Datasheet

3Maxim Integrated
1V to 16V, Single-Channel, Hot-Swap Controllers
with Precision Current-Sensing Output
MAX5977A/MAX5977B
ELECTRICAL CHARACTERISTICS (continued)
(V
PWR
= V
IN
= 12V, R
SENSE
= 4mI, R
FCOMP
= R
SCOMP
= 2kI, R
GATE
= 1kI, C
GATE
= 330nF, C
REG
= 1FF, unless otherwise noted.
Typical Values at V
PWR
= V
IN
= 3.3V, T
A
= +25NC, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CURRENT-SENSE AMPLIFIER
Input Common-Mode Range V
IN
- V
SENSE
1.5 V
Input Offset Error 0.1 mV
Transconductance Gain g
M
10mV P (V
IN
- V
SENSE
) P 50mV,
-40NC P T
A
P +85NC
2457 2500 2537
FS
10mV P (V
IN
- V
SENSE
) P 50mV,
0NC P T
A
P +25NC
2467 2500 2532
Combined Gain and Offset
Accuracy
Set V
IN
- V
SENSE
= 50mV, measure I
CSOUT
,
V
CSOUT
= 25mV (-40NC P T
A
P +85NC)
122.1 125 128
FA
Set V
IN
- V
SENSE
= 50mV, measure I
CSOUT
,
V
CSOUT
= 25mV (0N P T
A
P +25NC)
123.5 125 126.5
Set V
IN
- V
SENSE
= 10mV, measure I
CSOUT
,
V
CSOUT
= 25mV (-40NC P T
A
P +85NC)
22.5 25 27.6
Set V
IN
- V
SENSE
= 10mV, measure I
CSOUT
,
V
CSOUT
= 25mV (0N P T
A
P +25NC)
24.0 25 26.0
Total Full-Scale Error
2mV < (V
IN
- V
SENSE
) < 10mV
(-40NC P T
A
P +85NC),
% error = (I
CSOUT
- (V
IN
- V
SENSE
) x
0.0025)/(10mV x 0.0025)
-10 +10
% of
10mV
Full-Scale
Output
2mV < (V
IN
- V
SENSE
) < 10mV
(0NC P T
A
P +25NC),
% error = (I
CSOUT
- (V
IN
- V
SENSE
) x
0.0025)/(10mV x 0.0025)
-4.21 +4.21
2mV < (V
IN
- V
SENSE
) < 25mV
(-40NC P T
A
P +85NC),
% error = (I
CSOUT
- (V
IN
- V
SENSE
) x
0.0025)/(25mV x 0.0025)
-4.1 +4.1
% of
25mV
Full-Scale
Output
2mV < (V
IN
- V
SENSE
) < 25mV
(0NC P T
A
P +25NC),
% error = (I
CSOUT
- (V
IN
- V
SENSE
) x
0.0025)/(25mV x 0.0025)
-1.68 +1.68
2mV < (V
IN
- V
SENSE
) < 50mV
(-40NC P T
A
P +85NC),
% error = (I
CSOUT
- (V
IN
- V
SENSE
) x
0.0025)/(50mV x 0.0025)
-2.34 +2.3
% of
50mV
Full-Scale
Output
2mV < (V
IN
- V
SENSE
) < 50mV
(0NC P T
A
P +25NC),
% error = (I
CSOUT
- (V
IN
- V
SENSE
) x
0.0025)/(50mV x 0.0025)
-1.18 +0.9
Output Common-Mode Range CSOUT voltage range 0 2.5 V
POWER-GOOD
PG Delay t
dPG
50 ms
PG Threshold Rising V
THRPG
V
IN
- V
SOURCE
falling 100 mV
PG Threshold Hysteresis 100 mV