max5956 Maxim Integrated Products, Inc., max5956 Datasheet - Page 5

• Manufacturer Part Number: max5956
• Description: Low-voltage, Dual Hot-swap Controllers With Independent On/off Control
• Manufacturer: Maxim Integrated Products, Inc.

(Typical Operating Circuits, Q1 = Q2 = Fairchild FDB7090L, V
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.)
0.1
10
0
0
0
1
20
TURN-OFF TIME vs. SENSE VOLTAGE
25
Low-Voltage, Dual Hot-Swap Controllers with
SLOW-COMPARATOR FAULT
30 35
26mV STEP
(EXPANDED SCALE)
SLOW-COMP. THRESHOLD
TURN-OFF TIME
t
40 45 50 55 60 65 70 75 80
V
SCD
IN
- V
V
1ms/div
IN
SENSE
= 5.0V
_______________________________________________________________________________________
V
IN
= 5.0V, R
(mV)
C
STARTUP WAVEFORMS
BOARD
SLOW TURN-ON
SENSE
MAX5955/56 toc13
= 1000µF, C
1ms/div
= 10mΩ, R
GATE
V
5V/div
V
100mV/div
V
5V/div
PGOOD
SENSE
GATE
TIM
= 22nF
= 47kΩ,
MAX5955/56 toc16
- V
IN
120
100
Typical Operating Characteristics (continued)
80
60
40
20
0
0
0
0
0
V
2V/div
V
2V/div
I
5A/div
V
5V/div
V
5V/div
OUT
ON
PGOOD
OUT
GATE
SLOW-COMPARATOR THRESHOLD
FAST-COMPARATOR FAULT
Independent On/Off Control
125mV STEP
100
IN1
TURN-OFF TIME
t
FCD
= +5V, V
vs. R
V
400ns/div
R
IN
LIM
200
= 5.0V
(kΩ)
LIM
IN2
300
= +3.3V, V
MAX5955/56 toc14
400
V
5V/div
V
100mV/div
V
5V/div
PGOOD
SENSE
GATE
ON1
V
IN
= 5.0V, R
- V
C
BOARD
= V
IN
60
50
40
30
20
10
AUTORETRY DELAY
0
ON2
0
= 1000µF, R
SENSE
40ms/div
= +2.7V, T
= 10mΩ, R
100
STARTUP PERIOD vs. R
R
STARTUP WAVEFORMS
TIM
V
BOARD
IN
= 27kΩ, C
= 5.0V, R
200
FAST TURN-ON
TIM
= 1.4Ω
R
1ms/div
= 47kΩ,
A
MAX5955/56 toc17
TIM
300
SENSE
= +25°C, unless
BOARD
(kΩ)
= 10mΩ,
= 1000µF
400
V
5V/div
V
5V/div
I
5A/div
OUT
GATE
OUT
MAX5955/56 toc15
TIM
500
600
V
2V/div
V
2V/div
I
5A/div
V
5V/div
V
5V/div
OUT
ON
PGOOD
OUT
GATE
5