Datasheet > UM1665

UM1665

更新时间： 2024-10-16 01:11:27

品牌	Logo	应用领域
英联电子 - UNIONSEMI		/
页数	文件大小	规格书
15页	461K
描述
Low Power DC/DC Boost Converter

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UM1665 数据手册

UM1665

Low Power DC/DC Boost Converter

UM1665S SOT23-5

UM1665DA TDFN6 3.0×3.0

General Description

The UM1665 is a PFM controlled step-up DC-DC converter with a switching frequency up to

1MHz. The device is ideal to generate output voltage for small to medium LCD bias supplies and

white LED backlight supplies from a single cell Li-ion battery. The part can also be used to

generate standard 3.3V/5V to 12V power conversions.

With a high switching frequency of 1MHz, a low profile and small board area solution can be

achieved using a chip coil and an ultra small ceramic output capacitor. The UM1665 has an

internal 400mA switch current limit, offering lower output voltage ripple. The low quiescent

current (typically 36µA) together with an optimized control scheme, allows device operation at

very high efficiencies over the entire load current range.

The UM1665 is available in SOT23-5 and TDFN6 3.0×3.0 with only 0.60mm (TYP) thickness

packages. The UM1665 is appropriate to be applied in small electronic equipments and wearable

devices.

Applications

Features



LCD Bias Supply

White LED Supply for LCD Backlights

Digital Still Cameras

PDAs, Organizers and Handheld PCs

Cellular Phones

Standard 3.3V/5V to 12V Conversion



2.0V to 6.0V Input Voltage Range

Adjustable Output Voltage up to 28V

400mA Internal Switch Current

Up to 1MHz Switching Frequency

36µA Typical No Load Quiescent Current

1µA Maximum Shutdown Current

Internal Soft-Start

Available in Tiny SOT23-5 and Thin DFN6

3.0×3.0 with 0.60mm (TYP) Thickness

Packages

Pin Configurations

Top View

GND

VIN

PHO

M: Month Code

UM1665S

SOT23-5

(Top View)

1665

VIN

GND

XX: Week Code

UM1665DA

TDFN6 3.0×3.0

________________________________________________________________________

http://www.union-ic.com Rev.05 Mar.2016 1/15

12 3 4 5 6 7...15

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与UM1665相关器件

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UM1750S-11	UNIONSEMI	获取价格	350mA, Micropower, Very Low Dropout Linear Regulator
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