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LP2985ITP-1.8 데이터시트 PDF




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부품번호 LP2985ITP-1.8 기능
기능 Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications
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LP2985ITP-1.8 데이터시트, 핀배열, 회로
May 2004
LP2985LV
Micropower 150 mA Low-Noise Low-Dropout Regulator
in SOT-23 and micro SMD packages for Applications
with Output Voltages 2.3V
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2985LV is a 150 mA, fixed-output voltage regulator
designed to providehigh performance and low noise in ap-
plications requiring output voltages < 2.3V.
Using an optimized VIP(Vertically Integrated PNP) pro-
cess, the LP2985LV delivers unequalled performance in all
specifications critical to battery-powered designs:
Ground Pin Current: Typically 825 µA @ 150 mA load, and
75 µA @ 1 mA load.
Enhanced Stability: The LP2985LV is stable with output
capacitor ESR as low as 5 m, 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: micro SMD package uses 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).
Features
n Guaranteed 150 mA output current
n Smallest possible size (micro SMD)
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: 0.3typical (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
VIPis a trademark of National Semiconductor Corporation.
© 2004 National Semiconductor Corporation DS101295
10129501
www.national.com




LP2985ITP-1.8 pdf, 반도체, 판매, 대치품
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 (Note 10)
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.
LP2985AI-X.X
LP2985I-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 150 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
−2.5 2.5 −3.0 3.0
−3.5 3.5 −4.0 4.0
Output Voltage
Line Regulation
VO(NOM)+1V VIN 16V 0.007
0.014
0.032
0.014
0.032
%/V
IGND
Ground Pin Current
IL = 0
IL = 1 mA
IL = 10 mA
IL = 50 mA
VIN(min)
VIN - VOUT
IL = 150 mA
Minimum Input Voltage
Required To maintain
Output Regulation
(Note 9)
Dropout Voltage
(Note 9)
VON/OFF < 0.3V
VON/OFF < 0.15V
IL = 50mA
IL = 150mA
VON/OFF
ION/OFF
en
ON/OFF Input Voltage
(Note 7)
ON/OFF Input Current
Output Noise
Voltage (RMS)
High = O/P ON
Low = O/P OFF
VON/OFF = 0
VON/OFF = 5V
BW = 300 Hz to 50 kHz,
COUT = 10 µF
CBYPASS = 10 nF
VOUT = 1.8V
65
75
120
300
825
0.01
0.05
2.05
95
125
110
170
220
400
500
900
1200
2000
0.8
2
2.20
95
125
110
170
220
400
500
900
1200
2000
0.8
2
2.20
µA
V
120 150 150
250 250
mV
280 350 350
600 600
1.4 1.6
1.6
0.55
0.15
0.15
V
0.01
5
−2
15
−2
µA
15
30 µV
www.national.com
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LP2985ITP-1.8 전자부품, 판매, 대치품
Typical Performance Characteristics Unless otherwise specified: CIN = 1µF, COUT = 4.7µF,
VIN = VOUT(NOM) +1, VOUT = 1.8V, TA = 25˚C, ON/OFF pin is tied to VIN (Continued)
Output Impedance vs Frequency
Output Impedance vs Frequency
Noise Density
10129527
Noise Density
10129532
10129533
Ground Pin vs Load Current
10129537
Minimum Input Voltage vs Temperature
10129513
7
10129509
www.national.com

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관련 데이터시트

부품번호상세설명 및 기능제조사
LP2985ITP-1.8

Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications

National Semiconductor
National Semiconductor
LP2985ITP-1.8

Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications

National Semiconductor
National Semiconductor

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