LP38690DT-1.8/NOPB National Semiconductor, LP38690DT-1.8/NOPB Datasheet

LP38690DT-1.8/NOPB

Manufacturer Part Number

LP38690DT-1.8/NOPB

Description

IC REG LDO 1A 1.8V TO-252

Manufacturer

National Semiconductor

Series

PowerWise®r

Datasheet

1.LP38690SD-3.3NOPB.pdf (16 pages)

Specifications of LP38690DT-1.8/NOPB

Regulator Topology

Positive Fixed

Voltage - Output

1.8V

Voltage - Input

Up to 10V

Voltage - Dropout (typical)

0.95V @ 1A

Number Of Regulators

Current - Output

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

TO-252-2, DPak (2 Leads + Tab), TO-252AA, SC-63

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Other names

*LP38690DT-1.8
*LP38690DT-1.8/NOPB
LP38690DT-1.8

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LP38690DT-1.8/NOPB

Manufacturer:

TI/德州仪器

Quantity:

20 000

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Download datasheet (377Kb)

LP38690/LP38692

1A Low Dropout CMOS Linear Regulators

Stable with Ceramic Output Capacitors

General Description

The LP38690/2 low dropout CMOS linear regulators provide

tight output tolerance (2.5% typical), extremely low dropout

voltage (450mV @ 1A load current, V

AC performance utilizing ultra low ESR ceramic output ca-

pacitors.

The low thermal resistance of the LLP, SOT-223 and T0-252

packages allow the full operating current to be used even in

high ambient temperature environments.

The use of a PMOS power transistor means that no DC base

drive current is required to bias it allowing ground pin current

to remain below 100 µA regardless of load current, input volt-

age, or operating temperature.

Dropout Voltage: 450 mV (typ) @ 1A (typ. 5V out).

Ground Pin Current: 55 µA (typ) at full load.

Precision Output Voltage: 2.5% (25°C) accuracy.

Typical Application Circuits

Note: * Minimum value required for stability.

**LLP package devices only.

OUT

= 5V), and excellent

201266

Features

■

Applications

■

2.5% output accuracy (25°C)

Low dropout voltage: 450mV @ 1A (typ, 5V out)

Wide input voltage range (2.7V to 10V)

Precision (trimmed) bandgap reference

Guaranteed specs for -40°C to +125°C

1µA off-state quiescent current

Thermal overload protection

Foldback current limiting

T0-252, SOT-223 and 6-Lead LLP packages

Enable pin (LP38692)

Hard Disk Drives

Notebook Computers

Battery Powered Devices

Portable Instrumentation

20126601

20126602

October 24, 2008

www.national.com

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