Datasheet > TLV6256x

TLV6256x

更新时间： 2024-09-22 00:57:47

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德州仪器 - TI		/
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TLV6256x 1.5-A High Efficiency Step-Down Converters in SOT-23 5-Pin Package

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TLV62565, TLV62566

SLVSBC1C –OCTOBER 2013–REVISED JULY 2015

TLV6256x 1.5-A High Efficiency Step-Down Converters in SOT-23 5-Pin Package

1 Features

3 Description

The TLV62565/6 devices are synchronous step-down

converters optimized for small solution size and high

efficiency. The devices integrate switches capable of

delivering an output current up to 1.5 A.

•

2.7-V to 5.5-V Input Voltage Range

1.5-MHz Typical Switching Frequency

Output Current up to 1.5 A (Max)

Adaptive On-Time Current Control

Power Save Mode for Light Load Efficiency

50-µA Operating Quiescent Current

Up to 95% Efficiency

•

The devices are based on an adaptive on time with

valley current mode control scheme. Typical

operating frequency is 1.5 MHz at medium to heavy

loads. The devices are optimized to achieve very low

output voltage ripple even with small external

components and feature an excellent load transient

response.

Over Current Protection

95% Maximum Duty Cycle

Excellent AC and Transient Load Response

Power Good Output, TLV62566

Internal Soft Startup of 250 µs (Typ)

Adjustable Output Voltage

During a light load, the TLV62565/6 automatically

enter into Power Save Mode at the lowest quiescent

current (50 μA typ) to maintain high efficiency over

the entire load current range. In shutdown, the

current consumption is reduced to less than 1 μA.

Thermal Shutdown Protection

The TLV62565/6 provide an adjustable output voltage

via an external resistor divider. The output voltage

start-up ramp is controlled by an internal soft start,

typically 250 µs. Power sequencing is possible by

configuring the Enable (TLV62565) and Power Good

(TLV62566) pins. Other features like over current

protection and over temperature protection are built-

in. The TLV62565/6 devices are available in a SOT-

23 5-pin package.

Available in SOT-23 5-Pin Package

2 Applications

•

Portable Devices

DSL Modems

Hard Disk Drivers

Set Top Box

Tablet

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TLV62565,

TLV62566

SOT-23 (5)

2.90 mm × 1.60 mm

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

the end of the datasheet.

4 Simplified Schematic

2.2µH

V_OUT

1.8V

V_IN

Efficiency vs Load Current

VIN

2.7V to 5.5V

4.7µF

240k

10µF

100

V_OUT=1. 8V

GND

120k

TLV62565

Vin=2.7V

V_IN=2.7V

=3.6V

Vin=3.6V

=5.5V

Vin=5.5V

10µ

100µ

10m

100m

C001

Load current [A]

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. PRODUCTION DATA.

12 3 4 5 6 7...27

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与TLV6256x相关器件

型号	品牌	获取价格	描述	数据表
TLV62585	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62585DRLR	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62585DRLT	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62585PDRLR	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62585PDRLT	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62585RWTR	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62585RWTT	TI	获取价格	采用 2x2 QFN 或 SOT563 封装的 2.5V-5.5V 输入、3A 高效降压转
TLV62595	TI	获取价格	采用 1.5mm x 1.5mm QFN 封装、具有 1% 输出精度的 2.5V 至 5.
TLV62595DMQR	TI	获取价格	采用 1.5mm x 1.5mm QFN 封装、具有 1% 输出精度的 2.5V 至 5.
TLV627432	TI	获取价格	具有超低静态电流的 2.15V 至 5.5V、400mA 高效降压转换器

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