Typical operating characteristics – Rainbow Electronics MAX4981 User Manual
Page 5
MAX4978–MAX4981
Overvoltage Protector with
Active Current Limit
_______________________________________________________________________________________
5
Typical Operating Characteristics
(V
IN
= 5.0V,
EN = GND, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4978-81 toc01
V
IN
(V)
I
IN
(μ
A)
22
27
17
12
7
60
80
20
40
100
120
140
160
0
2
MAX4980/MAX4981
MAX4978
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX4978-81 toc02
TEMPERATURE (
°C)
NORMALIZED ON-RESISTANCE
10
60
-15
35
85
1.0
0.8
0.9
1.1
1.2
1.3
0.7
-40
NORMALIZED UVLO THRESHOLD
vs. TEMPERATURE
MAX4978-81 toc03
TEMPERATURE (
°C)
NORMALIZED UVLO THRESHOLD
10
60
-15
35
85
1.000
0.995
1.005
1.010
0.990
-40
NORMALIZED OVLO THRESHOLD
vs. TEMPERATURE
MAX4978-81 toc04
TEMPERATURE (
°C)
NORMALIZED OVLO THRESHOLD
10
60
-15
35
85
1.000
0.995
1.005
1.010
0.990
-40
BATTERY OVERVOLTAGE THRESHOLD
vs. TEMPERATURE
MMAX4978-81 toc05
TEMPERATURE (
°C)
BATTERY OVERVOLTAGE THRESHOLD
10
60
-15
35
85
4.40
4.35
4.45
4.50
4.30
-40
NORMALIZED CURRENT LIMIT
vs. TEMPERATURE
MMAX4978-81 toc06
TEMPERATURE (
°C)
NORMALIZED CURRENT LIMIT
10
60
-15
35
85
1.00
0.95
1.05
1.10
0.90
-40
NORMALIZED STARTUP DELAY/AUTORETRY/
BLANKING TIME vs. TEMPERATURE
MAX4978-81 toc07
TEMPERATURE (
°C)
NORMALIZED STARTUP DELAY/AUTORETRY/BLANKING TIME
10
60
-15
35
85
1.000
0.996
0.998
1.004
0.994
1.002
1.006
1.008
0.992
-40
POWER-UP RESPONSE
MAX4978-81 toc08
5V/div
5V/div
5V/div
40ms/div
V
IN
V
OUT
V
SDT
OVERVOLTAGE FAULT RESPONSE
MAX4978-81 toc09
4
μs/div
R
L
= 1k
Ω
2V/div
2V/div
V
IN
V
OUT