NSC LP2989IMX-3.3, LP2989IM-3.3, LP2989AIMM-3.3, LP2989AIM-5.0 Datasheet

LP2989 Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors
General Description
The LP2989 is a fixed-output 500 mA precision LDO regu­lator designed for use with ceramic output capacitors.
Output noise can be reduced to 18µV (typical) by connecting an external 10 nF capacitor to the bypass pin.
Using an optimized VIP
(Vertically Integrated PNP) pro-
cess, the LP2989 delivers superior performance: Dropout Voltage: Typically 310 mV
@
500 mA load, and 1
mV
@
100 µA load.
Ground Pin Current: Typically 3 mA
@
500 mA load, and
110 µA
@
100 µA load.
Sleep Mode: The LP2989 draws less than 0.8 µA quiescent current when shutdown pin is pulled low.
Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.
Precision Output: Guaranteed output voltage accuracy is
0.75% (“A” grade) and 1.25% (standard grade) at room temperature.
For output voltages
<
2V, see LP2989LV datasheet.
Features
n Ultra low dropout voltage n Guaranteed 500 mA continuous output current n Very low output noise with external capacitor n SO-8, Mini SO-8, 8 Lead LLP surface mount packages
n
<
0.8 µA quiescent current when shutdown
n Low ground pin current at all loads n 0.75% output voltage accuracy (“A” grade) n High peak current capability (800 mA typical) n Wide supply voltage range (16V max) n Overtemperature/overcurrent protection n −40˚C to +125˚C junction temperature range
Applications
n Notebook/Desktop PC n PDA/Palmtop Computer n Wireless Communication Terminals n SMPS Post-Regulator
Block Diagram
10133901
VIP™is a trademark of National Semiconductor Corporation.
June 2002
LP2989 Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator
For Use with Ceramic Output Capacitors
© 2002 National Semiconductor Corporation DS101339 www.national.com
Connection Diagrams
Surface Mount Packages: 8 Lead LLP Surface Mount Package
10133902
SO-8/Mini SO-8 Package
See NS Package Drawing Numbers M08A/MUA08A
10133950
Top View
See NS Package Number LDC08A
Basic Application Circuit
10133903
*
Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger output capacitor provides improved dynamic
response. See Application Hints.
**
Shutdown must be actively terminated (see App. Hints). Tie to INPUT (Pin4) if not used
LP2989
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Ordering Information
TABLE 1. Package Marking and Ordering Information
Output Voltage Grade Order Information Package Marking Supplied as:
8 Lead LLP
2.5 A LP2989AILD-2.5 L01FA 1000 Units on Tape and Reel
2.5 A LP2989AILDX-2.5 L01FA 4500 Units on Tape and Reel
2.5 STD LP2989ILD-2.5 L01FAB 1000 Units on Tape and Reel
2.5 STD LP2989ILDX-2.5 L01FAB 4500 Units on Tape and Reel
2.8 A LP2989AILD-2.8 L000A 1000 Units on Tape and Reel
2.8 A LP2989AILDX-2.8 L000A 4500 Units on Tape and Reel
2.8 STD LP2989ILD-2.8 L000AB 1000 Units on Tape and Reel
2.8 STD LP2989ILDX-2.8 L000AB 4500 Units on Tape and Reel
2.85 A LP2989AILD-285 L01TA 1000 Units on Tape and Reel
2.85 A LP2989AILDX-285 L01TA 4500 Units on Tape and Reel
2.85 STD LP2989ILD-285 L01TAB 1000 Units on Tape and Reel
2.85 STD LP2989ILDX-285 L01TAB 4500 Units on Tape and Reel
3.0 A LP2989AILD-3.0 L01HA 1000 Units on Tape and Reel
3.0 A LP2989AILDX-3.0 L01HA 4500 Units on Tape and Reel
3.0 STD LP2989ILD-3.0 L01HAB 1000 Units on Tape and Reel
3.0 STD LP2989ILDX-3.0 L01HAB 4500 Units on Tape and Reel
3.3 A LP2989AILD-3.3 L01JA 1000 Units on Tape and Reel
3.3 A LP2989AILDX-3.3 L01JA 4500 Units on Tape and Reel
3.3 STD LP2989ILD-3.3 L01JAB 1000 Units on Tape and Reel
3.3 STD LP2989ILDX-3.3 L01JAB 4500 Units on Tape and Reel
3.6 A LP2989AILD-3.6 L019A 1000 Units on Tape and Reel
3.6 A LP2989AILDX-3.6 L019A 4500 Units on Tape and Reel
3.6 STD LP2989ILD-3.6 L019AB 1000 Units on Tape and Reel
3.6 STD LP2989ILDX-3.6 L019AB 4500 Units on Tape and Reel
4.0 A LP2989AILD-4.0 L01LA 1000 Units on Tape and Reel
4.0 A LP2989AILDX-4.0 L01LA 4500 Units on Tape and Reel
4.0 STD LP2989ILD-4.0 L01LAB 1000 Units on Tape and Reel
4.0 STD LP2989ILDX-4.0 L01LAB 4500 Units on Tape and Reel
5.0 A LP2989AILD-5.0 L01KA 1000 Units on Tape and Reel
5.0 A LP2989AILDX-5.0 L01KA 4500 Units on Tape and Reel
5.0 STD LP2989ILD-5.0 L01KAB 1000 Units on Tape and Reel
5.0 STD LP2989ILDX-5.0 L01KAB 4500 Units on Tape and Reel
8 Lead MSOP (MM)
2.5 A LP2989AIMM-2.5 LA0A 1000 Units on Tape and Reel
2.5 A LP2989AIMMX-2.5 LA0A 3500 Units on Tape and Reel
2.5 STD LP2989IMM-2.5 LA0B 1000 Units on Tape and Reel
2.5 STD LP2989IMMX-2.5 LA0B 3500 Units on Tape and Reel
2.8 A LP2989AIMM-2.8 LA6A 1000 Units on Tape and Reel
2.8 A LP2989AIMMX-2.8 LA6A 3500 Units on Tape and Reel
2.8 STD LP2989IMM-2.8 LA6B 1000 Units on Tape and Reel
2.8 STD LP2989IMMX-2.8 LA6B 3500 Units on Tape and Reel
3.0 A LP2989AIMM-3.0 LA1A 1000 Units on Tape and Reel
3.0 A LP2989AIMMX-3.0 LA1A 3500 Units on Tape and Reel
3.0 STD LP2989IMM-3.0 LA1B 1000 Units on Tape and Reel
3.0 STD LP2989IMMX-3.0 LA1B 3500 Units on Tape and Reel
3.3 A LP2989AIMM-3.3 LA2A 1000 Units on Tape and Reel
3.3 A LP2989AIMMX-3.3 LA2A 3500 Units on Tape and Reel
LP2989
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Ordering Information (Continued)
TABLE 1. Package Marking and Ordering Information (Continued)
Output Voltage Grade Order Information Package Marking Supplied as:
3.3 STD LP2989IMM-3.3 LA2B 1000 Units on Tape and Reel
3.3 STD LP2989IMMX-3.3 LA2B 3500 Units on Tape and Reel
5.0 A LP2989AIMM-5.0 LA4A 1000 Units on Tape and Reel
5.0 A LP2989AIMMX-5.0 LA4A 3500 Units on Tape and Reel
5.0 STD LP2989IMM-5.0 LA4B 1000 Units on Tape and Reel
5.0 STD LP2989IMMX-5.0 LA4B 3500 Units on Tape and Reel
LP2989
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Ordering Information (Continued)
TABLE 1. Package Marking and Ordering Information (Continued)
Output Voltage Grade Order Information Package Marking Supplied as:
SO-8 (M)
2.5 A LP2989AIMX-2.5 LP2989AIM2.5 2500 Units on Tape and Reel
2.5 A LP2989AIM-2.5 LP2989AIM2.5 Shipped in Anti-Static Rails
2.5 STD LP2989IMX-2.5 LP2989IM2.5 2500 Units on Tape and Reel
2.5 STD LP2989IM-2.5 LP2989IM2.5 Shipped in Anti-Static Rails
3.3 A LP2989AIMX-3.3 LP2989AIM3.3 2500 Units on Tape and Reel
3.3 A LP2989AIM-3.3 LP2989AIM3.3 Shipped in Anti-Static Rails
3.3 STD LP2989IMX-3.3 LP2989IM3.3 2500 Units on Tape and Reel
3.3 STD LP2989IM-3.3 LP2989IM3.3 Shipped in Anti-Static Rails
5.0 A LP2989AIMX-5.0 LP2989AIM5.0 2500 Units on Tape and Reel
5.0 A LP2989AIM-5.0 LP2989AIM5.0 Shipped in Anti-Static Rails
5.0 STD LP2989IMX-5.0 LP2989IM5.0 2500 Units on Tape and Reel
5.0 STD LP2989IM-5.0 LP2989IM5.0 Shipped in Anti-Static Rails
For output voltages<2V, see LP2989LV datasheet.
LP2989
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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 −65˚C to +150˚C
Operating Junction Temperature Range −40˚C to +125˚C
Lead Temperature (Soldering, 5 seconds) 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
Sense Pin −0.3V to +6V
Output Voltage (Survival) (Note 4) −0.3V to +16V
I
OUT
(Survival) Short Circuit
Protected
Input-Output Voltage (Survival) (Note 5) −0.3V to +16V
Electrical Characteristics
Limits in standard typeface are for TJ= 25˚C, and limits in boldface type apply over the full operating temperature range. Un­less otherwise specified: V
IN=VO
(NOM) + 1V, IL= 1 mA, C
OUT
= 4.7 µF, CIN= 2.2 µF, V
S/D
= 2V.
Symbol Parameter Conditions Typical
LP2989AI-X.X
(Note 6)
LP2989I-X.X
(Note 6)
Units
Min Max Min Max
V
O
Output Voltage Tolerance
−0.75 0.75 −1.25 1.25
%V
NOM
1mA<I
L
<
500 mA
V
O
(NOM) + 1V VIN≤
16V
−1.5 1.5 −2.5 2.5
−4.0 2.5 −5.0 3.5
1mA
<
I
L
<
500 mA
V
O
(NOM) + 1V VIN≤
16V
−25˚C T
J
125˚C
−3.5 2.5 −4.5 3.5
Output Voltage Line Regulation
VO(NOM) + 1V VIN≤ 16V
0.005
0.014 0.014 %/V
0.032 0.032
Load Regulation 1 mA<I
L
<
500 mA 0.4 %V
NOM
VIN–V
O
Dropout Voltage (Note 7)
IL= 100 µA
1
33
mV
44
I
L
= 200 mA
150
200 200
300 300
I
L
= 500 mA
310
425 425
650 650
I
GND
Ground Pin Current IL= 100 µA
110
175 175
µA
200 200
I
L
= 200 mA
1
22
mA
3.5 3.5
I
L
= 500 mA
3
66
99
V
S/D
<
0.18V 0.5 2 2 µA
V
S/D
<
0.4V 0.05 0.8 0.8
I
O
(PK) Peak Output Current V
OUT
VO(NOM) − 5% 800 600 600
mA
I
O
(MAX) Short Circuit Current RL= 0 (Steady State)
(Note 9)
1000
e
n
Output Noise Voltage (RMS)
BW = 100 Hz to 100 kHz, C
OUT
=10µF
C
BYPASS
= .01 µF
V
OUT
= 2.5V
18 µV(RMS)
LP2989
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