Datasheet Linear Technology LTC3404 — Datenblatt

Hersteller	Linear Technology
Serie	LTC3404

1,4 MHz hocheffizienter monolithischer synchroner Abwärtsregler

Datenblätter

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PDF, 215 Kb, Sprache: en, Datei hochgeladen: Sep 21, 2017, Seiten: 16
1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator

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Preise

Verpackung

	LTC3404EMS8#PBF	LTC3404EMS8#TRPBF	LTC3404IMS8#PBF	LTC3404IMS8#TRPBF	LTC3404MPMS8	LTC3404MPMS8#PBF	LTC3404MPMS8#TR	LTC3404MPMS8#TRPBF
N	1	2	3	4	5	6	7	8
Package	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung	MS-8 Paketumrisszeichnung
Package Code	MS8	MS8	MS8	MS8	MS8	MS8	MS8	MS8
Package Index	05-08-1660	05-08-1660	05-08-1660	05-08-1660	05-08-1660	05-08-1660	05-08-1660	05-08-1660
Pin Count	8	8	8	8	8	8	8	8

Parameter

Parameters / Models	LTC3404EMS8#PBF	LTC3404EMS8#TRPBF	LTC3404IMS8#PBF	LTC3404IMS8#TRPBF	LTC3404MPMS8	LTC3404MPMS8#PBF	LTC3404MPMS8#TR	LTC3404MPMS8#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC413A	DC413A	DC413A	DC413A	DC413A	DC413A	DC413A	DC413A
Design Tools	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model	LTspice Model,LTpowerCAD Model
Export Control	no	no	no	no	no	no	no	no
Features	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle	Burst Mode, External Synchronization, 100% Duty Cycle
Frequency, kHz	1400	1400	1400	1400	1400	1400	1400	1400
Frequency Sync Range	1MHz - 1.7MHz	1MHz - 1.7MHz	1MHz - 1.7MHz	1MHz - 1.7MHz	1MHz - 1.7MHz	1MHz - 1.7MHz	1MHz - 1.7MHz	1MHz - 1.7MHz
Integrated Inductor	no	no	no	no	no	no	no	no
Ishutdown, µA	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01
Isupply, mA	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01
Max Phases	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85	-55 to 125	-55 to 125	-55 to 125	-55 to 125
Output Current, A	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6
Polyphase	no	no	no	no	no	no	no	no
Switch Current, A	1	1	1	1	1	1	1	1
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	6	6	6	6	6	6	6	6
Vin Min, V	2.65	2.65	2.65	2.65	2.65	2.65	2.65	2.65
Vout Max, V	6	6	6	6	6	6	6	6
Vout Maximum	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin
Vout Min, V	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8
Vref Accuracy Over Temp, %	2	2	2	2	2	2	2	2

Öko-Plan

	LTC3404EMS8#PBF	LTC3404EMS8#TRPBF	LTC3404IMS8#PBF	LTC3404IMS8#TRPBF	LTC3404MPMS8	LTC3404MPMS8#PBF	LTC3404MPMS8#TR	LTC3404MPMS8#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Not Compliant	Compliant	Not Compliant	Compliant

Konstruktionshinweise

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1.4MHz Switching Regulator Draws Only 10ВµA Supply Current &mdash DN256
PDF, 92 Kb, Datei veröffentlicht: May 1, 2001
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advertisement 1.4MHz Switching Regulator Draws Only 10ВµA Supply Current
Design Note 256
Jaime Tseng
Introduction
High switching frequency and low quiescent current
are no longer conп¬‚icting requirements in the design
of battery-powered products. Linear TechnologyвЂ™s
LTC В®3404 is the industryвЂ™s п¬Ѓrst step-down switching
regulator that operates at 1.4MHz while drawing only
10ОјA of supply current (using Burst ModeВ® operation)
at no load. This impressive feat allows for better than
90% efп¬Ѓciency over three decades of output load current
while allowing the use of tiny external components. With
the on-chip main and synchronous switches, minimal
external components are necessary to make a complete,
high efп¬Ѓciency (up to 95%) step-down regulator. Tiny
external components and the LTC3404вЂ™s MSOP package
provide a minimum-area solution to meet the limited
space requirements of todayвЂ™s portable applications. driving SYNC/MODE pin HIGH with a logic-level signal
or by tying it to VIN. For lower noise, pulse skipping
mode can be selected by driving the SYNC/MODE pin
LOW with a logic-level signal or by tying it to ground. In
this case, constant-frequency operation is maintained …

Artikel

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1.4MHz Switching Regulator Draws Only 10µA Supply Current &mdash LT Journal
PDF, 160 Kb, Datei veröffentlicht: Nov 1, 2000
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DESIGN IDEAS 1.4MHz Switching Regulator Draws
Only 10ВµA Supply Current
by Jaime Tseng LTC3404
47pF 1
2
3
4 RUN PLL LPF ITH SYNC/MODE VFB VIN GND SW 8 10ВµFвЂ
CER Burst Mode operation can be selected
by driving SYNC/MODE pin HIGH
with a logic-level signal or by tying it
to VIN. For lower noise, pulse skipping
mode can be selected by driving the
SYNC/MODE pin LOW with a logic
level signal or by tying it to ground. In
this case, constant-frequency operation is maintained at lower load
currents together with lower output
ripple. If the load current is low
enough, cycle skipping will eventually occur to maintain regulation. In
this mode, the efficiency will be lower
at very light loads, but becomes
comparable to Burst Mode operation
when the output load exceeds 50mA.
For switching-frequency-sensitive …

Modellreihe

Serie: LTC3404 (8)

LTC3404EMS8#PBF LTC3404EMS8#TRPBF LTC3404IMS8#PBF LTC3404IMS8#TRPBF LTC3404MPMS8 LTC3404MPMS8#PBF LTC3404MPMS8#TR LTC3404MPMS8#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators