TPS7A45

更新时间： 2024-10-05 11:06:31

品牌	Logo	应用领域
德州仪器 - TI		电源电路线性稳压器IC
页数	文件大小	规格书
25页	816K
描述
具有反向电流保护和使能功能的 1.5A、20V 超低压降稳压器

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TPS7A45 数据手册

TPS7A45xx

www.ti.com ........................................................................................................................................................ SLVS720A–JUNE 2008–REVISED AUGUST 2008

LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS

FEATURES

DESCRIPTION

•

Optimized for Fast Transient Response

Output Current: 1.5 A

The TPS7A45xx devices are low-dropout (LDO)

regulators optimized for fast transient response. The

device can supply 1.5 A of output current with a

dropout voltage of 300 mV. Operating quiescent

current is 1 mA, dropping to less than 1 µA in

shutdown. Quiescent current is well controlled; it does

not rise in dropout, as with many other regulators. In

addition to fast transient response, the TPS7A45xx

regulators have very low output noise, which makes

them ideal for sensitive RF supply applications.

High Output Voltage Accuracy : 1% at 25°C

Dropout Voltage: 300 mV

Low Noise: 35 µV_RMS(10 Hz to 100 kHz)

High Ripple Rejection: 68 dB

1-mA Quiescent Current

No Protection Diodes Needed

Controlled Quiescent Current in Dropout

Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V

Adjustable Output from 1.21 V to 20 V

Output voltage range is from 1.21 V to 20 V. The

TPS7A45xx regulators are stable with output

capacitors as low as 10 µF. Small ceramic capacitors

can be used without the necessary addition of ESR,

as is common with other regulators. Internal

Less Than 1-µA Quiescent Current in

Shutdown

•

Stable with 10-µF Output Capacitor

Stable with Ceramic Capacitors

Reverse-Battery Protection

No Reverse Current

protection

circuitry

includes

reverse-battery

protection, current limiting, thermal limiting, and

reverse-current protection. The devices are available

in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V,

and as an adjustable device with a 1.21-V reference

voltage. The TPS7A45xx regulators are available in

the 5-pin TO-263 (KTT) package.

Thermal Limiting

APPLICATIONS

KTT PACKAGE

(TOP VIEW)

•

3.3-V to 2.5-V Logic Power Supplies

Post Regulator for Switching Supplies

Wireless Infrastructure

SENSE/ADJ

OUT

Radio-Frequency Systems

GND

SHDN

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.

PowerPAD, PowerFLEX are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...25

中文翻译

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与TPS7A45相关器件

型号	品牌	获取价格	描述	数据表
TPS7A4501	TI	获取价格	LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS
TPS7A4501DCQR	TI	获取价格	LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS
TPS7A4501DCQT	TI	获取价格	LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS
TPS7A4501HKU/EM	TI	获取价格	Low-Dropout Voltage Regulator
TPS7A4501KTTR	TI	获取价格	LOW-NOISE FAST-TRANSIENT-RESPONSE 1.5-A LDO VOLTAGE REGULATORS
TPS7A4501KTTT	TI	获取价格	1.21 V-20V ADJUSTABLE POSITIVE LDO REGULATOR, 0.45V DROPOUT, PSSO5, PLASTIC, TO-263, D2PAK
TPS7A4501-SP	TI	获取价格	Low-Dropout Voltage Regulator
TPS7A4501-SP_15	TI	获取价格	Low-Dropout Voltage Regulator
TPS7A4501U/EM	TI	获取价格	Low-Dropout Voltage Regulator
TPS7A4501Y/EM	TI	获取价格	耐辐射加固保障 (RHA)、1.5V 至 20V 输入、1.5A、可调节低压降 (LDO)

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