Datasheet > TPS628511

TPS628511

更新时间： 2024-11-24 02:50:15

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
36页	3042K
描述
TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package

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中文翻译

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数据手册

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TPS628511 数据手册

TPS628510, TPS628511, TPS628512

www.ti.com

SLUSDO4 – AUGUST 2020

TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package

1 Features

3 Description

•

T_J= –40°C to +150°C

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A,

and 2-A high efficiency, easy-to-use, synchronous

step-down DC/DC converters. They are based on a

peak current mode control topology. Low resistive

switches allow up to 2-A continuous output current at

high ambient temperature. The switching frequency is

internally fixed at 2.25 MHz and can also be

synchronized to an external clock in the range from

1.8 MHz to 4 MHz. In PWM/PFM mode, the

TPS62851x automatically enters Power Save Mode at

light loads to maintain high efficiency across the

whole load range. The TPS62851x provide a 1%

output voltage accuracy in PWM mode which helps

design a power supply with high output voltage

accuracy. The SS/TR pin allows setting the start-up

time or forming tracking of the output voltage to an

external source. This allows external sequencing of

different supply rails and limits the inrush current

during start-up.

Input voltage range: 2.7 V to 6 V

Quiescent current 15 µA typical

Output voltage from 0.6 V to 5.5 V

Output voltage accuracy ±1% (PWM operation)

Adjustable soft start-up to 10 ms

Forced PWM or PWM/PFM operation

Switching frequency in PWM: 2.25 MHz

Switching Frequency external sync (1.8 MHz to 4

MHz)

Precise ENABLE input allows:

– User-defined undervoltage lockout

– Exact sequencing

100% Duty cycle mode

Active output discharge

•

Spread spectrum clocking - optional

Foldback overcurrent protection - optional

Power-good output with window comparator

The TPS62851x are available in a SOT583 package.

2 Applications

Device Information

PART NUMBER

PACKAGE⁽¹⁾

BODY SIZE (NOM)

•

Motor drives

Factory automation and control

Building automation

Test and measurement

Multi-function printer (MFP)

General purpose POL

2.1 mm x 1.6 mm

(incl pins)

TPS628510

SOT583

2.1 mm x 1.6 mm

(incl pins)

TPS628511

TPS628512

SOT583

2.1 mm x 1.6 mm

(incl pins)

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

100

TPS62851x

0.47mH

V_OUT

2.7 V - 6 V

VIN

C_IN

2*10 mF

0603

R ₁

C_FF

C_OUT

2*10 mF

0603

MODE/SYNC

R₂

R₃

SS/TR

V_IN= 4.0 V

V_IN= 5.0 V

V_IN= 6.0 V

GND

Simplified Schematic

0.5

Output Current (A)

1.5

D002

Efficiency versus I_OUT, V_OUT= 3.3 V

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

Submit Document Feedback

without notice.

Product Folder Links: TPS628510 TPS628511 TPS628512

12 3 4 5 6 7...36

中文翻译

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与TPS628511相关器件

型号	品牌	获取价格	描述	数据表
TPS628511DRLR	TI	获取价格	TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package
TPS628512	TI	获取价格	TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package
TPS628512DRLR	TI	获取价格	TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package
TPS628513	TI	获取价格	采用 SOT-583 封装的 2.7V 至 6V、3A 固定频率降压转换器
TPS628513DRLR	TI	获取价格	采用 SOT-583 封装的 2.7V 至 6V、3A 固定频率降压转换器 \| DRL \|
TPS62851X	TI	获取价格	TPS62851x 2.7-V to 6-V, 0.5-A / 1-A / 2-A Step-Down Converter in SOT583 Package
TPS62860	TI	获取价格	1.8-V to 5.5-V Input, 0.6-/1-A Synchronous Step-Down Converter with I2C/VSEL Interface
TPS628600	TI	获取价格	1.8-V to 5.5-V Input, 0.6-/1-A Synchronous Step-Down Converter with I2C/VSEL Interface
TPS628600YCHR	TI	获取价格	1.8-V to 5.5-V Input, 0.6-/1-A Synchronous Step-Down Converter with I2C/VSEL Interface
TPS628601YCHR	TI	获取价格	1.8-V to 5.5-V Input, 0.6-/1-A Synchronous Step-Down Converter with I2C/VSEL Interface

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