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Reference Section Electrical Characteristics
Oscillator Section
(1)
Electrical Characteristics
TL284xB , TL384xB
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
V
CC
= 15 V
(1)
, R
T
= 10 k Ω , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xB
PARAMETER TEST CONDITIONS UNIT
MIN TYP
(2)
MAX MIN TYP
(2)
MAX
Output voltage I
O
= 1 mA, T
J
= 25 ° C 4.95 5 5.05 4.9 5 5.1 V
Line regulation V
CC
= 12 V to 25 V 6 20 6 20 mV
Load regulation I
O
= 1 mA to 20 mA 6 25 6 25 mV
Average temperature
0.2 0.4 0.2 0.4 mV/ ° C
coefficient of output voltage
Output voltage, worst-case V
CC
= 12 V to 25 V,
4.9 5.1 4.82 5.18 V
variation I
O
= 1 mA to 20 mA
Output noise voltage f = 10 Hz to 10 kHz, T
J
= 25 ° C 50 50 μ V
Output-voltage long-term drift After 1000 h at T
J
= 25 ° C 5 25 5 25 mV
Short-circuit output current –30 –100 –180 –30 –100 –180 mA
(1) Adjust V
CC
above the start threshold before setting it to 15 V.
(2) All typical values are at T
J
= 25 ° C.
V
CC
= 15 V
(2)
, R
T
= 10 k Ω , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xB
PARAMETER TEST CONDITIONS UNIT
MIN TYP
(3)
MAX MIN TYP
(3)
MAX
T
J
= 25 ° C 49 52 55 49 52 55
T
A
= T
low
to T
high
48 56 48 56
Initial accuracy kHz
T
J
= 25 ° C, R
T
= 6.2 k Ω ,
225 250 275 225 250 275
C
T
= 1 nF
Voltage stability V
CC
= 12 V to 25 V 0.2 1 0.2 1 %
Temperature stability 5 5 %
Amplitude Peak to peak 1.7 1.7 V
T
J
= 25 ° C, R
T
/C
T
= 2 V 7.8 8.3 8.8 7.8 8.3 8.8
Discharge current mA
R
T
/C
T
= 2 V 7.5 8.8 7.6 8.8
(1) Output frequency equals oscillator frequency for the TL3842B and TL3843B. Output frequency is one-half the oscillator frequency for the
TL3844B and TL3845B.
(2) Adjust V
CC
above the start threshold before setting it to 15 V.
(3) All typical values are at T
J
= 25 ° C.
5
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