Datasheet Linear Technology LT1619 — Datenblatt

Hersteller	Linear Technology
Serie	LT1619

PWM-Controller im Niederspannungsstrommodus

Datenblätter

PDF, 268 Kb, Revision: A, Datei hochgeladen: Sep 3, 2017

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Preise

Verpackung

	LT1619EMS8#PBF	LT1619EMS8#TRPBF	LT1619ES8#PBF	LT1619ES8#TRPBF
N	1	2	3	4
Package	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	SO-8 Paketumrisszeichnung	SO-8 Paketumrisszeichnung
Package Code	MS8	MS8	S8	S8
Package Index	05-08-1660	05-08-1660	05-08-1610 (S8)	05-08-1610 (S8)
Pin Count	8	8	8	8

Parameter

Parameters / Models	LT1619EMS8#PBF	LT1619EMS8#TRPBF	LT1619ES8#PBF	LT1619ES8#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no
Features	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode	External Synchronization, Burst Mode
Frequency, kHz	550	550	550	550
Frequency Sync Range	300kHz - 500kHz	300kHz - 500kHz	300kHz - 500kHz	300kHz - 500kHz
Integrated Inductor	no	no	no	no
Ishutdown, µA	15	15	15	15
Isupply, mA	9	9	9	9
Max Phases	1	1	1	1
Monolithic	no	no	no	no
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85
Polyphase	no	no	no	no
Sense Resistor	Rsense	Rsense	Rsense	Rsense
Switch Current, A	20	20	20	20
Synchronous	no	no	no	no
Topology	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback	Boost, Sepic, Flyback
Vin Max, V	18	18	18	18
Vin Min, V	1.9	1.9	1.9	1.9
Vin Min Startup, V	1.9	1.9	1.9	1.9
Vout Max, V	18	18	18	18
Vout Maximum	3, 5, 12 and higher	3, 5, 12 and higher	3, 5, 12 and higher	3, 5, 12 and higher
Vout Min, V	1.24	1.24	1.24	1.24
Vswitch Max, V	20	20	20	20

Öko-Plan

	LT1619EMS8#PBF	LT1619EMS8#TRPBF	LT1619ES8#PBF	LT1619ES8#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Konstruktionshinweise

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LT1619: Tiny Boost Controller Provides Efficient Solutions for Low Voltage Inputs &mdash DN255
PDF, 78 Kb, Datei veröffentlicht: Apr 2, 2001
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advertisement Tiny Boost Controller Provides Efficient Solutions
for Low Voltage Inputs вЂ“ Design Note 255
Keith Szolusha The LT1619 provides a complete solution for low input
voltage applications that require low side MOSFET drive.
It is a 300kHz, current mode PWM controller capable
of operating from inputs ranging from 1.9V to 18V. The
rail-to-rail, 1A MOSFET driver is capable of driving an
external MOSFET gate to within 350mV of the supply
rail and to within 100mV of ground. Bootstrapping the
driver supply pin (DRV) to the output enables the power
supply to operate from input voltages as low as 1.9V yet
still drive the MOSFET gate voltage high enough for full
enhancement. The 53mV low side current limit threshold R2
12.4k R1
37.4k 1
2
3 220pF 75k 4 S/S VIN FB DRV
LT1619 VC
GND GATE
SENSE 15nF 8
7
6
5 + …

Artikel

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LT1619 Boost Controller Provides Efficient Solutions for Low Voltage Inputs &mdash LT Journal
PDF, 180 Kb, Datei veröffentlicht: Sep 1, 2000
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DESIGN FEATURES LT1619 Boost Controller Provides
Efficient Solutions for
by Bing Fong Ma and
Low Voltage Inputs Kurk Mathews Introduction
As logic voltages continue to fall, it is
increasingly common to find a high
current, low voltage (3.3V or less)
supply satisfying a large portion of a
circuitвЂ™s power requirement. While
this, in itself, is not a problem, generating subsequent voltages at even
moderate currents from such a low
voltage source can be challenging.
Selecting a topology such as the boost,
SEPIC or flyback converter is the easy
part. Unfortunately, finding a switching regulator controller or MOSFET
that works well at low voltages has
been difficult until now.
The new LT1619 provides a complete solution for low voltage and other
applications requiring low-side MOS
power transistors. The LT1619 is a
300kHz (externally synchronizable to
frequencies as high as 500kHz) current mode PWM controller capable of
operating from inputs ranging from …

Modellreihe

Serie: LT1619 (4)

LT1619EMS8#PBF LT1619EMS8#TRPBF LT1619ES8#PBF LT1619ES8#TRPBF

Herstellerklassifikation

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

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