LP2985IM5-4.8 - Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed

부품번호

LP2985IM5-4.8 기능

기능

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

제조업체

National Semiconductor

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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 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 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: 0.3Ω 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.

DS100140-1

www.national.com

Ordering Information (Continued)

TABLE 1. Package Marking and Ordering Information (Continued)

Output Voltage

(V)

Grade

Order Information

5-Lead Small Outline Package (M5)

4.0 A LP2985AIM5-4.0

4.0

STD

LP2985IM5X-4.0

4.0

STD

LP2985IM5-4.0

4.7 A LP2985AIM5X-4.7

4.7 A LP2985AIM5-4.7

4.7

STD

LP2985IM5X-4.7

4.7

STD

LP2985IM5-4.7

4.8 A LP2985AIM5X-4.8

4.8 A LP2985AIM5-4.8

4.8

STD

LP2985IM5X-4.8

4.8

STD

LP2985IM5-4.8

5.0 A LP2985AIM5X-5.0

5.0 A LP2985AIM5-5.0

5.0

STD

LP2985IM5X-5.0

5.0

STD

LP2985IM5-5.0

micro SMD, 5 Bump Package (BPA05)

2.5 A LP2985AIBP-2.5

2.5 A LP2985AIBPX-2.5

2.5

STD

LP2985IBP-2.5

2.5

STD

LP2985IBPX-2.5

2.8 A LP2985AIBP-2.8

2.8 A LP2985AIBPX-2.8

2.8

STD

LP2985IBP-2.8

2.8

STD

LP2985IBPX-2.8

3.3 A LP2985AIBP-3.3

3.3 A LP2985AIBPX-3.3

3.3

STD

LP2985IBPX-3.3

3.3

STD

LP2985IBPX-3.3

Package

Marking

L0TA

L0TB

LAJA

LAJB

LAKA

LAKB

L0UA

L0UB

Supplied as:

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

250 Units on Tape and Reel

3000 Units on Tape and Reel

250 Units on Tape and Reel

3000 Units on Tape and Reel

250 Units on Tape and Reel

3000 Units on Tape and Reel

250 Units on Tape and Reel

3000 Units on Tape and Reel

250 Units on Tape and Reel

3000 Units on Tape and Reel

250 Units on Tape and Reel

3000 Units on Tape and Reel

www.national.com

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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.

VOUT vs Temperature

Short-Circuit Current

DS100140-8

DS100140-9

Short Circuit Current vs Output Voltage

Ripple Rejection

DS100140-10

Ripple Rejection

DS100140-11

DS100140-13

DS100140-14

www.national.com

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관련 데이터시트

부품번호	상세설명 및 기능	제조사
LP2985IM5-4.0	Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors	National Semiconductor
LP2985IM5-4.0	Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors	National Semiconductor