Datasheet Linear Technology LTC3202 — Datenblatt

Hersteller	Linear Technology
Serie	LTC3202

Geräuscharme, hocheffiziente Ladepumpe für weiße LEDs

Datenblätter

PDF, 260 Kb, Revision: A, Datei hochgeladen: Sep 27, 2017

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Preise

Verpackung

	LTC3202EDD#PBF	LTC3202EDD#TRPBF	LTC3202EMS#PBF	LTC3202EMS#TRPBF
N	1	2	3	4
Package	3x3 DFN-10 Paketumrisszeichnung	3x3 DFN-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung	MS-10 Paketumrisszeichnung
Package Code	DD	DD	MS	MS
Package Index	05-08-1699	05-08-1699	05-08-1661	05-08-1661
Pin Count	10	10	10	10

Parameter

Parameters / Models	LTC3202EDD#PBF	LTC3202EDD#TRPBF	LTC3202EMS#PBF	LTC3202EMS#TRPBF
Demo Boards	DC395A,DC633A	DC395A,DC633A	DC395A,DC633A	DC395A,DC633A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no
Frequency, kHz	1500	1500	1500	1500
Ishutdown, µA	1	1	1	1
Isupply, mA	2.5	2.5	2.5	2.5
Max Number of LEDs	8 (parallel)	8 (parallel)	8 (parallel)	8 (parallel)
Monolithic	yes	yes	yes	yes
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85
Output Current, A	0.125	0.125	0.125	0.125
Synchronous	no	no	no	no
Topology	Charge Pump, LED Driver	Charge Pump, LED Driver	Charge Pump, LED Driver	Charge Pump, LED Driver
Vin Max, V	4.5	4.5	4.5	4.5
Vin Min, V	2.7	2.7	2.7	2.7
Vout Max, V	4.5	4.5	4.5	4.5

Öko-Plan

	LTC3202EDD#PBF	LTC3202EDD#TRPBF	LTC3202EMS#PBF	LTC3202EMS#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Artikel

Herunterladen
LTC3202 Charge Pump Improves Efficiency for Powering White LEDs &mdash LT Journal
PDF, 171 Kb, Datei veröffentlicht: Sep 1, 2001
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DESIGN IDEAS LTC3202 Charge Pump Improves
Efficiency for Powering White LEDs
by Steven Martin
Introduction
White LEDs continue to make significant inroads as backlights for color
active-matrix liquid crystal displays
in portable equipment. They offer size,
reliability and cost advantages over
competing solutions such as cold
cathode fluorescent lamps (CCFLs).
However, they require a higher voltage than can be provided by a sagging
lithium-ion battery. Charge pumps
provide an economical and compact
means of attaining a modest increase
in voltage.
Although charge pump solutions
are simple, they can have drawbacks.
They are typically noisy and have only IIN
100mA/DIV 0mA 200ns/DIV Figure 2. Input current waveform at the input bypass capacitor DESIGN IDEAS
LTC3202 Charge Pump Improves
Efficiency for Powering White LEDs
. 31
Steven Martin SMBus Controls CPU Voltage …

Modellreihe

Serie: LTC3202 (4)

LTC3202EDD#PBF LTC3202EDD#TRPBF LTC3202EMS#PBF LTC3202EMS#TRPBF

Herstellerklassifikation

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

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