LP2985IM5-3.3 National Semiconductor, LP2985IM5-3.3 Datasheet - Page 6

• Manufacturer Part Number: LP2985IM5-3.3
• Description: Voltage Regulator IC
• Manufacturer: National Semiconductor

Specifications of LP2985IM5-3.3

• No. Of Pins: 5
• Output Current: 0.15A
• Mounting Type: Surface Mount
• Voltage Regulator Type: LDO Linear
• Peak Reflow Compatible (260 C): No
• Output Voltage: 3.3V
• Current Rating: 150mA
• Output Voltage Max: 3.3V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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I
I
O
O
Limits in standard typeface are for T
less otherwise specified: V
Electrical Characteristics
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
Note 2: The ESD rating of pins 3 and 4 is 1 kV.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T
the ambient temperature, T
Where the value of
lowable dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.
Note 4: If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2985 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V
turn on this diode.
Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential.
Note 8: The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 9: The LP2985 has foldback current limiting which allows a high peak current when V
forced to ground (see Typical Performance Characteristics curves).
(SC)
(PK)
Symbol
Ripple Rejection
Short Circuit Current
Peak Output Current
J-A
for the SOT-23 package is 220˚C/W in a typical PC board mounting and the micro SMD package is 320˚C/W. Exceeding the maximum al-
Parameter
A
. The maximum allowable power dissipation at any ambient temperture is calculated using:
IN
= V
O
(NOM) + 1V, I
J
= 25˚C. and limits in boldface type apply over the full operating temperature range. Un-
f = 1 kHz, C
C
R
(Note 9)
V
OUT
OUT
L
= 0 (Steady State)
(Continued)
= 10 µF
V
L
Conditions
o
= 1 mA, C
(NOM) −5%
IN
BYPASS
to V
OUT
= 10 nF
IN
terminals that is normally reverse-biased. Reversing the polarity from V
= 1 µF, C
6
OUT
OUT
Typ
400
350
45
>
= 4.7 µF, V
0.5V, and then reduces the maximum output current as V
J
(MAX), the junction-to-ambient thermal resistance,
LP2985AI-X.X
Min
(Note 6)
ON/OFF
Max
= 2V.
Min
LP2985I-X.X
(Note 6)
Max
IN
to V
J-A
OUT
Units
OUT
mA
mA
, and
dB
will
is