Техническая Спецификация для Texas Instruments LM3549 Evaluation Board LM3549SQEV/NOPB LM3549SQEV/NOPB
Модели
LM3549SQEV/NOPB
SNVS640A – AUGUST 2010 – REVISED MAY 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1) (2) (3)
VDD and VOUT pins
−
0.3V to 6.0V
Voltage on all other pins
−
0.3V (V
IN
+0.3V)
w/6.0V max
Continuous Power Dissipation
(4)
Internally Limited
Junction Temperature (T
J-MAX
)
+150°C
Storage Temperature Range
-65°C to +150°C
Maximum Lead Temperature (Soldering)
(5)
ESD Rating
(6)
Human Body Model
2.0kV
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
(2)
All voltages are with respect to the potential at the GND pin.
(3)
If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.
(4)
Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
J
=+150°C (typ.) and
disengages at T
J
=+140°C (typ.).
(5)
For detailed soldering specifications and information, please refer to Application Note AN-1187: Leadless Leadframe Package
(LLP).(
(LLP).(
(6)
The Human body model is a 100 pF capacitor discharged through a 1.5 k
Ω
resistor into each pin. (MIL-STD-883 3015.7)
Operating Ratings
(1) (2)
Input Voltage Range
2.7V to 5.5V
Junction Temperature (T
J
) Range
−
30°C to +125°C
Ambient Temperature (T
A
) Range
(3)
−
30°C to +85°C
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
(2)
All voltages are with respect to the potential at the GND pin.
(3)
In applications where high-power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (T
have to be derated. Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
J-MAX-OP
=
+125°C), the maximum power dissipation of the device in the application (P
D-MAX
), and the junction-to ambient thermal resistance of the
part/package in the application (
θ
JA
), as given by the following equation: T
A-MAX
= T
J-MAX-OP
– (
θ
JA
× P
D-MAX
).
Thermal Properties
Junction-to-Ambient Thermal Resistance (
θ
JA
), WQFN-24 Package
(1)
35 - 50°C/W
(1)
Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power
dissipation exists, special care must be paid to thermal dissipation issues in board design.
dissipation exists, special care must be paid to thermal dissipation issues in board design.
Electrical Characteristics
(1) (2)
Limits in standard type face are for T
A
= 25°C. Limits in boldface type apply over the full operating ambient temperature
range (
−
30°C
≤
T
A
≤
+85°C). Unless otherwise noted, specifications apply to
with: V
IN
= 3.6V, C
IN
= 10 µF, C
OUT
=
4.7µF and L1 = 2.2 µH.
(3)
Parameter
Test Conditions
Min
Typ
Max
Units
V
IN
Supply voltage
Minimum voltage for startup
2.7
V
Full output power
3.1
5.5
I
IN
Shutdown supply current
EN low
1
µA
(IVDDP + IVDDS)
Standby supply current
EN High, x_EN low
0.4
1
mA
I
IN
Active mode supply current
EN High, x_EN high, RGB outputs
1.6
3
mA
(IVDDS)
open
(1)
All voltages are with respect to the potential at the GND pin.
(2)
Min and Max limits are specified by design, test, or statistical analysis. Typical (Typ) numbers represent the most likely norm.
(3)
C
IN
, C
OUT
: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics.
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