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LP2985IM5X-3.5 の電気的特性と機能

LP2985IM5X-3.5のメーカーはNational Semiconductorです、この部品の機能は「Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors」です。


製品の詳細 ( Datasheet PDF )

部品番号 LP2985IM5X-3.5
部品説明 Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors
メーカ National Semiconductor
ロゴ National Semiconductor ロゴ 




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LP2985IM5X-3.5 Datasheet, LP2985IM5X-3.5 PDF,ピン配置, 機能
March 2000
LP2985
Micropower 150 mA Low-Noise Ultra Low-Dropout
Regulator
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2985 is a 150 mA, fixed-output voltage regulator de-
signed to provide ultra low-dropout and low noise in battery
powered applications.
Using an optimized VIP(Vertically Integrated PNP) pro-
cess, the LP2985 delivers unequalled performance in all
specifications critical to battery-powered designs:
Dropout Voltage: Typically 300 mV @ 150 mA load, and
7 mV @ 1 mA load.
Ground Pin Current: Typically 850 µA @ 150 mA load, and
75 µA @ 1 mA load.
Enhanced Stability: The LP2985 is stable with output ca-
pacitor 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: SOT-23 and micro SMD 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 2.5V to 5.0V, are available as
standard products. Consult factory for custom voltages.
Features
n Ultra low dropout voltage
n Guaranteed 150 mA output current
n Smallest possible size (SOT-23, micro SMD 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: 0.3typical (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.
© 2000 National Semiconductor Corporation DS100140
DS100140-1
www.national.com

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LP2985IM5X-3.5 pdf, ピン配列
Ordering Information
TABLE 1. Package Marking and Ordering Information
Output Voltage
(V)
Grade
5-Lead Small Outline Package (M5)
2.5 A
2.5 A
2.5 STD
2.5 STD
2.7 A
2.7 A
2.7 STD
2.7 STD
2.8 A
2.8 A
2.8 STD
2.8 STD
2.9 A
2.9 A
2.9 STD
2.9 STD
3.0 A
3.0 A
3.0 STD
3.0 STD
3.1 A
3.1 A
3.1 STD
3.1 STD
3.2 A
3.2 A
3.2 STD
3.2 STD
3.3 A
3.3 A
3.3 STD
3.3 STD
3.5 A
3.5 A
3.5 STD
3.5 STD
3.6 A
3.6 A
3.6 STD
3.6 STD
3.8 A
3.8 A
3.8 STD
3.8 STD
4.0 A
Order Information
LP2985AIM5X-2.5
LP2985AIM5-2.5
LP2985IM5X-2.5
LP2985IM5-2.5
LP2985AIM5X-2.7
LP2985AIM5-2.7
LP2985IM5X-2.7
LP2985IM5-2.7
LP2985AIM5X-2.8
LP2985AIM5-2.8
LP2985IM5X-2.8
LP2985IM5-2.8
LP2985AIM5X-2.9
LP2985AIM5-2.9
LP2985IM5X-2.9
LP2985IM5-2.9
LP2985AIM5X-3.0
LP2985AIM5-3.0
LP2985IM5X-3.0
LP2985IM5-3.0
LP2985AIM5X-3.1
LP2985AIM5-3.1
LP2985IM5X-3.1
LP2985IM5-3.1
LP2985AIM5X-3.2
LP2985AIM5-3.2
LP2985IM5X-3.2
LP2985IM5-3.2
LP2985AIM5X-3.3
LP2985AIM5-3.3
LP2985IM5X-3.3
LP2985IM5-3.3
LP2985AIM5X-3.5
LP2985AIM5-3.5
LP2985IM5X-3.5
LP2985IM5-3.5
LP2985AIM5X-3.6
LP2985AIM5-3.6
LP2985IM5X-3.6
LP2985IM5-3.6
LP2985AIM5X-3.8
LP2985AIM5-3.8
LP2985IM5X-3.8
LP2985IM5-3.8
LP2985AIM5X-4.0
Package
Marking
LAUA
LAUA
LAUB
LAUB
LALA
LALA
LALB
LALB
L0KA
L0KA
L0KB
L0KB
LAXA
LAXA
LAXB
LAXB
L0OA
L0OA
L0OB
L0OB
L0PA
L0PA
L0PB
L0PB
L0QA
L0QA
L0QB
L0QB
L0RA
L0RA
L0RB
L0RB
LAIA
LAIA
LAIB
LAIB
L0SA
L0SA
L0SB
L0SB
L0YA
L0YA
L0YB
L0YB
L0TA
Supplied as:
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
3 www.national.com


3Pages


LP2985IM5X-3.5 電子部品, 半導体
Electrical Characteristics (Continued)
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
Ripple Rejection
f = 1 kHz, CBYPASS = 10 nF
COUT = 10 µF
45
dB
IO(SC)
Short Circuit Current
RL = 0 (Steady State)
(Note 9)
400
mA
IO(PK)
Peak Output Current VOUT Vo(NOM) −5%
350
mA
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
Note 2: The ESD rating of pins 3 and 4 is 1 kV.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal resistance, θJ-A, and
the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperture is calculated using:
Where the value of θJ-A for the SOT-23 package is 220˚C/W in a typical PC board mounting and the micro SMD package is 320˚C/W. Exceeding the maximum al-
lowable dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.
Note 4: If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2985 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the VIN to VOUT terminals that is normally reverse-biased. Reversing the polarity from VIN to VOUT will
turn on this diode.
Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential.
Note 8: The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 9: The LP2985 has foldback current limiting which allows a high peak current when VOUT > 0.5V, and then reduces the maximum output current as VOUT is
forced to ground (see Typical Performance Characteristics curves).
www.national.com
6

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共有リンク

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部品番号部品説明メーカ
LP2985IM5X-3.0

Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors

National Semiconductor
National Semiconductor
LP2985IM5X-3.0

Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors

National Semiconductor
National Semiconductor
LP2985IM5X-3.1

Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors

National Semiconductor
National Semiconductor
LP2985IM5X-3.1

Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors

National Semiconductor
National Semiconductor


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