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SLVS441C – DECEMBER 2002 – REVISED MARCH 2007
ORDERING INFORMATION
(1)
T
A
–40 to 85°C
(1)
Package
TPS61042DRB
Package Marking
BHS
The DRB package is available taped and reeled. Add R suffix (TPS61042DRBR) to order quantities of 3000 devices per reel. Add T
suffix (TPS61042DRBT) to order quantities of 250 devices per reel.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
TPS61042
Supply Voltages, v
(VIN)
Voltages, V
(SW)
, V
(LED)
Voltage, V
(OVP)
Continuous power dissipation
Operating junction temperature range
Storage temperature range, T
STG
Lead temperature (soldering, 10 sec)
(1)
(2)
(2)
–0.3 V to 7 V
–0.3 V to Vin + 0.3 V
30 V
30 V
See Dissipation Rating Table
–40°C to 150°C
–65°C to 150°C
260°C
Voltages, V
(Rs)
, V
(CTRL)
, V
(FB)
(2)
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.
All voltage values are with respect to network ground terminal.
DISSIPATION RATING
PACKAGE
8 pin QFN
(1)
(1)
T
A
≤
25°C POWER
RATING
370 mW
DERATING FACTOR
ABOVE T
A
= 25°C
3.7 mW/°C
T
A
= 70°C POWER
RATING
204 mW
T
A
= 85°C POWER
RATING
148 mW
The thermal resistance junction to ambient of the 8-pin QFN package is 270
°C/W.
Standard 2-layer PCB without vias for the thermal
pad. See the application section on how to improve the thermal resistance R
θJA
.
RECOMMENDED OPERATING CONDITIONS
MIN
V
I
V
s
V
SW
I
(LED)
L
f
C
I
C
O
T
A
T
J
(1)
Input voltage range
Output voltage range
Switch voltage
Maximum LED switch current
Inductor
(1)
Switching
frequency
(1)
4.7
100
–40
–40
85
125
Input capacitor
(1)
Output capacitor
(1)
Operating ambient temperature
Operating junction temperature
See application section for further information
4.7
1
1.8
V
IN
TYP
MAX
6
27.5
30
60
UNIT
V
V
V
mA
µH
MHz
µF
nF
°C
°C
2
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