LTC4280IUFD#TR Linear Technology, LTC4280IUFD#TR Datasheet - Page 3

• Manufacturer Part Number: LTC4280IUFD#TR
• Manufacturer: Linear Technology

Specifications of LTC4280IUFD#TR

• Lead Free Status / Rohs Status: Supplier Unconfirmed

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
Supplies
V
V
I
V
V
INTV
INTV
INTV
Current Limit and Circuit Breaker
Δ
Δ
I
Gate Drive
Δ
I
I
I
t
V
Comparator Inputs
V
Δ
I
V
Δ
I
V
Δ
I
V
Δ
I
V
Δ
V
Δ
I
V
DD
SENSE(IN)
GATE(UP)
GATE(DN)SLOW
GATE(DN)FAST
PHL(SENSE)
ON(IN)
EN
OV(IN)
UV(IN)
FB
DD
OV(VDD)
DD(UVL)
DD(HYST)
GS(POWERBAD)
ON(TH)
EN(TH)
OV(TH)
UV(TH)
UV(RTH)
FB
GPIO(TH)
V
V
V
V
V
V
V
V
V
SENSE(TH)
SENSE
GATE
ON(HYST)
EN(HYST)
OV(HYST)
UV(HYST)
UV(RHYST)
FB(HYST)
CC
CC(UVL)
CC(HYST)
PARAMETER
Input Supply Range
Input Supply Overvoltage Threshold
Input Supply Current
Input Supply Undervoltage Lockout
Input Supply Undervoltage Lockout Hysteresis
Internal Regulator Voltage
INTV
INTV
Circuit Breaker Threshold (V
Current Limit Voltage (V
SENSE +/– Input Current
External N-Channel Gate Drive (V
(Note 3)
External N-Channel Gate Pull-Up Current
External N-Channel Gate Pulldown Current
Pulldown Current From GATE to SOURCE
During OC/UVLO
(V
Gate-Source Voltage for Power Bad Fault
ON Pin Threshold Voltage
ON Pin Hysteresis
ON Pin Input Current
EN Input Threshold
EN Hysteresis
EN Pin Input Current
OV Pin Threshold Voltage
OV Pin Hysteresis
OV Pin Input Current
UV Pin Threshold Voltage
UV Pin Hysteresis
UV Pin Input Current
UV Pin Reset Threshold Voltage
UV Pin Reset Threshold Hysteresis
Foldback Pin Power Good Threshold
FB Pin Power Good Hysteresis
Foldback Pin Input Current
GPIO Pin Input Threshold
DD
CC
CC
– SENSE) High to GATE Low
Undervoltage Lockout
Undervoltage Lockout Hysteresis
DD
– V
DD
SENSE
– V
GATE
SENSE
)
– V
)
SOURCE
A
= 25°C. V
)
The
CONDITIONS
V
V
INTV
V
V
V
V
Gate On, V
Gate Off, V
V
V
V
V
V
V
EN = 3.5V
V
V
V
V
V
FB Rising
FB = 1.8V
V
DD
DD
FB
FB
SENSE
DD
DD
DD
SOURCE
ON
ON
EN
OV
OV
UV
UV
UV
GPIO
l
DD
= 1.3V
= 0V
= Rising
Rising
= 1.8V
Rising
= 1.8V
Falling
Rising
≥ 3.3V
= 2.9V to 15V
– SENSE = 100mV, V
– SENSE = 100mV, C
Rising
= 1.2V
CC
denotes the specifi cations which apply over the full operating
Rising
= 12V unless otherwise noted.
Rising
= 12V
= 2.9V – 15V
GATE
GATE
= 0V
= 15V
GS
GS
= 4V
= 10nF
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
1.210
1.215
1.215
1.215
1.215
2.75
2.55
22.5
22.5
0.33
MIN
–15
300
2.9
2.9
4.7
0.8
3.8
0.8
15
75
20
10
60
50
10
60
60
7
3
1.235
1.235
1.235
1.235
1.235
15.6
2.84
2.64
TYP
100
–20
450
128
128
125
3.1
5.9
0.5
4.3
0.4
55
25
26
10
20
30
80
3
1
0
0
0
0
8
0
1
LTC4280
1.255
1.255
1.255
1.255
MAX
16.5
2.89
2.79
27.5
29.5
13.5
1.26
0.47
125
–30
700
180
200
100
210
3.4
6.5
1.6
4.7
1.2
15
75
35
±1
±1
40
±1
±1
15
±1
5
1
UNITS
3
4280f
mA
mV
mV
mV
mV
mV
mA
mA
mV
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
μA
μs
V
V
V
V
V
V
V
V
V
V
V
V
V
V