Owner manual

MAX5080/MAX5081
1A, 40V, MAXPower Step-Down
DC-DC Converters
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
ON/OFF
= 12V, V
REG
= V
DVREG
, V
SYNC
= PGND = SGND, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values
are at T
A
= + 25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
THERMAL SHUTDOWN
Thermal Shutdown Temperature Temperature rising +160 °C
Thermal Shutdown Hysteresis 20 °C
Note 1: 100% production tested at T
A
= +25°C and T
A
= T
J
= +125°C. Limits at -40°C are guaranteed by design.
Typical Operating Characteristics
(V
IN
= 12V, see Figure 5 (MAX5080) and Figure 6 (MAX5081), T
A
= +25°C, unless otherwise noted.)
UNDERVOLTAGE LOCKOUT HYSTERESIS
vs. TEMPERATURE (MAX5080)
MAX5080 toc01
TEMPERATURE (°C)
UNDERVOLTAGE LOCKOUT HYSTERESIS (V)
1108535 6010-15
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
-40 135
UNDERVOLTAGE LOCKOUT HYSTERESIS
vs. TEMPERATURE (MAX5081)
MAX5080 toc02
TEMPERATURE (°C)
UNDERVOLTAGE LOCKOUT HYSTERESIS (V)
1108535 6010-15
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
-40 135
ON/OFF THRESHOLD HYSTERESIS
vs. TEMPERATURE
MAX5080 toc03
TEMPERATURE (°C )
ON/OFF THRESHOLD HYSTERESIS (V)
11085603510-15
0.05
0.10
0.15
0.20
0
-40 135
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE (MAX5080)
MAX5080 toc04
INPUT VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
353020 2510 155
25
50
75
100
125
150
175
200
225
250
0
040
T
A
= +135
°
C
T
A
= +25
°
C
T
A
= +85
°
C
T
A
= -40
°
C
V
ON/OFF
= 0V
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE (MAX5081)
MAX5080 toc05
INPUT VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (µA)
353020 2510 155
25
50
75
100
125
150
175
200
225
250
275
300
0
040
T
A
= +135
°
C
T
A
= +25
°
C
T
A
= +85
°
C
T
A
= -40
°
C
V
ON/OFF
= 0V
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (MAX5080)
MAX5080 toc06
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
35305 10 15 20 25
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
040
T
A
= +135
°
C
T
A
= +25
°
C
T
A
= +85
°
C
T
A
= -40
°
C