LTC4271IUF#PBF Linear Technology, LTC4271IUF#PBF Datasheet - Page 9

• Manufacturer Part Number: LTC4271IUF#PBF
• Manufacturer: Linear Technology

Specifications of LTC4271IUF#PBF

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 24
• Mounting: Surface Mount
• Package Type: QFN EP
• Case Length: 4mm
• Screening Level: Industrial
• Lead Free Status / Rohs Status: Compliant

TYPICAL PERFORMANCE CHARACTERISTICS
2.50
2.25
2.00
1.75
1.50
1.25
3.0
2.5
2.0
1.5
1.0
0.5
0.0
220
216
212
208
204
–40
–40
0
802.3at I
vs Temperature
DC Disconnect Threshold
vs Temperature
INT and SDAOUT Pull Down
Voltage vs Load Current
PORT 1
REG 48h = C0h
R
PORT 1
REG 47h = E2h
R
SENSE
SENSE
–20
–20
10
= 0.25Ω
= 0.25Ω
0
0
LIM
LOAD CURRENT (mA)
TEMPERATURE (°C)
TEMPERATURE (°C)
20
20
20
Threshold
40
40
30
60
60
40
80
80
50
100 120
100 120
42701 G09
42701 G11
42701 G13
60
10
9
8
7
6
5
880
864
848
832
816
500mA/DIV
CURRENT
VOLTAGE
VOLTAGE
20V/DIV
10V/DIV
PORT
PORT
GATE
GND
0mA
166
164
162
160
158
156
154
152
900
800
700
600
500
400
300
200
100
V
V
EE
EE
0
–40
–54
802.3at I
vs Temperature
802.3at Current Limit Foldback
MOSFET Gate Drive With Fast
Pull Down
PORT 1
REG 47h = E2h
R
APPLIED
SENSE
FAULT
–20
50Ω
–45
= 0.25Ω
0
CUT
TEMPERATURE (°C)
–36
FAST PULL DOWN
20
Threshold
100μs/DIV
V
LTC4270/LTC4271
OUTn
–27
40
50Ω FAULT REMOVED
(V)
60
CURRENT LIMIT
R
–18
REG 48h = C0h
SENSE
80
V
V
DD
EE
= 0.25Ω
–9
PORT 1
100 120
= –54V
= 3.3V
42701 G10
42701 G12
42701 G14
0
664
656
648
640
632
624
616
608
225
200
175
150
125
100
75
50
25
0
42701f
9