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TL3842BD Datasheet(PDF) 7 Page - Texas Instruments

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Part No. TL3842BD
Description  HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

TL3842BD Datasheet(HTML) 7 Page - Texas Instruments

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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
VCC = 15 V
(1), R
T = 10 kΩ, CT = 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
IOH = –20 mA
13
13.5
13
13.5
High-level output voltage
V
IOH = –200 mA
12
13.5
12
13.5
IOL = 20 mA
0.1
0.4
0.1
0.4
Low-level output voltage
V
IOL = 200 mA
1.5
2.2
1.5
2.2
Rise time
CL = 1 nF, TJ = 25°C
50
150
50
150
ns
Fall time
CL = 1 nF, TJ = 25°C
50
150
50
150
ns
UVLO saturation
VCC = 5 V, IOL = 1 mA
0.7
1.2
0.7
1.2
V
(1)
Adjust VCC above the start threshold before setting it to 15 V.
(2)
All typical values are at TJ = 25°C.
VCC = 15 V
(1), R
T = 10 kΩ, CT = 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 VCC above the start threshold before setting it to 15 V.
(2)
All typical values are at TJ = 25°C.
VCC = 15 V
(1), R
T = 10 kΩ, CT = 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 VCC above the start threshold before setting it to 15 V.
(2)
All typical values are at TJ = 25°C.
VCC = 15 V
(1), R
T = 10 kΩ, CT = 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 ISENSE at 0 V
11
17
11
17
mA
Limiting voltage
ICC = 25 mA
30
34
30
34
V
(1)
Adjust VCC above the start threshold before setting it to 15 V.
(2)
All typical values are at TJ = 25°C.
7
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