LTC4357 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC4357' PDF : 12 Pages View PDF
LTC4357
TYPICAL PERFORMANCE CHARACTERISTICS
VDD Current (IDD vs VDD)
800
VDD = VIN = VOUT
600
IN Current (IIN vs VIN)
400
VDD = VIN = VOUT
300
OUT Current (IOUT vs VOUT)
120
VDD = VIN = VOUT
90
400
200
60
200
100
30
0
0
20
40
60
80
VDD (V)
4357 G01
GATE Current vs Forward Drop
(IGATE(UP) vs ΔVSD)
25
$VGATE = 2.5V
0
–25
0
0
20
40
60
80
VIN (V)
4357 G02
GATE Voltage vs GATE Current
(ΔVGATE vs IGATE)
15
VIN > 18V
10
VIN = 12V
VIN = 9V
5
0
0
20
40
60
80
VOUT (V)
4357 G03
FET Turn-Off Time vs GATE
Capacitance
500
VGATE < VIN + 1V
ΔVSD = 50mV –1V
400
300
200
100
–50
–50
0
0
50
100
150
0
VSD (mV)
4357 G04
FET Turn-Off Time vs Initial
Overdrive
400
VIN = 48V
ΔVSD = VINITIAL –1V
300
5
10
15
20
25
IGATE (μA)
4357 G06
0
0 10 20 30 40 50 60 70 80
CGATE (nF)
4357 G07
FET Turn-Off Time vs Final
Overdrive
2000
VIN = 48V
ΔVSD = 55mV VFINAL
1500
200
1000
100
500
4
0
0
0.2 0.4 0.6 0.8 1.0
VINITIAL (V)
4357 G08
0
–1 –0.8 –0.6 –0.4 –0.2
0
VFINAL (V)
4357 G09
4357fb
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