LTC3705_15 Datasheet, PDF (5/20 Pages) Linear Technology – 2-Switch Forward Controller and Gate Driver

LTC3705
TYPICAL PERFOR A CE CHARACTERISTICS (T_A = 25°C unless otherwise specified)
Optoisolator Bias V_FB/IN+ vs
I_FB/IN+
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
0.5
1.0
1.5
2.0
–I_FB/IN+ (mA)
3705 G05
Linear Regulator Start-Up
Gate Drive Pull-Down Resistance
vs Temperature
2.50
2.25
2.00
1.75
1.50
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3705 G14
Gate Drive Encoding
Gate Drive Peak Pull-Up Current
vs Temperature
2.0
1.9
1.8
1.7
1.6
1.5
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3705 G15
Fault Operation
V_IN
TG
10V/DIV
BG
5V/DIV
NDRV
25µs/DIV
V_CC
3705 G06
10V/DIV
FB/IN
FS/IN–
1µs/DIV
SSFLT
3705 G07
2V/DIV
40ms/DIV
3705 G08
3705fb
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