Datasheet Linear Technology LTC3200EMS8#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3200
Artikelnummer	LTC3200EMS8#PBF

Geräuscharme DC / DC-Wandler mit geregelter Ladungspumpe

Datenblätter

PDF, 184 Kb, Datei hochgeladen: Sep 27, 2017

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Preise

Verpackung

Package	MS-8
Package Code	MS8
Package Index	05-08-1660

Parameter

Demo Boards	DC366A
Design Tools	LTspice Model
Export Control	no
Frequency	2000 kHz
Ishutdown	1 µA
Isupply	3.5 mA
Max Number of LEDs	6 (parallel)
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	0.1 A
Synchronous	no
Topology	Charge Pump, LED Driver
Vin Max	4.5 V
Vin Min	2.7 V
Vout Max	5 V

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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New Charge Pumps Offer Low Input and Output Noise &mdash DN243
PDF, 94 Kb, Datei veröffentlicht: Nov 1, 2001
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New Charge Pumps Offer Low Input and Output Noise
Design Note 243
Sam Nork
Charge pump (inductorless) DC/DC converters are
quite popular in space-constrained applications where
low to moderate load currents must be supplied. Such
converters are available in small packages, operate
with very low quiescent current and require minimal
external components. However, noise generation is
one undesirable characteristic of most charge pumps.
Unwanted noise can create a variety of problems.
Noise generated at the power input can interfere with
RF transmission and reception in wireless applications.
Noise at the output can couple onto sensitive circuits
or even create audible noise. The new LTC В®3200 family
of boost charge pumps employs a new architecture
designed to minimize noise at the input and output to
mitigate such unwanted behavior.
Burst ModeВ® Operation vs Constant Frequency
Most regulating charge pump DC/DC converters operate using a Burst Mode architecture. Such regulator
architectures provide the lowest quiescent current,
but generate the highest levels of both input and output noise. With Burst Mode parts, the charge pump
switches are either delivering maximum current to …

Artikel

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Charge Pump Powers White LEDs &mdash LT Journal
PDF, 247 Kb, Datei veröffentlicht: Feb 1, 2001
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DESIGN IDEAS Charge Pump Powers White LEDs
by Steven Martin
Introduction
Most of todayвЂ™s portable equipment
uses a liquid crystal display to convey
information to its user. Until recently,
those displays have been monochrome
and have used a low voltage light
emitting diode (LED) such as red or
green for backlighting. With the advent
of color liquid crystal displays, a white
backlight source is needed. Recently,
a revolution in LED technology has
lead to the long-coveted white LED.
However, white LEDs, which are
actually blue LEDs with a special
phosphor in the lens, operate at a
considerably higher voltage than red
or green LEDs. White LEDs can
require anywhere from 3.5V to 3.9V
to operate at 15mA. In battery powered systems, itвЂ™s impractical to drive
the LEDs directly from the battery
and still control the LED current. To …

Modellreihe

Serie: LTC3200 (5)

LTC3200EMS8#PBF LTC3200EMS8#TRPBF LTC3200ES6-5#PBF LTC3200ES6-5#TRMPBF LTC3200ES6-5#TRPBF

Herstellerklassifikation

Power Management > Inductorless (Charge Pump) DC/DC Converters > Regulated Step-Up Charge Pumps | Inductorless (Charge Pump) LED Drivers

Andere Namen:

LTC3200EMS8PBF, LTC3200EMS8 PBF

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