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TL2843B-Q1 データシート(PDF) 6 Page - Texas Instruments

部品番号 TL2843B-Q1
部品情報  HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLER
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TL2843B-Q1 データシート(HTML) 6 Page - Texas Instruments

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TL2843B-Q1
SLVSAE2A
– JULY 2010 – REVISED FEBRUARY 2012
www.ti.com
Output Section Electrical Characteristics
VCC = 15 V
(1), R
T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP(2)
MAX
IOH = –20 mA
13
13.5
High-level output voltage
V
IOH = –200 mA
12
13.5
IOL = 20 mA
0.1
0.4
Low-level output voltage
V
IOL = 200 mA
1.5
2.2
Rise time(3)
CL = 1 nF, TJ = 25°C
50
150
ns
Fall time(3)
CL = 1 nF, TJ = 25°C
50
150
ns
UVLO saturation(3)
VCC = 5 V, IOL = 1 mA
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.
(3)
Specified by design. Not production tested.
UNDERVOLTAGE-LOCKOUT SECTION ELECTRICAL CHARACTERISTICS
VCC = 15 V
(1), R
T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP(2)
MAX
Start threshold voltage
7.8
8.4
9
V
Minimum operating voltage after start-up
7
7.6
8.2
V
(1)
Adjust VCC above the start threshold before setting it to 15 V.
(2)
All typical values are at TJ = 25°C.
PULSE-WIDTH MODULATOR SECTION ELECTRICAL CHARACTERISTICS
VCC = 15 V
(1), R
T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP(2)
MAX
Maximum duty cycle(3)
94
96
100
%
Minimum duty cycle
0
%
(1)
Adjust VCC above the start threshold before setting it to 15 V.
(2)
All typical values are at TJ = 25°C.
(3)
Specified by design. Not production tested.
SUPPLY VOLTAGE ELECTRICAL CHARACTERISTICS
VCC = 15 V
(1), R
T = 10 kΩ, CT = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP(2)
MAX
Start-up current
0.3
0.5
mA
Operating supply current
VFB and ISENSE at 0 V
11
17
mA
Limiting voltage
ICC = 25 mA
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.
6
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© 2010–2012, Texas Instruments Incorporated
Product Folder Link(s): TL2843B-Q1


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