Datasheet
MAX5079
ORing MOSFET Controller with
Ultra-Fast 200ns Turn-Off
4 _______________________________________________________________________________________
Note 1: All devices are production tested at +25°C. Limits over temperature are guaranteed by design.
Note 2: Threshold is reached when charge pump turns off.
Note 3: Gate discharge current is guaranteed through the testing of gate fall time.
Note 4: V
IN
switchover threshold is V
IN
at which the gate-drive voltage (V
GATE
- V
IN
) goes from 5V to 7V, V
IN
rising and (V
IN
≥ V
BUS
).
ELECTRICAL CHARACTERISTICS (continued)
((V
IN
= 2.75V to 13.2V and V
AUXIN
= 0V) or (V
IN
= 1V and V
AUXIN
= 2.75V to 13.2V), R
STH
= open, R
FTH
= 0, V
UVLO
= 1V, V
OVI
= 0V,
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
IN
= 12V and T
A
= +25°C. See the
Typical Operating Circuit
.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
IN
Switchover Hysteresis
(Note 4)
V
IN_SOHYS
40 mV
External 70
Charge-Pump Frequency f
CP
Internal, V
IN
< 5V, V
AUXIN
< 5V 1100
kHz
PROTECTION
OVI Input Bias Current I
OVI
500 nA
OVI Threshold V
OVI_TH
OVI rising 0.568 0.6 0.632 V
OVP Output Low Voltage V
OVP_LOW
V
OVI
= 1V, I
SINK
= 10mA 0.2 0.4 V
OVP Leakage Current I
OVP_LEAK
V
IN
= 2.75V, V
OVP
= 13.2V 1 µA
PGOOD Leakage Current I
PG_LEAK
V
PGOOD
= 13.2V 1 µA
PGOOD Output Low Voltage V
PG_LOW
I
SINK
= 2mA 0.2 0.4 V
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted. See the
Typical Operating Circuit
.)
AUXIN SUPPLY CURRENT
vs. TEMPERATURE (V
IN
= V
BUS
= 1V)
MAX5079 toc01
TEMPERATURE (°C)
I
AUXIN
(mA)
1109580655035205-10-25
1
2
3
0
-40 125
V
AUXIN
= 5V
V
AUXIN
= 10V
V
AUXIN
= 2.7V
GATE-CHARGE CURRENT vs. V
IN
MAX5079 toc02
V
IN
(V)
I
GATE
(mA)
14128 104 62
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
0
015
131179351
T
A
= +25°C
T
A
= -40°C
T
A
= +125°C
T
A
= +85°C
SLOW-COMPARATOR REVERSE VOLTAGE
THRESHOLD (V
STH
vs. R
STH
)
MAX5079 toc03
R
STH
(kΩ)
V
STH
(V)
100
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.20
0
10 1000
T
A
= -40°C, T
A
= +25°C,
T
A
= +85°C, T
A
= +125°C