NSC LP2988IM-2.5, LP2988AIMX-3.3, LP2988AIMX-3.0, LP2988AIMX-2.5, LP2988AIMMX-5.0 Datasheet
...
March 1999
LP2987/LP2988
Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)
General Description
The LP2987/8 are fixed-output 200 mA precision LDO voltage regulators with power-ON reset delay which can be implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical applications. A single external capacitor connected to the Bypass pin reduces regulator output noise.
Using an optimized VIP™ (Vertically Integrated PNP) process, these regulators deliver superior performance:
Dropout Voltage: 180 mV @ 200 mA load, and 1 mV @ 1 mA load (typical).
Ground Pin Current: 1 mA @ 200 mA load, and 200 µA @ 10 mA load (typical).
Sleep Mode: The LP2987/8 draws less than 2 µA quiescent current when shutdown pin is held low.
Error Flag/Reset: The error flag goes low when the output drops approximately 5% below nominal. This pin also provides a power-ON reset signal if a capacitor is connected to the DELAY pin.
Precision Output: Standard product versions of the LP2987 and LP2988 are available with output voltages of 5.0V, 3.8V, 3.3V, 3.2V, 3.0V, or 2.8V, with guaranteed accuracy of 0.5% (ªAº grade) and %1 (standard grade) at room temperature.
Features
nUltra low dropout voltage
nPower-ON reset delay requires only one component
nBypass pin for reduced output noise (LP2988)
nGuaranteed continuous output current 200 mA
nGuaranteed peak output current > 250 mA
nSO-8 and mini SO-8 surface mount packages
n<2 µA quiescent current when shutdown
nLow ground pin current at all loads
n0.5% output voltage accuracy (ªAº grade)
nWide supply voltage range (16V max)
nOvertemperature/overcurrent protection
n−40ÊC to +125ÊC junction temperature range
Applications
nCellular Phone
nPalmtop/Laptop Computer
nCamcorder, Personal Stereo, Camera
Block Diagrams
DS100017-1
DS100017-2
VIP™ is a trademark of National Semiconductor Corporation.
Programmable with Regulator Voltage Dropout-Low Ultra mA 200 Micropower, LP2987/LP2988
Delay Reset On-Power
© 1999 National Semiconductor Corporation |
DS100017 |
www.national.com |
Connection Diagram (LP2987)
Surface Mount Packages:
Mini SO-8 Package Type MM: See NS Package Drawing Number MUA08A
SO-8 Package Type M: See NS Package Drawing Number M08A
DS100017-3
Top View
For ordering information, refer to Table 1 in this document.
Ordering Information (LP2987)
TABLE 1. Package Marking and Ordering Information
Output Voltage |
Grade |
Order Information |
Package Marking |
Supplied as: |
|
|
|
|
|
5 |
A |
LP2987AIMMX-5.0 |
L44A |
3.5k Units on Tape and Reel |
|
|
|
|
|
5 |
A |
LP2987AIMM-5.0 |
L44A |
250 Units on Tape and Reel |
|
|
|
|
|
5 |
STD |
LP2987IMMX-5.0 |
L44B |
3.5k Units on Tape and Reel |
|
|
|
|
|
5 |
STD |
LP2987IMM-5.0 |
L44B |
250 Units on Tape and Reel |
|
|
|
|
|
3.8 |
A |
LP2987AIMMX-3.8 |
L96A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
A |
LP2987AIMM-3.8 |
L96A |
250 Units on Tape and Reel |
|
|
|
|
|
3.8 |
STD |
LP2987IMMX-3.8 |
L96B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
STD |
LP2987IMM-3.8 |
L96B |
250 Units on Tape and Reel |
|
|
|
|
|
3.3 |
A |
LP2987AIMMX-3.3 |
L43A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
A |
LP2987AIMM-3.3 |
L43A |
250 Units on Tape and Reel |
|
|
|
|
|
3.3 |
STD |
LP2987IMMX-3.3 |
L43B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
STD |
LP2987IMM-3.3 |
L43B |
250 Units on Tape and Reel |
|
|
|
|
|
3.2 |
A |
LP2987AIMMX-3.2 |
L66A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
A |
LP2987AIMM-3.2 |
L66A |
250 Units on Tape and Reel |
|
|
|
|
|
3.2 |
STD |
LP2987IMMX-3.2 |
L66B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
STD |
LP2987IMM-3.2 |
L66B |
250 Units on Tape and Reel |
|
|
|
|
|
3.0 |
A |
LP2987AIMMX-3.0 |
L42A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.0 |
A |
LP2987AIMM-3.0 |
L42A |
250 Units on Tape and Reel |
|
|
|
|
|
3.0 |
STD |
LP2987IMMX-3.0 |
L42B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.0 |
STD |
LP2987IMM-3.0 |
L42B |
250 Units on Tape and Reel |
|
|
|
|
|
2.8 |
A |
LP2987AIMMX-2.8 |
L89A |
3.5k Units on Tape and Reel |
|
|
|
|
|
2.8 |
A |
LP2987AIMM-2.8 |
L89A |
250 Units on Tape and Reel |
|
|
|
|
|
2.8 |
STD |
LP2987IMMX-2.8 |
L89B |
3.5k Units on Tape and Reel |
|
|
|
|
|
2.8 |
STD |
LP2987IMM-2.8 |
L89B |
250 Units on Tape and Reel |
|
|
|
|
|
5 |
A |
LP2987AIMX-5.0 |
2987AIM5.0 |
2.5k Units on Tape and Reel |
|
|
|
|
|
5 |
A |
LP2987AIM-5.0 |
2987AIM5.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
5 |
STD |
LP2987IMX-5.0 |
2987IM5.0 |
2.5k Units on Tape and Reel |
|
|
|
|
|
5 |
STD |
LP2987IM-5.0 |
2987IM5.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.8 |
A |
LP2987AIMX-3.8 |
2987AIM3.8 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
A |
LP2987AIM-3.8 |
2987AIM3.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.8 |
STD |
LP2987IMX-3.8 |
2987IM3.8 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
STD |
LP2987IM-3.8 |
2987IM3.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.3 |
A |
LP2987AIMX-3.3 |
2987AIM3.3 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
A |
LP2987AIM-3.3 |
2987AIM3.3 |
Shipped in Anti-Static Rails |
|
|
|
|
|
www.national.com |
2 |
Ordering Information (LP2987) (Continued)
TABLE 1. Package Marking and Ordering Information (Continued)
Output Voltage |
Grade |
Order Information |
Package Marking |
Supplied as: |
|
|
|
|
|
3.3 |
STD |
LP2987IMX-3.3 |
2987IM3.3 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
STD |
LP2987IM-3.3 |
2987IM3.3 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.2 |
A |
LP2987AIMX-3.2 |
2987AIM3.2 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
A |
LP2987AIM-3.2 |
2987AIM3.2 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.2 |
STD |
LP2987IMX-3.2 |
2987IM3.2 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
STD |
LP2987AIM-3.2 |
2987IM3.2 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.0 |
A |
LP2987IMX-3.0 |
2987AIM3.0 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.0 |
A |
LP2987AIM-3.0 |
2987AIM3.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.0 |
STD |
LP2987IMX-3.0 |
2987IM3.0 |
2.5 Units on Tape and Reel |
|
|
|
|
|
3.0 |
STD |
LP2987IM-3.0 |
2987IM3.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
2.8 |
A |
LP2987AIMX-2.8 |
2987AIM2.8 |
2.5 Units on Tape and Reel |
|
|
|
|
|
2.8 |
A |
LP2987AIM-2.8 |
2987AIM2.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
2.8 |
STD |
LP2987IMX-2.8 |
2987IM2.8 |
2.5 Units on Tape and Reel |
|
|
|
|
|
2.8 |
STD |
LP298AIM-2.8 |
298AIM2.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3 |
www.national.com |
Connection Diagram (LP2988)
Surface Mount Packages:
Mini SO-8 Package Type MM: See NS Package Drawing Number MUA08A
SO-8 Package Type M: See NS Package Drawing Number M08A
DS100017-16
Top View
For ordering information, refer to Table 2 in this document.
Ordering Information (LP2988)
TABLE 2. Package Marking and Ordering Information
Output Voltage |
Grade |
Order Information |
Package Marking |
Supplied as: |
|
|
|
|
|
5 |
A |
LP2988AIMMX-5.0 |
L51A |
3.5k Units on Tape and Reel |
|
|
|
|
|
5 |
A |
LP2988AIMM-5.0 |
L51A |
250 Units on Tape and Reel |
|
|
|
|
|
5 |
STD |
LP2988IMMX-5.0 |
L51B |
3.5k Units on Tape and Reel |
|
|
|
|
|
5 |
STD |
LP2988IMM-5.0 |
L51B |
250 Units on Tape and Reel |
|
|
|
|
|
3.8 |
A |
LP2988AIMMX-3.8 |
L0AA |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
A |
LP2988AIMM-3.8 |
L0AA |
250 Units on Tape and Reel |
|
|
|
|
|
3.8 |
STD |
LP2988IMMX-3.8 |
L0AB |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
STD |
LP2988IMM-3.8 |
L0AB |
250 Units on Tape and Reel |
|
|
|
|
|
3.3 |
A |
LP2988AIMMX-3.3 |
L50A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
A |
LP2988AIMM-3.3 |
L50A |
250 Units on Tape and Reel |
|
|
|
|
|
3.3 |
STD |
LP2988IMMX-3.3 |
L50B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
STD |
LP2988IMM-3.3 |
L50B |
250 Units on Tape and Reel |
|
|
|
|
|
3.2 |
A |
LP2988AIMMX-3.2 |
L67A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
A |
LP2988AIMM-3.2 |
L67A |
250 Units on Tape and Reel |
|
|
|
|
|
3.2 |
STD |
LP2988IMMX-3.2 |
L67B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
STD |
LP2988IMM-3.2 |
L67B |
250 Units on Tape and Reel |
|
|
|
|
|
3.0 |
A |
LP2988AIMMX-3.0 |
L49A |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.0 |
A |
LP2988AIMM-3.0 |
L49A |
250 Units on Tape and Reel |
|
|
|
|
|
3.0 |
STD |
LP2988IMMX-3.0 |
L49B |
3.5k Units on Tape and Reel |
|
|
|
|
|
3.0 |
STD |
LP2988IMM-3.0 |
L49B |
250 Units on Tape and Reel |
|
|
|
|
|
2.8 |
A |
LP2988AIMMX-2.8 |
L0IA |
3.5k Units on Tape and Reel |
|
|
|
|
|
2.8 |
A |
LP2988AIMM-2.8 |
L0IA |
250 Units on Tape and Reel |
|
|
|
|
|
2.8 |
STD |
LP2988IMMX-2.8 |
L0IB |
3.5k Units on Tape and Reel |
|
|
|
|
|
2.8 |
STD |
LP2988IMM-2.8 |
L0IB |
250 Units on Tape and Reel |
|
|
|
|
|
5 |
A |
LP2988AIMX-5.0 |
2988AIM5.0 |
2.5k Units on Tape and Reel |
|
|
|
|
|
5 |
A |
LP2988AIM-5.0 |
2988AIM5.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
5 |
STD |
LP2988IMX-5.0 |
2988IM5.0 |
2.5k Units on Tape and Reel |
|
|
|
|
|
5 |
STD |
LP2988IM-5.0 |
2988IM5.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.8 |
A |
LP2988AIMX-3.8 |
2988AIM3.8 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
A |
LP2988AIM-3.8 |
2988AIM3.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.8 |
STD |
LP2988IMX-3.8 |
2988IM3.8 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.8 |
STD |
LP2988IM-3.8 |
2988IM3.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.3 |
A |
LP2988AIMX-3.3 |
2988AIM3.3 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
A |
LP2988AIM-3.3 |
2988AIM3.3 |
Shipped in Anti-Static Rails |
|
|
|
|
|
www.national.com |
4 |
Ordering Information (LP2988) (Continued)
TABLE 2. Package Marking and Ordering Information (Continued)
Output Voltage |
Grade |
Order Information |
Package Marking |
Supplied as: |
|
|
|
|
|
3.3 |
STD |
LP2988IMX-3.3 |
2988IM3.3 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.3 |
STD |
LP2988IM-3.3 |
2988IM3.3 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.2 |
A |
LP2988AIMX-3.2 |
2988AIM3.2 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
A |
LP2988AIM-3.2 |
2988AIM3.2 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.2 |
STD |
LP2988IMX-3.2 |
2988IM3.2 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.2 |
STD |
LP2988IM-3.2 |
2988IM3.2 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.0 |
A |
LP2988AIMX-3.0 |
2988AIM3.0 |
2.5k Units on Tape and Reel |
|
|
|
|
|
3.0 |
A |
LP2988AIM-3.0 |
2988AIM3.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
3.0 |
STD |
LP2988IMX-3.0 |
2988IM3.0 |
2.5 Units on Tape and Reel |
|
|
|
|
|
3.0 |
STD |
LP2988IM-3.0 |
2988IM3.0 |
Shipped in Anti-Static Rails |
|
|
|
|
|
2.8 |
A |
LP2988AIMX-2.8 |
2988AIM2.8 |
2.5 Units on Tape and Reel |
|
|
|
|
|
2.8 |
A |
LP2988AIM-2.8 |
2988AIM2.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
2.8 |
STD |
LP2988IMX-2.8 |
2988IM2.8 |
2.5 Units on Tape and Reel |
|
|
|
|
|
2.8 |
STD |
LP2988IM-2.8 |
2988IM2.8 |
Shipped in Anti-Static Rails |
|
|
|
|
|
5 |
www.national.com |
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 |
−65ÊC to +150ÊC |
Operating Junction |
|
Temperature Range |
−40ÊC to +125ÊC |
Lead Temperature |
|
(Soldering, 5 seconds) |
260ÊC |
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 Pin |
−0.3V to +16V |
Sense Pin |
−0.3V to +6V |
Output Voltage |
|
(Survival) (Note 4) |
−0.3V to +16V |
IOUT (Survival) |
Short Circuit Protected |
Input-Output Voltage |
|
(Survival) (Note 5) |
−0.3V to +16V |
Electrical Characteristics
Limits in standard typeface are for TJ = 25ÊC, and limits in boldface type apply over the full operating temperature range. Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 4.7 µF, CIN = 2.2 µF, VS/D = 2V.
|
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|
LM2987/8AI-X.X |
LM2987/8I-X.X |
|
||
Symbol |
Parameter |
Conditions |
Typical |
(Note 6) |
(Note 6) |
Units |
||
|
|
|
|
Min |
Max |
Min |
Max |
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|
DVO |
Output Voltage |
|
|
−0.5 |
0.5 |
−1.0 |
1.0 |
|
|
Tolerance |
0.1 mA < IL < 200 mA |
|
−0.8 |
0.8 |
−1.6 |
1.6 |
%VNOM |
|
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|
|
−1.8 |
1.8 |
−2.8 |
2.8 |
|
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|
|
Output Voltage Line |
VO(NOM) + 1V £ VIN £ |
0.007 |
|
0.014 |
|
0.014 |
%/V |
|
Regulation |
16V |
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||
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0.032 |
|
0.032 |
||||
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VIN±VO |
Dropout Voltage |
IL = 100 µA |
1 |
|
2.0 |
|
2.0 |
|
|
(Note 7) |
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3.5 |
|
3.5 |
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|||
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IL = 75 mA |
90 |
|
120 |
|
120 |
mV |
|
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|
170 |
|
170 |
||
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IL = 200 mA |
180 |
|
230 |
|
230 |
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350 |
|
350 |
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IGND |
Ground Pin Current |
IL = 100 µA |
100 |
|
120 |
|
120 |
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150 |
|
150 |
µA |
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IL = 75 mA |
500 |
|
800 |
|
800 |
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||||
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1400 |
|
1400 |
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IL = 200 mA |
1 |
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2.1 |
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2.1 |
mA |
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3.7 |
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3.7 |
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VS/D < 0.3V |
0.05 |
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1.5 |
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1.5 |
µA |
IO(PK) |
Peak Output Current |
VOUT ³ VO(NOM) − 5 % |
400 |
250 |
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250 |
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IO(MAX) |
Short Circuit Current |
RL = 0 (Steady State) |
400 |
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mA |
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(Note 10) |
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en |
LP2987 Output Noise |
BW = 300 Hz to |
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Voltage (RMS) |
50 kHz, VOUT = 3.3V |
100 |
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COUT = 10 µF |
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LP2988 Output Noise |
BW = 300 Hz to |
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µV(RMS) |
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Voltage (RMS) |
50 kHz, VOUT = 3.3V |
20 |
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COUT = 10 µF |
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CBYPASS = .01 µF |
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Ripple Rejection |
f = 1 kHz, COUT = 10 µF |
65 |
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dB |
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CBYP = 0 (LP2988) |
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Output Voltage |
(Note 9) |
20 |
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ppm/ÊC |
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Temperature Coefficient |
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www.national.com |
6 |
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