Datasheet

LP3988
www.ti.com SNVS161D –OCTOBER 2001–REVISED MAY 2013
ABSOLUTE MAXIMUM RATINGS
(1)(2)(3)
V
IN
−0.3 to 6.5V
V
OUT
, V
EN
, PowerGood (applies only to DSBGA) −0.3V to (V
IN
+0.3V),
with 6V max
Junction Temperature 150°C
Storage Temperature −65°C to +150°C
Lead Temp, Pad Temp. 235°C
Power Dissipation
(4)
SOT-23-5 364 mW
DSBGA 314 mW
ESD Rating
(5)
Human Body Model 2 kV
Machine Model
SOT-23-5 150V
DSBGA 200V
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is specified. Recommended Operating Conditions 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 Texas Instruments Sales Office/ Distributors for availability and
specifications.
(4) The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using the formula: P
D
= (T
J
-
T
A
)/θ
JA
where T
J
is the junction temperature, T
A
is the ambient temperature, and θ
JA
is the junction-to-ambient thermal resistance. The
364mW rating appearing under Absolute Maximum Ratings for the SOT-23-5 package results from substituting the Absolute Maximum
junction temperature, 150°C, for T
J
, 70°C for T
A
, and 220°C/W for θ
JA
. More power can be dissipated safely at ambient temperatures
below 70°C . Less power can be dissipated safely at ambient temperatures above 70°C. The Absolute Maximum power dissipation can
be increased by 4.5mW for each degree below 70°C, and it must be derated by 4.5mW for each degree above 70°C. Same principle
applies to the DSBGA package.
(5) The human body model is 100 pF discharged through 1.5 kΩ resistor into each pin. The machine model is a 200 pF capacitor
discharged directly into each pin.
RECOMMENDED OPERATING CONDITIONS
(1) (2)
V
IN
(3)
2.5V to 6V
V
OUT
, V
EN
0 to V
IN
Junction Temperature −40°C to +125°C
Junction-to-Ambient Thermal Resistance (θ
JA
)
SOT-23-5 220ºC/W
DSBGA 255ºC/W
Maximum Power Dissipation
(4)
SOT-23-5 250 mW
DSBGA 216 mW
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is specified. Recommended Operating Conditions 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) The minimum V
IN
is dependant on the device output option.For Vout
(NOM)
< 2.5V, V
IN(MIN)
will equal 2.5V. For Vout
(NOM)
>= 2.5V,
V
IN(MIN)
will equal Vout
(NOM)
+ 200 mV.
(4) Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The
250 mW rating appearing under Recommended Operating Conditions for the SOT-23-5 package results from substituting the maximum
junction temperature for operation, 125°C, for T
J
, 70°C for T
A
, and 220°C/W for θ
JA
into
()
above. More power can be dissipated at
ambient temperatures below 70°C . Less power can be dissipated at ambient temperatures above 70°C. The maximum power
dissipation for operation can be increased by 4.5mW for each degree below 70°C, and it must be derated by 4.5mW for each degree
above 70°C. Same principle applies to the DSBGA package.
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