Datasheet Linear Technology LTC3251EMSE-1.2#PBF — 数据表

制造商	Linear Technology
系列	LTC3251
零件号	LTC3251EMSE-1.2#PBF

500mA高效，低噪声，无电感降压型DC / DC转换器

数据表

PDF, 383 Kb, 修订版: B, 文件上传: Sep 27, 2017

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价格

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Package	MS-10E
Package Code	MSE
Package Index	05-08-1664

参数化

Demo Boards	DC506A
Design Tools	LTspice Model
Export Control	no
Frequency	1600 kHz
Function	Regulated Step-Down Charge Pump
Ishutdown	1 µA
Isupply	0.009 mA
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	0.5 A
Output Voltage	1.2V, 1.5V, Adj
Vin Max	5.5 V
Vin Min	2.7 V

生态计划

RoHS

Compliant

设计须知

下载
New Step-Down Charge Pumps are Tiny, Efficient and Very Low Noise &mdash DN310
PDF, 126 Kb, 档案已发布: May 1, 2003
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Step-Down Charge Pumps Are Tiny, Efficient
and Very Low Noise вЂ“ Design Note 310
William Walter
Introduction
Inductorless charge pump DC/DC converters are popular
in space-constrained applications with 10mA to 500mA
load currents. Such converters are available in small
packages, operate with very low quiescent current and
require minimal external components. However, the
downside for most charge pumps is noise. Noise that
is generated at the power input can interfere with RF
transmission and reception in wireless applications, and
noise at the output can couple into sensitive circuits
or even create audible noise. The new LTCВ®3250 and
LTC3251 step-down charge pumps solve this problem
with a new switching architecture that mitigates noise
without sacriп¬Ѓcing any of the space saving, high efп¬Ѓciency beneп¬Ѓts typical of charge pump converters.
The LTC3250-1.5 is optimized for applications that require up to 250mA of current from a п¬Ѓxed 1.5V output,
and where space is at an absolute premium. The LTC3251
provides more п¬‚exibility in a slightly larger footprint:
it features an adjustable output voltage (0.9V to 1.6V),
up to 500mA output, ultralow input and output noise
and spread spectrum operation. Both ICs use 2-to-1 …

模型线

系列: LTC3251 (6)

LTC3251EMSE#PBF LTC3251EMSE#TRPBF LTC3251EMSE-1.2#PBF LTC3251EMSE-1.2#TRPBF LTC3251EMSE-1.5#PBF LTC3251EMSE-1.5#TRPBF

制造商分类

Power Management > Inductorless (Charge Pump) DC/DC Converters > Regulated Step-Down Charge Pumps

其他名称:

LTC3251EMSE-1.2PBF, LTC3251EMSE-1.2 PBF, LTC3251EMSE1.2#PBF, LTC3251EMSE 1.2#PBF

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