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TL4242TDRJRQ1 Datenblatt(PDF) 4 Page - Texas Instruments

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Teilenummer TL4242TDRJRQ1
Bauteilbeschribung  ADJUSTABLE LED DRIVER
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
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TL4242TDRJRQ1 Datenblatt(HTML) 4 Page - Texas Instruments

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TL4242-Q1
SLVS732E – JULY 2010 – REVISED JULY 2013
www.ti.com
OVERALL DEVICE ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, VI = 13.5 V, RREF = 0.47 Ω, VPWM,H, TA = –40°C to 105°C (QFN),
TA = –40°C to 125°C (SFM), all voltages with respect to ground (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IqL
Supply current
VQ = 6.6 V
12
22
mA
IqOFF
Supply current, off mode
PWM = L, TJ < 85°C
0.1
2
μA
OUTPUT ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, VI = 13.5 V, RREF = 0.47 Ω, VPWM,H, TA = –40°C to 105°C (QFN),
TA = –40°C to 125°C (SFM), all voltages with respect to ground (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VQ – VREF
(1) = 6.6 V
357
376
395
VQ – VREF = 6.6 V, RREF = 1 Ω
168
177
185
IQ
Output current
mA
VQ – VREF = 6.6 V, RREF = 0.39 Ω
431
454
476
VQ – VREF = 5.4 V to 7.8 V, VI = 9 V to 16 V
357
376
395
IQmax
Output current limit
RREF = 0 Ω
600
mA
Vdr
Drop voltage
IQ = 300 mA
0.35
0.7
V
(1)
VQ – VREF equals the forward voltage sum of the connected LEDs (see ).
PWM INPUT ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, VI = 13.5 V, RREF = 0.47 Ω, VPWM,H, TA = –40°C to 105°C (QFN),
TA = -40°C to 125°C (SFM), all voltages with respect to ground (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VPWM,H
High-level PWM voltage
2.6
V
VPWM,L
Low-level PWM voltage
0.7
V
IPWM,H
High-level PWM input current
VPWM = 5 V
220
500
μA
IPWM,L
Low-level PWM input current
VPWM = 0 V
–1
1
μA
tPWM,ON
Delay time, turnon
70% of IQnom, see Figure 8
0
15
40
μs
tPWM,OFF
Delay time, turnoff
30% of IQnom, see Figure 8
0
15
40
μs
REFERENCE (REF) ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, VI = 13.5 V, RREF = 0.47 Ω, VPWM,H, TA = –40°C to 105°C (QFN),
TA = –40°C to 125°C (SFM), all voltages with respect to ground (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VREF
Reference voltage
RREF = 0.39 Ω to 1 Ω
168
177
185
mV
IREF
Reference input current
VREF = 180 mV
–1
0.1
1
μA
4
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