TPS7248

更新时间： 2024-11-04 22:52:51

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
36页	622K
描述
MICROPOWER LOW-DROPOUT LDO VOLTAGE REGULATORS

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TPS7248 数据手册

TPS7201Q, TPS7225Q, TPS7228Q, TPS7230Q

TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY

MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS

SLVS102F – MARCH 1995 – REVISED NOVEMBER 1998

D, P, OR PW PACKAGE

(TOP VIEW)

Available in 5-V, 4.85-V, 3.3-V, 3.0-V, 2.75-V ,

and 2.5-V Fixed-Output and Adjustable

Versions

†

‡

SENSE /FB

RESET/PG

GND

OUT

Dropout Voltage <85 mV Max at

= 100 mA (TPS7250)

Low Quiescent Current, Independent of

Load, 180 µA Typ

†

‡

SENSE

–

Fixed voltage options only

8-Pin SOIC and 8-Pin TSSOP Package

(TPS7225, TPS7228 , TPS7230, TPS7233,

TPS7248, and TPS7250)

Output Regulated to ±2% Over Full

Operating Range for Fixed-Output Versions

FB – Adjustable version only (TPS7201)

Extremely Low Sleep-State Current,

0.5 µA Max

600

= 25°C

Power-Good (PG) Status Output

500

description

TPS7225

The TPS72xx family of low-dropout (LDO) voltage

regulators offers the benefits of low-dropout

voltage, micropower operation, and miniaturized

packaging. These regulators feature extremely

low dropout voltages and quiescent currents

compared to conventional LDO regulators.

Offered in small-outline integrated-circuit (SOIC)

packages and 8-terminal thin shrink small-outline

(TSSOP), the TPS72xx series devices are ideal

for cost-sensitive designs and for designs where

board space is at a premium.

400

300

200

100

TPS7230

TPS7233

TPS7248

TPS7250

150

A combination of new circuit design and process

innovation has enabled the usual pnp pass

transistor to be replaced by a PMOS device.

Because the PMOS pass element behaves as a

low-value resistor, the dropout voltage is very low

– maximum of 85 mV at 100 mA of load current

(TPS7250) – and is directly proportional to the

load current (see Figure 1). Since the PMOS pass

100

200

250

– Output Current – mA

Figure 1. Typical Dropout Voltage Versus

Output Current

element is a voltage-driven device, the quiescent current is very low (300 µA maximum) and is stable over the

entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and

cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system

battery operating life.

The TPS72xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current

to 0.5 µA maximum at T = 25°C. Other features include a power-good function that reports low output voltage

and may be used to implement a power-on reset or a low-battery indicator.

The TPS72xx is offered in 2.5-V, 2.75-V , 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable

version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum

of 2% over line, load, and temperature ranges (3% for adjustable version).

This device is in the product preview stage of development. Please contact the local TI sales office for availability.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

This document contains information on products in more than one phase

of development. The status of each device is indicated on the page(s)

specifying its electrical characteristics.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...36

中文翻译

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与TPS7248相关器件

型号	品牌	获取价格	描述	数据表
TPS7248Q	TI	获取价格	MICROPOWER LOW-DROPOUT LDO VOLTAGE REGULATORS
TPS7248Q/Y	ETC	获取价格
TPS7248QD	TI	获取价格	MICROPOWER LOW-DROPOUT LDO VOLTAGE REGULATORS
TPS7248QDG4	TI	获取价格	MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
TPS7248QDR	TI	获取价格	MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
TPS7248QDRG4	TI	获取价格	MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
TPS7248QP	TI	获取价格	MICROPOWER LOW-DROPOUT LDO VOLTAGE REGULATORS
TPS7248QPE4	TI	获取价格	MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
TPS7248QPW	TI	获取价格	MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
TPS7248QPWG4	TI	获取价格	MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS

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