Datasheet

MAX5955/MAX5956
Low-Voltage, Dual Hot-Swap Controllers with
Independent On/Off Control
4 _______________________________________________________________________________________
0
0.6
0.4
0.2
1.0
0.8
1.8
1.6
1.4
1.2
2.0
02468101214
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5955/56 toc01
V
INX
(V)
I
IN
(mA)
V
INY
= V
ON1
= V
ON2
= 2.7V
I
INX
+ I
INY
I
INX
I
INY
0
0.6
0.4
0.2
1.0
0.8
1.8
1.6
1.4
1.2
2.0
02468101214
TOTAL SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5955/56 toc02
V
INX
(V)
I
IN
(mA)
V
INY
= 5.0V
A) V
ON1
= V
ON2
= 3.3V
B) V
ON1
= V
ON2
= 1.5V
C) V
ON1
= V
ON2
= 0
A
C
B
0
0.6
0.4
0.2
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-40 10-15 35 60 85
SUPPLY CURRENT
vs. TEMPERATURE
MAX5955/56 toc03
TEMPERATURE (
°
C)
I
IN
(mA)
V
ON1
= V
IN1
V
ON2
= V
IN2
I
IN1
+ I
IN2
I
IN2
I
IN1
0
2
1
4
3
5
6
0682 4 10 12 14
GATE-DRIVE VOLTAGE
vs. INPUT VOLTAGE
MAX5955/56 toc04
V
INX
(V)
GATE-DRIVE VOLTAGE (V)
V
INY
= 2.7V
0
60
40
20
80
100
120
140
160
180
200
020
GATE CHARGE CURRENT
vs. GATE VOLTAGE
MAX5955/56 toc05
V
GATEX
(V)
GATE CHARGE CURRENT (µA)
51015
V
INY
= 2.7V
V
INX
= 13.2V
V
INX
= 5V
V
INX
= 1V
0
60
40
20
80
100
120
140
160
180
200
-40 10-15 35 60 85
GATE CHARGE CURRENT
vs. TEMPERATURE
MAX5955/56 toc06
TEMPERATURE (
°
C)
GATE CHARGE CURRENT (µA)
V
INX
= 13.2V
V
INX
= 5V
V
INX
= 1V
V
INY
= 2.7V
V
GATEX
= 0
0
2
1
4
3
5
6
01051520
GATE STRONG DISCHARGE CURRENT
vs. GATE VOLTAGE
MAX5955/56 toc07
V
GATEX
(V)
GATE DISCHARGE CURRENT (mA)
V
INX
= 13.2V
V
INX
= 5V
V
INX
= 1V
V
ON1
= V
ON2
= 0
V
INY
= 2.7V
V
GATEX
= V
INX
+ 6.2V
0
2
1
4
3
5
6
-40 10-15 35 60 85
GATE STRONG DISCHARGE CURRENT
vs. TEMPERATURE
MAX5955/56 toc08
TEMPERATURE (°C)
GATE DISCHARGE CURRENT (mA)
V
INX
= 13.2V
V
INX
= 5V
V
INX
= 1V
V
ON1
= V
ON2
= 0
V
INY
= 2.7V
V
GATEX
= V
INX
+ 6.2V
0.0001
0.001
0.1
0.01
1
10
0507525 100 125 150 175 200
TURN-OFF TIME vs. SENSE VOLTAGE
MAX5955/56 toc09
V
IN
- V
SENSE
(mV)
TURN-OFF TIME (ms)
SLOW-COMP. THRESHOLD
FAST-COMP. THRESHOLD
Typical Operating Characteristics
(Typical Operating Circuits, Q1 = Q2 = Fairchild FDB7090L, V
IN1
= +5V, V
IN2
= +3.3V, V
ON1
= V
ON2
= +2.7V, T
A
= +25°C, unless
otherwise noted. Channels 1 and 2 are identical in performance. Where characteristics are interchangeable, channels 1 and 2 are
referred to as X and Y.)