MAX16004ATP+ Maxim Integrated Products, MAX16004ATP+ Datasheet - Page 18

• Manufacturer Part Number: MAX16004ATP+
• Description: IC UP SUPERVISOR HEX 20-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Multi-Voltage Supervisorr

Specifications of MAX16004ATP+

• Number Of Voltages Monitored: 6
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: 6 Selectable Threshold Combinations
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN Exposed Pad
• Monitored Voltage: 1.8 V, 2.5 V, 3.3 V, Adjustable
• Undervoltage Threshold: 2.97 V, 2.25 V, 1.62 V, Adjustable
• Overvoltage Threshold: 1.71 V, 2.375 V, 3.135 V, Adjustable
• Output Type: Active Low, Open Drain
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1 V
• Supply Current (typ): 50 uA
• Maximum Power Dissipation: 1355 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Voltage, Quad-/Hex-/Octal-Voltage
µP Supervisors
The MAX16000–MAX16007 are low-voltage, quad-/hex-/
octal-voltage µP supervisors in small thin QFN and TSSOP
packages. These devices provide supervisory functions
for complex multivoltage systems. The MAX16000/
MAX16001/MAX16002 monitor four voltages, the
MAX16003/MAX16004/MAX16005 monitor six voltages,
and the MAX16006/MAX16007 monitor eight voltages.
The MAX16000/MAX16001/MAX16003/MAX16004/
MAX16006 offer independent outputs for each moni-
tored voltage. The MAX16001/MAX16002/MAX16004–
MAX16007 offer a reset output that asserts whenever
any of the monitored voltages fall below their respective
thresholds or the manual reset input is asserted. The
reset output remains asserted for the reset timeout after
all voltages are above their respective thresholds and
the manual reset input is deasserted. The minimum
reset timeout is internally set to 140ms or can be
adjusted with an external capacitor.
All open-drain outputs have internal 30µA pullups that
eliminate the need for external pullup resistors.
However, each output can be driven with an external
voltage up to 5.5V. Other features offered include a
manual reset input, a tolerance pin for selecting 5% or
10% input thresholds, and a margin enable function for
deasserting the outputs during margin testing.
The MAX16001/MAX16002/MAX16004–MAX16007 offer
a watchdog timer that asserts RESET or an indepen-
dent watchdog output (MAX16005) when the watchdog
timeout period (1.6s typ) is exceeded. The watchdog
timer can be disabled by leaving input open.
The open-drain outputs of the MAX16000–MAX16007
can be configured to detect an undervoltage condition.
Figure 6 shows a configuration where an LED turns on
when the comparator output is low, indicating an
undervoltage condition. These devices can also be
used in applications such as system supervisory moni-
toring, multivoltage level detection, and V
monitoring (Figure 7).
The MAX16000–MAX16007 feature a pin-selectable
threshold tolerance. Connect TOL to GND to select 5%
threshold tolerance. Connect TOL to V
threshold tolerance.
18
______________________________________________________________________________________
Undervoltage-Detection Circuit
Applications Information
Detailed Description
Tolerance (TOL)
CC
CC
to select 10%
bar-graph
A window detector circuit uses two auxiliary inputs in
the configuration shown in Figure 8. External resistors
set the two threshold voltages of the window detector
circuit. External logic gates create the OUT signal. The
window detection width is the difference between the
threshold voltages (Figure 9).
Figure 6. Quad Undervoltage Detector with LED Indicators
Figure 7. V
V
IN
5V
V1
V2
V3
V4
(5V)
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
CC
MAX16000
MAX16001
MAX16000
MAX16001
GND
Bar-Graph Monitoring
V
CC
V
GND
5V
CC
OUT1
OUT2
OUT3
OUT4
OUT1
OUT2
OUT3
OUT4
Window Detection
D1
D2
D3
D4