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TL4242_10 Datasheet, PDF (3/14 Pages) Texas Instruments – ADJUSTABLE LED DRIVER
◁
TL4242
www.ti.com .............................................................................................................................................................. SLVS641A – APRIL 2008 – REVISED MAY 2009
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
VCC Supply voltage range(2)
VI
Input voltage range
VO
Output voltage range
IO
Output current range
θJA
Thermal impedance, junction to ambient(3)
θJP
Thermal impedance, junction to pad(3)
TJ
Virtual-junction temperature range
Tstg Storage temperature range
D
PWM
REF
Q
ST
PWM
REF
ST
JESD 51-5(4)
JESD 51-7(5)
MIN MAX UNIT
–42
45 V
–0.3
7V
–40
40 V
–1
16 V
–1
41 V
–0.3
40 V
±1 mA
±2 mA
±5 mA
49.5
°C/W
114.4
4.4 °C/W
–40 150 °C
–50 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to the network ground terminal.
(3) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
(4) The package thermal impedance is calculated in accordance with JESD 51-5.
(5) The package thermal impedance is calculated in accordance with JESD 51-7.
RECOMMENDED OPERATING CONDITIONS
VCC
VST
VPWM
CD
RREF
TJ
Supply voltage
Status (ST) output voltage
PWM voltage
Status delay (D) capacitance
Reference (REF) resistor
Virtual-junction temperature
MIN MAX UNIT
4.5
42 V
16 V
0
40 V
0 2.2 µF
0
10 Ω
–40 150 °C
OVERALL DEVICE ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, VI = 13.5 V, RREF = 0.47 Ω, VPWM,H, TJ = –40°C to 150°C, all
voltages with respect to ground (unless otherwise noted)
IqL
IqOFF
PARAMETER
Supply current
Supply current, off mode
TEST CONDITIONS
VQ = 6.6 V
PWM = L, TJ < 85°C
MIN TYP MAX UNIT
12
22 mA
0.1
2 µA
Copyright © 2008–2009, Texas Instruments Incorporated
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