Datasheet Linear Technology LTC1265CS#TRPBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC1265
Artikelnummer	LTC1265CS#TRPBF

1.2A, hocheffizienter Abwärts-DC / DC-Wandler

Datenblätter

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PDF, 244 Kb, Sprache: en, Datei hochgeladen: Sep 20, 2017, Seiten: 16
1.2A, High Efficiency Step-Down DC/DC Converter

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Verpackung

Package	SO-14
Package Code	S
Package Index	05-08-1610 (S14)

Parameter

Architecture	Constant Off-Time Current Mode
Demo Boards	DC074A-A,DC074A-B,DC074A-C
Design Tools	LTspice Model
Export Control	no
Features	Burst Mode
Frequency	700 kHz
Integrated Inductor	no
Ishutdown	15 µA
Isupply	1.8 mA
Max Phases	1
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 70 °C
Output Current	0.96 A
Polyphase	no
Switch Current	1.2 A
Synchronous	no
Topology	Buck, Inverting
Vin Max	13 V
Vin Min	4 V
Vout Max	13 V
Vout Maximum	Vin
Vout Min	1.25 V
Vref Accuracy Over Temp	4 %
Vswitch Max	13 V

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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LTC1265: A New, High Efficiency Monolithic Buck Converter &mdash DN105
PDF, 74 Kb, Datei veröffentlicht: Jun 1, 1995
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advertisement A New, High Efficiency Monolithic Buck Converter
Design Note 105
San-Hwa Chee
The LTC В®1265 is a 14-pin SOIC step-down converter
capable of operating at frequencies up to 700kHz. High
frequency operation permits the use of small inductors
for size sensitive applications. The LTC1265 has an
internal 0.3О© (at a supply voltage of 10V) P-channel
power MOSFET switch, which is capable of supplying
up to 1.2A of output current. With no load, the converter requires only 160ОјA of quiescent current; this
decreases to a mere 5ОјA in shutdown conditions. In
dropout mode, the internal P-channel power MOSFET
switch is turned on continuously (at DC), thereby maximizing battery life. The part is protected from output
shorts by its built-in current limiting. In addition to the
features already mentioned, the LTC1265 incorporates
a low-battery detector.
The LTC1265 is a current mode DC/DC converter with
Burst ModeВ® operation. The current mode architecture
gives the LTC1265 excellent load and line regulation.
Burst Mode operation results in high efп¬Ѓciency with
both high and low load currents. The LTC1265 comes
in three versions: LTC1265-5 (5V output), LTC1265-3.3
(3.3V output) and LTC1265 (adjustable). All versions …
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Highly Integrated High Efficiency DC/DC Conversion &mdash DN98
PDF, 77 Kb, Datei veröffentlicht: Mar 1, 1995
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advertisement Highly Integrated High Efficiency DC/DC Conversion
Design Note 98
San-Hwa Chee and Howard Haensel
The LTC В®1574 and LTC1265 high efп¬Ѓciency step-down
regulators minimize external components by using integrated low RDS(ON) P-channel switches. The LTC1574
goes one step further by including a low forward drop
Schottky diodeвЂ”an industry п¬Ѓrst. Both regulators also
include on-chip low-battery detectors.
Burst ModeВ® operation allows the LTC1574 and LTC1265
to achieve over 90% efп¬Ѓciency for load currents as
low as 10mA. Current mode operation provides clean
start-up, accurate current limit, and excellent line and
load regulation. Inherent 100% duty cycle in dropout
allows the user to extract maximum battery life. Both
regulators can be shut down to a few microamperes.
LTC1574
The LTC1574 features the highest level of integration
for a switching regulator. Besides an on-chip power
MOSFET, it includes a low forward drop Schottky diode.
The user needs only to provide an inductor and input/
output п¬Ѓlter capacitors for a complete high efп¬Ѓciency
step-down converter. The current limit is pin selectable
to either 340mA or 600mA, optimizing efп¬Ѓciency for a …

Modellreihe

Serie: LTC1265 (8)

LTC1265CS#PBF LTC1265CS#TRPBF LTC1265CS-3.3#PBF LTC1265CS-3.3#TRPBF LTC1265CS-5#PBF LTC1265CS-5#TRPBF LTC1265IS#PBF LTC1265IS#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck

Andere Namen:

LTC1265CSTRPBF, LTC1265CS TRPBF