LP2980.pdf

(423 KB) Pobierz
April 2000
LP2980
Micropower 50 mA Ultra Low-Dropout Regulator
General Description
The LP2980 is a 50 mA, fixed-output voltage regulator de-
signed
Features
n Ultra low dropout voltage
n Output voltage accuracy 0.5% (A Grade)
n Guaranteed 50 mA output current
n Smallest possible size (SOT-23, micro SMD package)
n Requires only 1 µF external capacitance
n < 1 µA quiescent current when shutdown
n Low ground pin current at all load currents
n High peak current capability (150 mA typical)
n Wide supply voltage range (16V max)
n Fast dynamic response to line and load
n Low Z OUT over wide frequency range
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
specifically
to
meet
the
requirements
of
battery-powered applications.
Using an optimized VIP ™ (Vertically Integrated PNP) pro-
cess, the LP2980 delivers unequaled performance in all
specifications 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.
Smallest Possible Size. SOT-23 and micro SMD packages
use an absolute minimum board space.
Minimum Part Count. Requires only 1 µF of external ca-
pacitance on the regulator output.
Precision Output. 0.5% tolerance output voltages available
(A grade).
5.0V, 3.3V, and 3.0V versions available as standard prod-
ucts.
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistant (PDA)
n Camcorder, Personal Stereo, Camera
Block Diagram
DS012078-1
Connection Diagram and Ordering Information
5-Lead Small Outline Package (M5)
micro SMD, 5 Bump Package (BPA05)
DS012078-60
Bottom View
See NS Package Number BPA05
DS012078-3
Top View
See NS Package Number MF05A
For ordering information see Table 1
VIP ™ is a trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation
DS012078
www.national.com
777320995.005.png 777320995.006.png
Ordering Information
TABLE 1. Package Marking and Order Information
Output Voltage
(V)
Grade
Order Information
Package
Marking
Supplied as:
5-Lead Small Outline Package (M5)
For output voltages
£
2V, refer to LP2980LV datasheet. If a non-standard voltage is required, see LP2980-ADJ.
2.5
A
LP2980AIM5X-2.5
L0NA
3000 Units on Tape and Reel
2.5
A
LP2980AIM5-2.5
L0NA
1000 Units on Tape and Reel
2.5
STD
LP2980IM5X-2.5
L0NB
3000 Units on Tape and Reel
2.5
STD
LP2980IM5-2.5
L0NB
1000 Units on Tape and Reel
2.6
A
LP2980AIM5X-2.6
L48A
3000 Units on Tape and Reel
2.6
A
LP2980AIM5-2.6
L48A
1000 Units on Tape and Reel
2.6
STD
LP2980IM5X-2.6
L48B
3000 Units on Tape and Reel
2.6
STD
LP2980IM5-2.6
L48B
1000 Units on Tape and Reel
2.7
A
LP2980AIM5X-2.7
L26A
3000 Units on Tape and Reel
2.7
A
LP2980AIM5-2.7
L26A
1000 Units on Tape and Reel
2.7
STD
LP2980IM5X-2.7
L26B
3000 Units on Tape and Reel
2.7
STD
LP2980IM5-2.7
L26B
1000 Units on Tape and Reel
2.8
A
LP2980AIM5X-2.8
L13A
3000 Units on Tape and Reel
2.8
A
LP2980AIM5-2.8
L13A
1000 Units on Tape and Reel
2.8
STD
LP2980IM5X-2.8
L13B
3000 Units on Tape and Reel
2.8
STD
LP2980IM5-2.8
L13B
1000 Units on Tape and Reel
2.9
A
LP2980AIM5X-2.9
L12A
3000 Units on Tape and Reel
2.9
A
LP2980AIM5-2.9
L12A
1000 Units on Tape and Reel
2.9
STD
LP2980IM5X-2.9
L12B
3000 Units on Tape and Reel
2.9
STD
LP2980IM5-2.9
L12B
1000 Units on Tape and Reel
3.0
A
LP2980AIM5X-3.0
L02A
3000 Units on Tape and Reel
3.0
A
LP2980AIM5-3.0
L02A
1000 Units on Tape and Reel
3.0
STD
LP2980IM5X-3.0
L02B
3000 Units on Tape and Reel
3.0
STD
LP2980IM5-3.0
L02B
1000 Units on Tape and Reel
3.1
A
LP2980AIM5X-3.1
L30A
3000 Units on Tape and Reel
3.1
A
LP2980AIM5-3.1
L30A
1000 Units on Tape and Reel
3.1
STD
LP2980IM5X-3.1
L30B
3000 Units on Tape and Reel
3.1
STD
LP2980IM5-3.1
L30B
1000 Units on Tape and Reel
3.2
A
LP2980AIM5X-3.2
L31A
3000 Units on Tape and Reel
3.2
A
LP2980AIM5-3.2
L31A
1000 Units on Tape and Reel
3.2
STD
LP2980IM5X-3.2
L31B
3000 Units on Tape and Reel
3.2
STD
LP2980IM5-3.2
L31B
1000 Units on Tape and Reel
3.3
A
LP2980AIM5X-3.3
L00A
3000 Units on Tape and Reel
3.3
A
LP2980AIM5-3.3
L00A
1000 Units on Tape and Reel
3.3
STD
LP2980IM5X-3.3
L00B
3000 Units on Tape and Reel
3.3
STD
LP2980IM5-3.3
L00B
1000 Units on Tape and Reel
3.5
A
LP2980AIM5X-3.5
L27A
3000 Units on Tape and Reel
3.5
A
LP2980AIM5-3.5
L27A
1000 Units on Tape and Reel
3.5
STD
LP2980IM5X-3.5
L27B
3000 Units on Tape and Reel
3.5
STD
LP2980IM5-3.5
L27B
1000 Units on Tape and Reel
3.6
A
LP2980AIM5X-3.6
L28A
3000 Units on Tape and Reel
3.6
A
LP2980AIM5-3.6
L28A
1000 Units on Tape and Reel
3.6
STD
LP2980IM5X-3.6
L28B
3000 Units on Tape and Reel
3.6
STD
LP2980IM5-3.6
L28B
1000 Units on Tape and Reel
www.national.com
2
777320995.007.png
Ordering Information (Continued)
TABLE 1. Package Marking and Order Information (Continued)
Output Voltage
(V)
Grade
Order Information
Package
Marking
Supplied as:
For output voltages
2V, refer to LP2980LV datasheet. If a non-standard voltage is required, see LP2980-ADJ.
£
3.8
A
LP2980AIM5X-3.8
L21A
3000 Units on Tape and Reel
3.8
A
LP2980AIM5-3.8
L21A
1000 Units on Tape and Reel
3.8
STD
LP2980IM5X-3.8
L21B
3000 Units on Tape and Reel
3.8
STD
LP2980IM5-3.8
L21B
1000 Units on Tape and Reel
4.0
A
LP2980AIM5X-4.0
L25A
3000 Units on Tape and Reel
4.0
A
LP2980AIM5-4.0
L25A
1000 Units on Tape and Reel
4.0
STD
LP2980IM5X-4.0
L25B
3000 Units on Tape and Reel
4.0
STD
LP2980IM5-4.0
L25B
1000 Units on Tape and Reel
4.5
A
LP2980AIM5X-4.5
L0XA
3000 Units on Tape and Reel
4.5
A
LP2980AIM5-4.5
L0XA
1000 Units on Tape and Reel
4.5
STD
LP2980IM5X-4.5
L0XB
3000 Units on Tape and Reel
4.5
STD
LP2980IM5-4.5
L0XB
1000 Units on Tape and Reel
4.7
A
LP2980AIM5X-4.7
L37A
3000 Units on Tape and Reel
4.7
A
LP2980AIM5-4.7
L37A
1000 Units on Tape and Reel
4.7
STD
LP2980IM5X-4.7
L37B
3000 Units on Tape and Reel
4.7
STD
LP2980IM5-4.7
L37B
1000 Units on Tape and Reel
5.0
A
LP2980AIM5X-5.0
L01A
3000 Units on Tape and Reel
5.0
A
LP2980AIM5-5.0
L01A
1000 Units on Tape and Reel
5.0
STD
LP2980IM5X-5.0
L01B
3000 Units on Tape and Reel
5.0
STD
LP2980IM5-5.0
L01B
1000 Units on Tape and Reel
micro SMD, 5 Bump Package (BPA05)
3.3
A
LP2980AIBP-3.3
250 Units on Tape and Reel
3.3
A
LP2980AIBPX-3.3
3000 Units on Tape and Reel
3.3
STD
LP2980IBP-3.3
250 Units on Tape and Reel
3.3
STD
LP2980IBPX-3.3
3000 Units on Tape and Reel
5.0
A
LP2980AIBP-5.0
250 Units on Tape and Reel
5.0
A
LP2980AIBPX-5.0
3000 Units on Tape and Reel
5.0
STD
LP2980IBP-5.0
250 Units on Tape and Reel
5.0
STD
LP2980IBPX-5.0
3000 Units on Tape and Reel
3
www.national.com
777320995.008.png
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
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
−65˚C to +150˚C
Output Voltage (Survival), (Note 4)
−0.3V to +9V
Operating Junction Temperature
Range
I OUT (Survival)
Short Circuit Protected
−40˚C to +125˚C
Input-Output Voltage (Survival),
(Note 5)
Lead Temperature
(Soldering, 5 sec.)
−0.3V to +16V
260˚C
Electrical Characteristics
Limits in standard typeface are for T J = 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
less 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
LP2980I-XX
Units
(Note 6)
(Note 6)
Min
Max
Min
Max
D
V O
Output Voltage
Tolerance
I L = 1 mA
−0.50
0.50
−1.0
1.0
%V NOM
1mA < I L < 50 mA
−0.75
0.75
−1.5
1.5
−2.5
2.5
−3.5
3.5
Output Voltage
V O(NOM) +1V
0.014
0.014
0.007
%/V
Line Regulation
£
V IN
£
16V
0.032
0.032
V IN –V O
Dropout Voltage
I L = 0
1
3
3
mV
(Note 7)
5
5
I L = 1 mA
7
10
10
15
15
I L = 10 mA
40
60
60
90
90
I L = 50 mA
120
150
150
225
225
I GND
Ground Pin Current
I L = 0
65
95
95
µA
125
125
I L = 1 mA
80
110
110
170
170
I L = 10 mA
140
220
220
460
460
I L = 50 mA
375
600
600
1200
1200
V ON/OFF < 0.18V
0
1
1
V ON/OFF
ON/OFF Input Voltage
High = O/P ON
1.4
1.6
1.6
V
(Note 8)
Low = O/P OFF
0.55
0.18
0.18
I ON/OFF
ON/OFF Input Current
V ON/OFF =0
0
−1
−1
µA
V ON/OFF =5V
5
15
15
I O(PK)
Peak Output Current
V OUT
³ V O(NOM) − 5%
150
100
100
mA
e n
Output Noise
BW = 300 Hz–50 kHz,
160
µV
Voltage (RMS)
C OUT =10µF
Ripple Rejection
f = 1 kHz
63
dB
C OUT =10µF
I O(MAX)
Short Circuit Current
R L = 0 (Steady State)
150
mA
(Note 9)
Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the de-
vice outside of its rated operating conditions.
Note 2: The ESD rating of pins 3 and 4 is 1 kV.
www.national.com
4
777320995.001.png 777320995.002.png 777320995.003.png
Electrical Characteristics (Continued)
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, T J(MAX) , the junction-to-ambient thermal resistance,
q JA , and
the ambient temperature, T A . The maximum allowable power dissipation at any ambient temperature is calculated using:
The value of
JA for the SOT-23 package is 220˚C/W and the micro SMD package is 320˚C/W. Exceeding the maximum allowable power dissipation will cause ex-
cessive 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 LP2980 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V IN and V OUT terminals that is normally reverse-biased. Reversing the polarity from V IN to V OUT
will turn on this diode (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: 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 inputs must be properly driven to prevent misoperation. For details, refer to Application Hints.
Note 9: See Typical Performance Characteristics curves.
q
Basic Application Circuit
DS012078-2
* ON/OFF input must be actively terminated. Tie to V IN if this function is not to be used.
** Minimum Output Capacitance is 1 µF to insure stability over full load current range. More capacitance provides superior dynamic performance and additional
stability margin (see Application Hints).
*** Do not make connections to this pin.
5
www.national.com
777320995.004.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin