Datasheet Linear Technology LTC3251EMSE#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3251
Artikelnummer	LTC3251EMSE#PBF

500 mA hocheffiziente, rauscharme, induktorlose Abwärts-DC / DC-Wandler

Datenblätter

PDF, 383 Kb, Revision: B, Datei hochgeladen: Sep 27, 2017

Auszug aus dem Dokument

Preise

Verpackung

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

Parameter

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

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

Herunterladen
New Step-Down Charge Pumps are Tiny, Efficient and Very Low Noise &mdash DN310
PDF, 126 Kb, Datei veröffentlicht: May 1, 2003
Auszug aus dem Dokument
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 …

Modellreihe

Serie: LTC3251 (6)

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

Herstellerklassifikation

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

Andere Namen:

LTC3251EMSEPBF, LTC3251EMSE PBF

Kontakte