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Output Section Electrical Characteristics
Undervoltage-Lockout Section Electrical Characteristics
Pulse-Width Modulator Section Electrical Characteristics
Supply Voltage 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
I
OH
= –20 mA 13 13.5 13 13.5
High-level output voltage V
I
OH
= –200 mA 12 13.5 12 13.5
I
OL
= 20 mA 0.1 0.4 0.1 0.4
Low-level output voltage V
I
OL
= 200 mA 1.5 2.2 1.5 2.2
Rise time C
L
= 1 nF, T
J
= 25 ° C 50 150 50 150 ns
Fall time C
L
= 1 nF, T
J
= 25 ° C 50 150 50 150 ns
UVLO saturation V
CC
= 5 V, I
OL
= 1 mA 0.7 1.2 0.7 1.2 V
(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
(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
TLx842B, TLx844B 15 16 17 14.5 16 17.5
Start threshold voltage V
TLx843B, TLx845B 7.8 8.4 9 7.8 8.4 9
TLx842B, TLx844B 9 10 11 8.5 10 11.5
Minimum operating voltage
V
after start-up
TLx843B, TLx845B 7 7.6 8.2 7 7.6 8.2
(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
(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
TL3842B, TL3843B 94 96 100 94 96 100
Maximum duty cycle %
TL3844B, TL3845B 47 48 50 47 48 50
Minimum duty cycle 0 0 %
(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
(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
Start-up current 0.3 0.5 0.3 0.5 mA
Operating supply current VFB and I
SENSE
at 0 V 11 17 11 17 mA
Limiting voltage I
CC
= 25 mA 30 34 30 34 V
(1) Adjust V
CC
above the start threshold before setting it to 15 V.
(2) All typical values are at T
J
= 25 ° C.
7
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