Datasheet

MAX5976A/MAX5976B
2.7V to 18V, 7A, Hot-Swap Solution
3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 12V, V
ON1
= 2V, V
ON2
= V
PRESDET
= 0V, R
CB
= 40kI, T
A
= T
J
= -40NC to +85NC, unless otherwise noted. Typical values are
at T
A
= +25NC.) (Note 3)
Note 3: All devices are 100% production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 4: The current-limit slow-comparator response time is weighed against the amount of overcurrent so that the higher the over-
current condition, the faster the response time.
Typical Operating Characteristics
(V
IN
= 12V, V
ON1
= 2V, R
CB
= 40kω, V
ON2
= V
PRESDET
= 0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX5976 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
603510-15
4.5
5.0
5.5
6.0
4.0
-40 85
V
ON1
= 2V
V
IN
= 12V
V
IN
= 3V
V
IN
= 5V
CIRCUIT-BREAKER THRESHOLD
vs. CIRCUIT-BREAKER RESISTANCE
MAX5976 toc02
R
CB
(kI)
CIRCUIT-BREAKER THRESHOLD (A)
3530252015
2
4
6
8
10
0
10 40
V
IN
= 12V
CIRCUIT-BREAKER THRESHOLD
vs. TEMPERATURE
MAX5976 toc03
TEMPERATURE (°C)
CIRCUIT-BREAKER THRESHOLD (A)
603510-15
2
4
6
8
10
0
-40 85
V
IN
= 12V
R
CB
= 39.3kI
R
CB
= 30.1kI
R
CB
= 19.9kI
R
CB
= 10kI
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OPEN-DRAIN OUTPUTS
FAULT, PG Output Low Voltage V
OL
Low-impedance state,
I
FAULT
= I
PG
= 5mA
0.4 V
FAULT, PG Output High
Leakage Current
I
OH
High-impedance state,
V
FAULT
= V
PG
= 16V
1 FA
OUT Bias Current I
OUT
V
ON1
= GND 10 FA
TIMING
Automatic Restart Delay After
Current-Limit Timeout
t
OFF
250 ms
PG Assertion Delay t
PG
From V
OUT
> V
PG
16 ms
PG Threshold V
PG
V
OUT
= 12V
0.9 x
V
IN
V
THERMAL PROTECTION
Thermal-Shutdown Threshold 150 NC
Thermal-Shutdown Threshold
Hysteresis
20 NC