LP298AIM-2.8 Datasheet

IC型號：
LP298AIM-2.8
PDF描述：
Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with ...
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516.16KB
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19頁
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NSC

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LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable

Power-On Reset Delay

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

鈩?/div>

(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 碌A(chǔ)

10 mA load (typical).

Sleep Mode:

The LP2987/8 draws less than 2 碌A(chǔ) 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%

(鈥淎鈥?grade) and 1% (standard grade) at room temperature.

Features

Ultra low dropout voltage

Power-ON reset delay requires only one component

Bypass pin for reduced output noise (LP2988)

Guaranteed continuous output current 200 mA

Guaranteed peak output current

250 mA

SO-8 and mini SO-8 surface mount packages

2 碌A(chǔ) quiescent current when shutdown

Low ground pin current at all loads

0.5% output voltage accuracy (鈥淎鈥?grade)

Wide supply voltage range (16V max)

Overtemperature/overcurrent protection

鈭?0藲C to +125藲C junction temperature range

Applications

Cellular Phone

Palmtop/Laptop Computer

Camcorder, Personal Stereo, Camera

Block Diagrams

DS100017-1

DS100017-2

VIP

鈩?/div>

is a trademark of National Semiconductor Corporation.

漏 1999 National Semiconductor Corporation

DS100017

www.national.com

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