Datasheet Linear Technology LT1946A — Datenblatt

Hersteller	Linear Technology
Serie	LT1946A

2,7-MHz-Boost-DC / DC-Wandler mit 1,5-A-Schalter und Softstart

Datenblätter

Vorschau und Herunterladen

PDF, 326 Kb, Revision: S, Datei hochgeladen: Sep 3, 2017, Seiten: 12
2.7MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start

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Preise

Verpackung

	LT1946AEMS8E#PBF	LT1946AEMS8E#TRPBF
N	1	2
Package	MS-8E Paketumrisszeichnung	MS-8E Paketumrisszeichnung
Package Code	MS8E	MS8E
Package Index	05-08-1662	05-08-1662
Pin Count	8	8

Parameter

Parameters / Models	LT1946AEMS8E#PBF	LT1946AEMS8E#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC459A	DC459A
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Frequency, kHz	2700	2700
Integrated Inductor	no	no
Ishutdown, µA	0.1	0.1
Isupply, mA	3.6	3.6
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Polyphase	no	no
Switch Current, A	2.1	2.1
Synchronous	no	no
Topology	Boost, Sepic, Flyback	Boost, Sepic, Flyback
Vin Max, V	16	16
Vin Min, V	2.45	2.45
Vin Min Startup, V	2.45	2.45
Vout Max, V	36	36
Vout Min, V	1.25	1.25
Vswitch Max, V	36	36

Öko-Plan

	LT1946AEMS8E#PBF	LT1946AEMS8E#TRPBF
RoHS	Compliant	Compliant

Artikel

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1.2MHz and 2.7MHz, 1.5A Boost Converters Drive Big LCDs, LEDs &mdash LT Journal
PDF, 218 Kb, Datei veröffentlicht: Mar 1, 2002
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DESIGN IDEAS 1.2MHz and 2.7MHz, 1.5A Boost
Converters Drive Big LCDs, LEDs
by Albert Wu Introduction Triple Output TFT Supply
Figure 1 shows a typical triple output
TFT supply. The main output of 8V
can provide 375mA of output current. Charge pumps are used to
generate the 23V and вЂ“8V outputs.
Figure 2 shows the efficiency of the
circuit as the 8V output load is varied. The efficiency graph includes the 85
80
75
EFFICIENCY (%) is useful in applications where noise
in the 1MHz region is unacceptable,
such as DSL power supplies and automotive LED dash board backlights.
Both parts include an integrated softstart function to keep the start-up
inrush current well controlled. The
LT1946 comes in the space saving
MSOP-8 package with a maximum
height of 1.1mm, and the LT1946A
comes in a MSOP-8E thermally enhanced package. The LT1946/LT1946A is a step-up,
or boost, DC/DC converter with a
built-in 1.5A, 200mв„¦ switch. The
minimum current limit of 1.5A is …

Modellreihe

Serie: LT1946A (2)

LT1946AEMS8E#PBF LT1946AEMS8E#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

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