SOT23-5
The MAX6461–MAX6466 are available in factory-set thresholds
from 1.6V to 5.5V in approximately 100mV increments. Choose
the desired voltage threshold suffix from Table 1 and insert it in
the blank spaces in the part number. There are 30 standard ver-
sions with a required order increment of 2500 pieces. Sample
stock generally is held on the standard versions only (Table 2).
Nonstandard versions require a 10k-piece order increment.
Contact factory for availability. All devices available in tape-and-
reel only.
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.
Selector Guide appears at end of data sheet.
Pin Configurations
TOP VIEW
GND 1
N.C. 1
5 V_CC (OUT)/OUT 1
(OUT)/OUT 2
MAX6461–
MAX6466
3 V_CC
GND 2
MAX6461–
MAX6466
GND 2
MAX6461–
MAX6466
3 V_CC
SC70-3
GND 3
4 (OUT)/OUT
SOT23-3
( ) ARE FOR THE MAX6462/MAX6465 ONLY
SOT23-5
________________________________________________________________ Maxim Integrated Products 1
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