LP2985AIM5X-1.8 National Semiconductor, LP2985AIM5X-1.8 Datasheet - Page 5

• Manufacturer Part Number: LP2985AIM5X-1.8
• Manufacturer: National Semiconductor

Specifications of LP2985AIM5X-1.8

• Voltage Regulator Type: Linear
• Topology: LDO
• Regulator Output Type: Fixed
• Polarity Type: Positive
• Number Of Outputs: Single
• Input Voltage (min): 2.2V
• Input Voltage (max): 16V
• Output Voltage: 1.8V
• Package Type: SOT-23
• Output Current: 150mA
• Line Regulation: 0.014%/V
• Output Voltage Accuracy: ±2.5%
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Dropout Voltage@current (typ): 0.12@50mA/0.28@150mA
• Pin Count: 5
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

I
I
O
O
(SC)
(PK)
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 for the SOT-23 package, or pins 5 and 2 for the micro SMD package, is 1 kV.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T
A
Where the value of θ
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 LP2985LV output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V
will turn on this diode, and possibly damage the device (See Application Hints).
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: The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 8: The LP2985LV has foldback current limiting which allows a high peak current when V
V
Note 9: V
at which the output voltage drops 2% below ther value measured with a 1V differential.
Note 10: Exposing the micro SMD device to direct sunlight will cause misoperation. See Application Hints for additional information.
, and the ambient temperature, T
Symbol
OUT
is forced to ground (see Typical Performance Characteristics curves).
IN
must be the greater of 2.2V or V
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. Exceeding the maximum allowable dissipation will cause excessive
Parameter
A
. The maximum allowable power dissipation at any ambient temperture is calculated using:
OUT(NOM)
f = 1 kHz, C
C
R
(Note
V
OUT
OUT
L
+ Dropout Voltage to maintain output regulation. Dropout Voltage is defined as the input to output differential
= 0 (Steady State)
≥
= 10 µF
8)
V
Conditions
o
(NOM) −5%
BYPASS
IN
to V
OUT
= 10 nF
terminals that is normally reverse-biased. Reversing the polarity from V
5
Typ
400
350
45
OUT
> 0.5V, and then reduces the maximum output current as
LP2985AI-X.X
Min
J
(MAX), the junction-to-ambient thermal resistance, θ
(Note
6)
Max
Min
LP2985I-X.X
(Note
6)
Max
www.national.com
IN
to V
Units
OUT
mA
mA
dB
J-