MAX6444US26L+T Maxim Integrated Products, MAX6444US26L+T Datasheet - Page 4

• Manufacturer Part Number: MAX6444US26L+T
• Description: IC MPU RESET 2.625V SOT143-4
• Manufacturer: Maxim Integrated Products
• Type: Simple Reset/Power-On Resetr

Specifications of MAX6444US26L+T

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 2.625V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-143, SOT-143B, TO-253AA
• Monitored Voltage: 1 V to 5.5 V
• Undervoltage Threshold: 2.55 V
• Overvoltage Threshold: 2.7 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
• Supply Voltage (min): 1 V
• Supply Current (typ): 7 uA
• Maximum Power Dissipation: 320 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX6444US26L+T; MAX6444US26L+TTR

µP Reset Circuits with Long Manual Reset
Setup Period
(V
4
CC
1.03
1.02
1.01
1.00
0.99
0.98
0.97
_______________________________________________________________________________________
= 3.3V, T
9
8
7
6
5
4
3
2
1
0
-40
1.0
NORMALIZED V
T
1.5
A
= +25°C
-15
A
2.0 2.5 3.0
vs. SUPPLY VOLTAGE
vs. TEMPERATURE
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
10
CC
T
T
A
RESET THRESHOLD
A
= +85°C
(MAX6445L/MAX6446L/MAX6449L/MAX6450L)
= -40°C
3.5 4.0
35
MANUAL RESET TO RESET DELAY
4.5
60
5.0
5.5
85
TIME (1s/div)
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
24.0
23.6
23.2
22.8
22.4
22.0
21.6
21.2
20.8
20.4
20.0
V
CC
-40
-40
NORMALIZED RESET TIMEOUT PERIOD
= 5V
MAX6443/52 toc07
V
CC
-15
-15
= FALLING AT 1mV/µs
V
vs. TEMPERATURE
CC
vs. TEMPERATURE
MR1
(5V/div)
MR2
(5V/div)
RESET
(5V/div)
TEMPERATURE (°C)
TEMPERATURE (°C)
TO RESET DELAY
10
10
Typical Operating Characteristics
35
35
60
60
V
CC
= 4.5V
V
85
85
CC
TIME (100µs/div)
TO RESET DELAY
24.0
23.6
23.2
22.8
22.4
22.0
21.6
21.2
20.8
20.4
20.0
250
200
150
100
50
0
-40
V
0
TH
vs. TEMPERATURE (RSTIN FALLING)
vs. RESET THRESHOLD OVERDRIVE
= 4.392V
MAXIMUM TRANSIENT DURATION
RSTIN FALLING AT 1mV/µs
RESET OCCURS
ABOVE THE CURVE
V
RESET THRESHOLD OVERDRIVE (mV)
MAX6443/52 toc08
CC
200
-15
RSTIN TO RESET DELAY
= 4.3V
TEMPERATURE (°C)
400
10
V
RESET
(2V/div)
CC
(100mV/div)
600
35
V
TH
= 4.4V
800
60
1000
85