Linear Technology LTC4260CGN, 200W Positive 48V Hot Swap Controller With Current and Voltage Monitoring (req DC590) DC78 DC786A Data Sheet
Product codes
DC786A
LTC4260
3
4260fc
For more information
elecTrical characTerisTics
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
General
V
V
DD
Input Supply Range
l
8.5
80
V
I
DD
Input Supply Current
l
2
5
mA
V
DD(UVL)
V
DD
Supply Undervoltage Lockout
V
DD
Falling
l
7
7.45
7.9
V
INTV
CC(UVL)
V
CC
Supply Undervoltage Lockout
INTV
CC
Falling
l
3.4
3.8
4.2
V
INTV
CC
Internal Regulator Voltage
l
5
5.5
6
V
Gate Drive
t
t
D
Turn-On Delay
l
50
100
150
ms
ΔV
GATE
External N-Channel Gate Drive
(V
GATE
– V
SOURCE
)
V
DD
= 20V to 80V
V
DD
= 8.5V to 20V
l
l
10
4.5
14
6
18
18
V
V
I
GATE(UP)
External N-Channel Pull-Up Current
Gate Drive On, V
GATE
= 0V
l
–14
–18
–22
µA
I
GATE(FST)
External N-Channel Fast Pull-Down
Fast Turn Off, V
GATE
= 48V, V
SOURCE
= 43V
l
300
600
1000
mA
I
GATE(DN)
External N-Channel Pull-Down Current
Gate Drive Off, V
GATE
= 58V, V
SOURCE
= 48V
l
0.7
1
1.4
mA
I
SOURCE
SOURCE Pin Input Current
SOURCE = 48V
l
200
400
600
µA
Input Pins
V
V
ON(TH)
ON Pin Threshold Voltage
V
ON
Rising
l
1.19
1.235
1.27
V
ΔV
ON(HYST)
ON Pin Hysteresis
l
60
130
200
mV
I
ON(IN)
ON Pin Input Current
V
ON
= 1.2V
l
0
±1
µA
V
OV(TH)
OV Pin Threshold Voltage
V
OV
Rising
l
3.43
3.5
3.56
V
ΔV
OV(HYST)
OV Pin Hysteresis
l
70
90
120
mV
I
OV(IN)
OV Pin Input Current
V
OV
= 3.5V
l
0
±1
µA
V
UV(TH)
UV Pin Threshold Voltage
V
UV
Rising
l
3.43
3.5
3.56
V
ΔV
UV(HYST)
UV Pin Hysteresis
l
310
380
440
mV
I
UV(IN)
UV Pin Input Current
V
UV
= 3.5V
l
0
±2
µA
V
UV(RTH)
UV Pin Reset Threshold Voltage
V
UV
Falling
l
1.18
1.235
1.27
V
ΔV
UV(RHYST)
UV Pin Reset Threshold Hysteresis
l
80
160
250
mV
ΔV
SENSE(TH)
Current Limit Sense Voltage Threshold
(V
DD
– V
SENSE
)
V
FB
= 3.5V
V
FB
= 0V
l
l
45
10
50
20
55
30
mV
mV
I
SENSE(IN)
SENSE Pin Input Current
V
SENSE
= 48V
l
70
100
130
µA
V
FB
Foldback Pin Power Good Threshold
FB Rising
l
3.43
3.5
3.56
V
ΔV
FB(HYST)
FB Pin Power Good Hysteresis
l
80
100
120
mV
I
FB
Foldback Pin Input Current
FB = 3.5V
l
0
±2
µA
V
BD_PRST(TH)
BD_PRST Input Threshold
V
BD_PRST
Rising
l
1.2
1.235
1.27
V
ΔV
BD_PRST(HYST)
BD_PRST Hysteresis
l
70
130
190
mV
I
BD_PRST
BD_PRST Pullup Current
BD_PRST = 0V
l
–7
–10
–16
µA
V
GPIO(TH)
GPIO Pin Input Threshold
V
GPIO
Rising
l
1.6
1.8
2
V
ΔV
GPIO(HYST)
GPIO Pin Hysteresis
80
mV
V
GPIO(OL)
GPIO Pin Output Low Voltage
I
GPIO
= 2mA
l
0.25
0.5
V
I
GPIO(IN)
GPIO Pin Input Leakage Current
V
GPIO
= 80V
l
0
±10
µA
R
ADIN
ADIN Pin Input Resistance
V
ADIN
= 1.28V
l
2
10
MΩ
I
ADIN
ADIN Pin Input Current
V
ADIN
= 2.56V
l
0
±1
µA
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 48V, unless otherwise noted.