Datasheet Linear Technology LTC3736-1

Manufacturer	Linear Technology
Series	LTC3736-1

Dual 2-Phase, No RSENSE Synchronous Controller with Spread Spectrum

Datasheets

Preview and Download

PDF, 541 Kb, Language: en, File uploaded: Sep 23, 2017, Pages: 28
Dual 2-Phase, No RSENSE , Synchronous Controller with Spread Spectrum

Extract from the document

Packaging

	LTC3736EGN-1#PBF	LTC3736EGN-1#TRPBF	LTC3736EUF-1#PBF	LTC3736EUF-1#TRPBF
N	1	2	3	4
Package	SSOP-24 Package Outline Drawing	SSOP-24 Package Outline Drawing	4x4 QFN-24 Package Outline Drawing	4x4 QFN-24 Package Outline Drawing
Package Code	GN	GN	UF	UF
Package Index	05-08-1641 (GN24)	05-08-1641 (GN24)	05-08-1697	05-08-1697
Pin Count	24	24	24	24

Parametrics

Parameters / Models	LTC3736EGN-1#PBF	LTC3736EGN-1#TRPBF	LTC3736EUF-1#PBF	LTC3736EUF-1#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC803A	DC803A	DC803A	DC803A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no
Features	Tracking, No Rsense, Spread Spectrum, PolyPhase, Selectable Switching Frequency, Power Good	Tracking, No Rsense, Spread Spectrum, PolyPhase, Selectable Switching Frequency, Power Good	Tracking, No Rsense, Spread Spectrum, PolyPhase, Selectable Switching Frequency, Power Good	Tracking, No Rsense, Spread Spectrum, PolyPhase, Selectable Switching Frequency, Power Good
Frequency, kHz	750	750	750	750
Frequency Adjust Range	300kHz, 500kHz, 750kHz	300kHz, 500kHz, 750kHz	300kHz, 500kHz, 750kHz	300kHz, 500kHz, 750kHz
Integrated Inductor	no	no	no	no
Ishutdown, µA	9	9	9	9
Isupply, mA	0.5	0.5	0.5	0.5
Max Phases	2	2	2	2
Monolithic	no	no	no	no
Number of Outputs	2	2	2	2
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85
Output Current, A	5	5	5	5
Output Current 2, A	5	5	5	5
Polyphase	yes	yes	yes	yes
Sense Resistor	None	None	None	None
Switch Current, A	5	5	5	5
Switch Current 2, A	5	5	5	5
Synchronous	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck
Vin Max, V	9.8	9.8	9.8	9.8
Vin Min, V	2.75	2.75	2.75	2.75
Vout Max, V	9.8	9.8	9.8	9.8
Vout Maximum	Vin	Vin	Vin	Vin
Vout Min, V	0.6	0.6	0.6	0.6
Vout Min 2, V	.8	.8	.8	.8
Vref Accuracy Over Temp, %	1.5	1.5	1.5	1.5

Eco Plan

	LTC3736EGN-1#PBF	LTC3736EGN-1#TRPBF	LTC3736EUF-1#PBF	LTC3736EUF-1#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Articles

Download
2-Phase Dual Synchronous DC/DC Controller with Tracking Provides High Efficiency in a Compact Footprint &mdash LT Journal
PDF, 193 Kb, File published: Mar 25, 2005
Extract from the document
DESIGN FEATURES 2-Phase Dual Synchronous DC/DC
Controller with Tracking Provides High
Efп¬Ѓciency in a Compact Footprint
by Jason Leonard Introduction
The LTC3736 is a 2-phase dual
synchronous step-down DC/DC
controller that requires few external
components. Its No RSENSE, constant
frequency, current mode architecture
eliminates the need for current sense
resistors and improves efп¬Ѓciency, with-out requiring a Schottky diode. The two
controllers are operated 180 degrees
out of phase, reducing the required
input capacitance and power loss and
noise due to its ESR. A tracking input
allows the second output to track the
п¬Ѓrst output (or another supply) dur-59k 187k VIN
2.7V TO 8V*
CIN
10ВµF
Г—2 22
23
24 …
Download
Dual Switcher with Spread Spectrum Reduces EMI &mdash LT Journal
PDF, 882 Kb, File published: Mar 25, 2005
Extract from the document
DESIGN FEATURES Dual Switcher with Spread Spectrum
by Jason Leonard
Reduces EMI
Introduction
Switching DC/DC power supplies
are increasingly popular in modern
electronic devices because of their
high efп¬Ѓciency, which reduces heat
dissipation and increases battery run
time. Nevertheless, the rapid switching of current makes them a potential
source of radiated and conducted
electromagnetic interference (EMI).
EMI can cause a variety of problems,
from the relatively benign addition of
noise to a television picture or radio
receiver to the more serious impairment of the operation of electronic
devices in critical applications.
Unfortunately, the amount of EMI
generated, and whether it will produce signiп¬Ѓcant interference, is not
easily quantiп¬Ѓable and is often not
known until the late stages of the
development. Therefore, it is wise to
proactively minimize the potential …

Model Line

Series: LTC3736-1 (4)

LTC3736EGN-1#PBF LTC3736EGN-1#TRPBF LTC3736EUF-1#PBF LTC3736EUF-1#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers | Multiple Output Buck