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LP2980 Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23 Package
January 8, 2009
LP2980
Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23
Package
General Description
The LP2980 is a 50 mA, fixed-output voltage regulator de-
signed specifically to meet the requirements of battery-pow-
ered applications.
Using an optimized VIP
®
(Vertically Integrated PNP) process,
the LP2980 delivers unequaled performance in all specifica-
tions critical to battery-powered designs:
Dropout Voltage.
Typically 120 mV @ 50 mA load, and 7 mV
@ 1 mA load.
Ground Pin Current.
Typically 375
μA
@ 50 mA load, and
80
μA
@ 1 mA load.
Sleep Mode.
Less than 1
μA
quiescent current when ON/
OFF pin is pulled low.
Minimum Part Count.
Requires only 1
μF
of external capac-
itance on the regulator output.
Precision Output.
0.5% tolerance output voltages available
(A grade).
5.0V, 4.7V, 3.3V, 3.0V and 2.5V versions available as stan-
dard products.
Features
■
■
■
■
■
■
■
■
■
■
■
■
Ultra low dropout voltage
Output voltage accuracy 0.5% (A Grade)
Guaranteed 50 mA output current
Requires only 1
μF
external capacitance
< 1 μA
quiescent current when shutdown
Low ground pin current at all load currents
High peak current capability (150 mA typical)
Wide supply voltage range (16V max)
Fast dynamic response to line and load
Low Z
OUT
over wide frequency range
Over-Temperature and Over-Current protection
−40°C to +125°C junction temperature range
Applications
■
■
■
■
Cellular Phone
Palmtop/Laptop Computer
Personal Digital Assistant (PDA)
Camcorder, Personal Stereo, Camera
Block Diagram
1207801
VIP
®
is a registered trademark of National Semiconductor Corporation.
© 2009 National Semiconductor Corporation
12078
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LP2980
Connection Diagram
5-Lead Small Outline Package (SOT-23)
1207803
Top View
See NS Package Number MF05A
Pin Descriptions
Name
V
IN
GND
ON/OFF
N/C
V
OUT
Pin
Number
1
2
3
4
5
Function
Input Voltage
Common Ground (device substrate)
Logic high enable input
Post package trim -
do not
connect to this pin
Regulated output voltage
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2
LP2980
Ordering Information
TABLE 1. Package Marking and Order Information
If a non-standard voltage is required, see the LP2980-ADJ.
Output Voltage (V)
Grade
A
2.5
STD
A
2.8
STD
A
2.9
STD
A
3.0
STD
A
3.2
STD
A
3.3
STD
A
3.8
STD
A
4.7
STD
A
5.0
STD
Order
Information
LP2980AIM5X-2.5
LP2980AIM5-2.5
LP2980IM5X-2.5
LP2980IM5-2.5
LP2980AIM5X-2.8
LP2980AIM5-2.8
LP2980IM5X-2.8
LP2980IM5-2.8
LP2980AIM5X-2.9
LP2980AIM5-2.9
LP2980IM5X-2.9
LP2980IM5-2.9
LP2980AIM5X-3.0
LP2980AIM5-3.0
LP2980IM5X-3.0
LP2980IM5-3.0
LP2980AIM5X-3.2
LP2980AIM5-3.2
LP2980IM5X-3.2
LP2980IM5-3.2
LP2980AIM5X-3.3
LP2980AIM5-3.3
LP2980IM5X-3.3
LP2980IM5-3.3
LP2980AIM5X-3.8
LP2980AIM5-3.8
LP2980IM5X-3.8
LP2980IM5-3.8
LP2980AIM5X-4.7
LP2980AIM5-4.7
LP2980IM5X-4.7
LP2980IM5-4.7
LP2980AIM5X-5.0
LP2980AIM5-5.0
LP2980IM5X-5.0
LP2980IM5-5.0
Package
Marking
L0NA
L0NA
L0NB
L0NB
L13A
L13A
L13B
L13B
L12A
L12A
L12B
L12B
L02A
L02A
L02B
L02B
L31A
L31A
L31B
L31B
L00A
L00A
L00B
L00B
L21A
L21A
L21B
L21B
L37A
L37A
L37B
L37B
L01A
L01A
L01B
L01B
Supplied as
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3
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LP2980
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Operating Junction Temperature
Range
Lead Temperature
(Soldering, 5 sec.)
−65°C to +150°C
−40°C to +125°C
260°C
ESD Rating (Note 2)
2 kV
Power Dissipation (Note 3)
Internally Limited
Input Supply Voltage (Survival)
−0.3V to +16V
Input Supply Voltage (Operating)
2.1V to +16V
Shutdown Input Voltage (Survival)
−0.3V to +16V
Output Voltage (Survival), (Note 4)
−0.3V to +9V
I
OUT
(Survival)
Short Circuit Protected
Input-Output Voltage (Survival),
(Note
5)
−0.3V to +16V
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C, and limits in
boldface type
apply over the full operating temperature range. Unless
otherwise specified: V
IN
= V
O(NOM)
+ 1V, I
L
= 1 mA, C
OUT
= 1 μF,
V
ON/OFF
= 2V.
Symbol
Parameter
Conditions
Typ
LP2980AI-XX
(Note 6)
Min
ΔV
O
Output Voltage Tolerance I
L
= 1 mA
1 mA < I
L
< 50 mA
Output Voltage
Line Regulation
V
IN
–V
O
Dropout Voltage
(Note 7)
I
L
= 1 mA
I
L
= 10 mA
I
L
= 50 mA
I
GND
Ground Pin Current
I
L
= 0
I
L
= 1 mA
I
L
= 10 mA
I
L
= 50 mA
V
ON/OFF
< 0.18V
V
ON/OFF
I
ON/OFF
I
O(PK)
e
n
ON/OFF Input Voltage
(Note 8)
ON/OFF Input Current
Peak Output Current
Output Noise
Voltage (RMS)
Ripple Rejection
I
O(MAX)
Short Circuit Current
High = O/P ON
Low = O/P OFF
V
ON/OFF
= 0
V
ON/OFF
= 5V
V
OUT
≥
V
O(NOM)
− 5%
BW = 300 Hz–50 kHz,
C
OUT
= 10 μF
f = 1 kHz
C
OUT
= 10 μF
R
L
= 0 (Steady State)
(Note 9)
150
mA
63
dB
7
40
120
65
80
140
375
0
1.4
0.55
0
5
150
160
100
1.6
0.18
−1
15
100
V
O(NOM)
+ 1V
≤
V
IN
≤
16V
I
L
= 0
1
0.007
−0.50
−0.75
−2.5
Max
0.50
0.75
2.5
0.014
0.032
3
5
10
15
60
90
150
225
95
125
110
170
220
460
600
1200
1
1.6
0.18
−1
15
mA
μV
μA
LP2980I-XX
(Note 6)
Min
−1.0
−1.5
−3.5
Max
1.0
1.5
3.5
0.014
0.032
3
5
10
15
60
90
150
225
95
125
110
170
220
460
600
1200
1
V
μA
mV
%/V
%V
NOM
Units
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4