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LP2992IM5-1.8 데이터시트 PDF
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PDF 형식의 LP2992IM5-1.8 자료 제공
| 부품번호 | LP2992IM5-1.8 기능 |
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| 기능 | Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designed for Use with Very Low ESR Output Capacitors | ||
| 제조업체 | National Semiconductor | ||
| 로고 |  |
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전체 15 페이지수
June 2002
LP2992
Micropower 250 mA Low-Noise Ultra Low-Dropout
Regulator in SOT-23 and LLP Packages
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2992 is a 250 mA, fixed-output voltage regulator
designed to provide ultra low-dropout and low noise in bat-
tery powered applications.
Using an optimized VIP™ (Vertically Integrated PNP) pro-
cess, the LP2992 delivers unequalled performance in all
specifications critical to battery-powered designs:
Dropout Voltage: Typically 450 mV @ 250 mA load, and
5 mV @ 1 mA load.
Ground Pin Current: Typically 1500 µA @ 250 mA load, and
75 µA @ 1 mA load.
Enhanced Stability: The LP2992 is stable with output ca-
pacitor ESR as low as 5 mΩ, which allows the use of ceramic
capacitors on the output.
Sleep Mode: Less than 1 µA quiescent current when
ON/OFF pin is pulled low.
Smallest Possible Size: SOT-23 and LLP packages use
absolute minimum board space.
Precision Output: 1% tolerance output voltages available
(A grade).
Low Noise: By adding a 10 nF bypass capacitor, output
noise can be reduced to 30 µV (typical).
Multiple voltage options, from 1.5V to 5.0V, are available as
standard products. Consult factory for custom voltages.
Features
n Ultra low dropout voltage
n Guaranteed 250 mA output current
n Smallest possible size (SOT-23, LLP package)
n Requires minimum external components
n Stable with low-ESR output capacitor
n <1 µA quiescent current when shut down
n Low ground pin current at all loads
n Output voltage accuracy 1% (A Grade)
n High peak current capability
n Wide supply voltage range (16V max)
n Low ZOUT: 0.3Ω typical (10 Hz to 1 MHz)
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
n Custom voltages available
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistant (PDA)
n Camcorder, Personal Stereo, Camera
Block Diagram
VIP™ is a trademark of National Semiconductor Corporation.
© 2002 National Semiconductor Corporation DS200294
20029401
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
Operating Junction Temperature
Range
Lead Temp. (Soldering, 5 sec.)
ESD Rating (Note 2)
Power Dissipation (Note 3)
−65˚C to +150˚C
−40˚C to +125˚C
260˚C
2 kV
Internally Limited
Input Supply Voltage (Survival)
Input Supply Voltage (Operating)
Shutdown Input Voltage (Survival)
Output Voltage (Survival, (Note 4))
IOUT (Survival)
Input-Output Voltage (Survival,
(Note 5))
−0.3V to +16V
2.2V to +16V
−0.3V to +16V
−0.3V to +9V
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, CIN = 1 µF, COUT = 4.7 µF, VON/OFF = 2V.
LP2992AI-X.X
LP2992I-X.X
Symbol
Parameter
Conditions
Typ (Note 6)
(Note 6)
Units
Min Max Min Max
∆VO
Output Voltage
IL = 1 mA
Tolerance
1 mA ≤ IL ≤ 50 mA
1 mA ≤ IL ≤ 250 mA
−1.0 1.0 −1.5 1.5
−1.5 1.5 −2.5 2.5
−2.5 2.5 −3.5 3.5 %VNOM
−3.5 3.5 −4.0 4.0
−4.5 4.5 −5.0 5.0
Output Voltage
VO(NOM)+1V ≤ VIN ≤ 16V
0.007
0.014
0.014
%/V
Line Regulation
0.032
0.032
VIN(min)
Minimum input voltage
required to maintain
2.05
2.20
2.20
V
outpout regulation
VIN– VO
Dropout Voltage
(Note 7)
IL = 0
0.5 2.5
4
2.5
4
IL = 1 mA
59 9
12 12
IL = 50 mA
100 125 125
mV
180 180
IL = 150 mA
260 325 325
470 470
IL = 250 mA
450 575 575
850 850
IGND
Ground Pin Current
IL = 0
65 95 95
125 125
IL = 1 mA
75 110 110
170 170
IL = 50 mA
IL = 150 mA
350 600 600
1000
1000
µA
850 1500 1500
2500
2500
VON/OFF
IL = 250 mA
ON/OFF Input Voltage
(Note 8)
VON/OFF < 0.3V
VON/OFF < 0.15V
High = O/P ON
Low = O/P OFF
1500
2300
2300
4000
4000
0.01
0.8
0.8
0.05
2
2
1.4 1.6
1.6
0.55
0.15
0.15
V
www.national.com
4
4페이지 
Typical Performance Characteristics Unless otherwise specified: CIN = 1µF, COUT = 4.7µF, VIN =
VOUT(NOM) +1, TA = 25˚C, ON/OFF pin is tied to VIN. (Continued)
Ripple Rejection
Ripple Rejection
Ripple Rejection
20029415
Ripple Rejection
20029416
Ripple Rejection
20029417
Ripple Rejection
20029418
20029419
7
20029423
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관련 데이터시트
| 부품번호 | 상세설명 및 기능 | 제조사 |
| LP2992IM5-1.5 | Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designed for Use with Very Low ESR Output Capacitors | National Semiconductor |
| LP2992IM5-1.5 | Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designed for Use with Very Low ESR Output Capacitors | National Semiconductor |
| DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |