Datasheet Linear Technology LT1370IT7#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LT1370
Artikelnummer	LT1370IT7#PBF

Hochleistungs-6A-Schaltregler mit 500 kHz

Datenblätter

PDF, 178 Kb, Revision: S, Datei hochgeladen: Sep 3, 2017

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Verpackung

Package	TO-220
Package Code	T7
Package Index	05-08-1422 (Std)

Parameter

Architecture	Constant Frequency Current Mode
Demo Boards	DC185A
Design Tools	LTspice File
Export Control	no
Features	External Synchronization
Frequency	600 kHz
Frequency Sync Range	600kHz - 800kHz
Integrated Inductor	no
Ishutdown	12 µA
Isupply	4.5 mA
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	-40 to 85 °C
Polyphase	no
Switch Current	6 A
Synchronous	no
Topology	Boost, Flyback, Sepic, Inverting
Vin Max	30 V
Vin Min	2.7 V
Vin Min Startup	2.7 V
Vout Max	35 V
Vout Min	1.245 V
Vswitch Max	35 V

Öko-Plan

RoHS

Compliant

Andere Optionen

Konstruktionshinweise

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The LT1370: A 500kHz, 6A Monolithic Boost Converter &mdash DN183
PDF, 78 Kb, Datei veröffentlicht: Jul 1, 1998
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advertisement A 500kHz, 6A Monolithic Boost Converter вЂ“ Design Note 183
Karl Edwards Circuit Description
The LT1370 is a current mode switcher. This means that
switch duty cycle is directly controlled by the switch
current rather than by the output voltage. This technique has several advantages: immediate response to
input voltage variations, greatly simpliп¬Ѓed closed-loop
frequency compensation, and pulse-by-pulse current
limiting, which provides maximum switch protection.
An internal low dropout regulator provides a 2.3V supply
to all control circuitry. This low dropout design allows
the input voltage to vary from 2.7V to 30V with virtually
no change in device performance. An internal 500kHz
oscillator is the basic clock for all timing. A bandgap
provides the reference for the feedback error ampliп¬Ѓer.
As with the LT1371, error ampliп¬Ѓer circuitry allows the
LT1370 to directly regulate negative output voltages.
The NFB pin regulates at вЂ“2.48V, while the ampliп¬ЃerвЂ™s
output internally drives the FB pin to 1.245V. The error
ampliп¬Ѓer is a current output (gm) type, so its output
voltage, present on the VC pin, can be externally clamped
to lower the current limit. A capacitor-coupled external
clamp provides soft start.
The S/S pin has two functions: synchronization and …

Modellreihe

Serie: LT1370 (6)

LT1370CR#PBF LT1370CR#TRPBF LT1370CT7#PBF LT1370IR#PBF LT1370IR#TRPBF LT1370IT7#PBF

Herstellerklassifikation

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

Andere Namen:

LT1370IT7PBF, LT1370IT7 PBF

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