TL284x, TL384x
CURRENT-MODE PWM CONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
electricalcharacteristics,V =15V(seeNote4),R =10kΩ,C =3.3nF,T =25°C(unlessotherwise
CC
T
T
A
specified) (continued)
pulse-width-modulator section
TL384xY
TYP
PARAMETER
UNIT
MIN
MAX
TL3842Y, TL3843Y
TL3844Y, TL3845Y
97%
Maximum duty cycle
48%
NOTE 4: Adjust V
above the start threshold before setting it to 15 V.
CC
supply voltage
TL384xY
TYP
0.5
PARAMETER
TEST CONDITIONS
UNIT
MIN
MAX
1
Start-up current
mA
mA
V
Operating supply current
Limiting voltage
VFB and ISENSE at 0 V
= 25 mA
11
17
I
34
CC
above the start threshold before setting it to 15 V.
NOTE 4: Adjust V
CC
8
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