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LP2987IMM-3.3 の電気的特性と機能
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LP2987IMM-3.3のメーカーはNational Semiconductorです、この部品の機能は「Micropower/ 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)」です。 |
製品の詳細 ( Datasheet PDF )
| 部品番号 | LP2987IMM-3.3 |
| |
| 部品説明 | Micropower/ 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) | ||
| メーカ | National Semiconductor | ||
| ロゴ |  |
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このページの下部にプレビューとLP2987IMM-3.3ダウンロード（pdfファイル）リンクがあります。 Total 19 pages
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 volt-
age regulators with power-ON reset delay which can be
implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical appli-
cations. A single external capacitor connected to the Bypass
pin reduces regulator output noise.
Using an optimized VIP™ (Vertically Integrated PNP) pro-
cess, 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 pro-
vides 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%
(“A” grade) and 1% (standard grade) at room temperature.
Features
n Ultra low dropout voltage
n Power-ON reset delay requires only one component
n Bypass pin for reduced output noise (LP2988)
n Guaranteed continuous output current 200 mA
n Guaranteed peak output current > 250 mA
n SO-8 and mini SO-8 surface mount packages
n <2 µA quiescent current when shutdown
n Low ground pin current at all loads
n 0.5% output voltage accuracy (“A” grade)
n Wide supply voltage range (16V max)
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Camcorder, Personal Stereo, Camera
Block Diagrams
DS100017-1
VIP™ is a trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS100017
DS100017-2
www.national.com
1 Page  
Ordering Information (LP2987) (Continued)
TABLE 1. Package Marking and Ordering Information (Continued)
Output Voltage
3.3
3.3
3.2
3.2
3.2
3.2
3.0
3.0
3.0
3.0
2.8
2.8
2.8
2.8
Grade
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
Order Information
LP2987IMX-3.3
LP2987IM-3.3
LP2987AIMX-3.2
LP2987AIM-3.2
LP2987IMX-3.2
LP2987AIM-3.2
LP2987IMX-3.0
LP2987AIM-3.0
LP2987IMX-3.0
LP2987IM-3.0
LP2987AIMX-2.8
LP2987AIM-2.8
LP2987IMX-2.8
LP298AIM-2.8
Package Marking
2987IM3.3
2987IM3.3
2987AIM3.2
2987AIM3.2
2987IM3.2
2987IM3.2
2987AIM3.0
2987AIM3.0
2987IM3.0
2987IM3.0
2987AIM2.8
2987AIM2.8
2987IM2.8
298AIM2.8
Supplied as:
2.5k Units on Tape and Reel
Shipped in Anti-Static Rails
2.5k Units on Tape and Reel
Shipped in Anti-Static Rails
2.5k Units on Tape and Reel
Shipped in Anti-Static Rails
2.5k Units on Tape and Reel
Shipped in Anti-Static Rails
2.5 Units on Tape and Reel
Shipped in Anti-Static Rails
2.5 Units on Tape and Reel
Shipped in Anti-Static Rails
2.5 Units on Tape and Reel
Shipped in Anti-Static Rails
3 www.national.com
3Pages 
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 seconds)
ESD Rating (Note 2)
Power Dissipation (Note 3)
Input Supply Voltage
(Survival)
−65˚C to +150˚C
−40˚C to +125˚C
260˚C
2 kV
Internally Limited
−0.3V to +16V
Input Supply Voltage
(Operating)
Shutdown Pin
Sense Pin
Output Voltage
(Survival) (Note 4)
IOUT (Survival)
Input-Output Voltage
(Survival) (Note 5)
2.1V to +16V
−0.3V to +16V
−0.3V to +6V
−0.3V to +16V
Short Circuit Protected
−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. Un-
less otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 4.7 µF, CIN = 2.2 µF, VS/D = 2V.
Symbol
Parameter
Conditions
Typical
LM2987/8AI-X.X
(Note 6)
Min Max
LM2987/8I-X.X
(Note 6)
Min Max
Units
∆VO Output Voltage
Tolerance
0.1 mA < IL < 200 mA
−0.5 0.5 −1.0 1.0
−0.8 0.8 −1.6 1.6 %VNOM
−1.8 1.8 −2.8 2.8
Output Voltage Line
Regulation
VO(NOM) + 1V ≤ VIN ≤
16V
0.007
0.014
0.032
0.014
0.032
%/V
VIN– VO
Dropout Voltage
(Note 7)
IL = 100 µA
2.0 2.0
1
3.5 3.5
IL = 75 mA
120 120
90 mV
170 170
IL = 200 mA 180 230 230
350 350
IGND
Ground Pin Current
IL = 100 µA
IL = 75 mA
120 120
100
150 150
µA
800 800
500
1400
1400
IL = 200 mA 1 2.1 2.1
3.7 3.7
VS/D < 0.3V
0.05
1.5
1.5
IO(PK)
Peak Output Current
VOUT ≥ VO(NOM) − 5%
400
250
250
IO(MAX)
Short Circuit Current
RL = 0 (Steady State)
(Note 10)
400
mA
µA
mA
en
LP2987 Output Noise
BW = 300 Hz to
Voltage (RMS)
50 kHz, VOUT = 3.3V
100
COUT = 10 µF
LP2988 Output Noise
BW = 300 Hz to
Voltage (RMS)
50 kHz, VOUT = 3.3V
COUT = 10 µF
CBYPASS = .01 µF
20
Ripple Rejection
f = 1 kHz, COUT = 10 µF
CBYP = 0 (LP2988)
65
µV(RMS)
dB
Output Voltage
(Note 9)
Temperature Coefficient
20
ppm/˚C
www.national.com
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| ページ | 合計 : 19 ページ | ||
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PDF ダウンロード | [ LP2987IMM-3.3 データシート.PDF ] | |
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データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
共有リンク
Link :| 部品番号 | 部品説明 | メーカ |
| LP2987IMM-3.0 | Micropower/ 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) | National Semiconductor |
| LP2987IMM-3.0 | Micropower/ 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) | National Semiconductor |
| LP2987IMM-3.2 | Micropower/ 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) | National Semiconductor |
| LP2987IMM-3.2 | Micropower/ 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) | National Semiconductor |