Datasheet Linear Technology LTC3623

Manufacturer	Linear Technology
Series	LTC3623

15V, ±5A Rail-to-Rail Synchronous Buck Regulator

Datasheets

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PDF, 1.5 Mb, Language: en, File uploaded: Sep 22, 2017, Pages: 30
15V, ±5A Rail-to-Rail Synchronous Buck Regulator

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Packaging

	LTC3623EUDD#PBF	LTC3623EUDD#TRPBF	LTC3623IUDD#PBF	LTC3623IUDD#TRPBF
N	1	2	3	4
Package	3x5 QFN-24 Package Outline Drawing	3x5 QFN-24 Package Outline Drawing	3x5 QFN-24 Package Outline Drawing	3x5 QFN-24 Package Outline Drawing
Package Code	UDD	UDD	UDD	UDD
Package Index	05-08-1833	05-08-1833	05-08-1833	05-08-1833
Pin Count	24	24	24	24

Parametrics

Parameters / Models	LTC3623EUDD#PBF	LTC3623EUDD#TRPBF	LTC3623IUDD#PBF	LTC3623IUDD#TRPBF
Architecture	Constant Frequency Controlled On-Time	Constant Frequency Controlled On-Time	Constant Frequency Controlled On-Time	Constant Frequency Controlled On-Time
Demo Boards	DC2131A	DC2131A	DC2131A	DC2131A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no
Features	Low EMI, Silent Switcher Architecture, Source/Sink Current, Current Source Reference, Output Current Monitor, Resistor Set Frequency	Low EMI, Silent Switcher Architecture, Source/Sink Current, Current Source Reference, Output Current Monitor, Resistor Set Frequency	Low EMI, Silent Switcher Architecture, Source/Sink Current, Current Source Reference, Output Current Monitor, Resistor Set Frequency	Low EMI, Silent Switcher Architecture, Source/Sink Current, Current Source Reference, Output Current Monitor, Resistor Set Frequency
Frequency, kHz	4000	4000	4000	4000
Frequency Adjust Range	400kHz - 4MHz	400kHz - 4MHz	400kHz - 4MHz	400kHz - 4MHz
Frequency Sync Range	400kHz - 4MHz	400kHz - 4MHz	400kHz - 4MHz	400kHz - 4MHz
Integrated Inductor	no	no	no	no
Isupply, mA	1.45	1.45	1.45	1.45
Monolithic	yes	yes	yes	yes
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Output Current, A	5	5	5	5
Polyphase	yes	yes	yes	yes
Switch Current, A	6.2	6.2	6.2	6.2
Synchronous	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck
Vin Max, V	15	15	15	15
Vin Min, V	4	4	4	4
Vout Max, V	14.5	14.5	14.5	14.5
Vout Maximum	Vin - 0.5V	Vin - 0.5V	Vin - 0.5V	Vin - 0.5V
Vref Accuracy Over Temp, %	1	1	1	1

Eco Plan

	LTC3623EUDD#PBF	LTC3623EUDD#TRPBF	LTC3623IUDD#PBF	LTC3623IUDD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Design Notes

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High Efficiency, 15V Rail-to-Rail Output Synchronous Step-Down Regulator Can Source or Sink 5A &mdash DN560
PDF, 492 Kb, File published: Jan 20, 2017
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High Efficiency, 15V Rail-to-Rail Output Synchronous
Step-Down Regulator Can Source or Sink 5A
Design Note 560
Timothy Kozono 3.3V Output, 1MHz Buck Regulator
Figure 1 shows the complete schematic for a high
efficiency 12V input to 3.3V output application. The
compact package contains a low 30mО© RDS(ON)
synchronous bottom MOSFET switch and a 60mО©
RDS(ON) synchronous top MOSFET switch for high
efficiency and minimal thermal issues. FigureВ 2 shows
the continuous and discontinuous conduction mode
03/17/560 RT IMON DIR PGFB MODE/
SYNC
PVIN
INTVCC 1в„¦ 33ОјF 0.1ОјF
49.9k PGND 10k 4.7ОјF SVIN
LTC3623 GSNS 0.1ОјF VOUT+
3.3V
AT В±5A 1.5ОјH SW
VOUT RUN
ISET BOOST ITH 330ОјF PGOOD
dn560 F01 10nF 66.5k 17.8k 100pF 470pF Figure 1. High Efficiency 12V to 3.3V 1MHz Step-Down
Regulator with Programmable Reference …

Articles

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High Efficiency, 15V Rail-to-Rail Output Synchronous Step-Down Regulator Can Source or Sink 5A &mdash LT Journal
PDF, 462 Kb, File published: Jul 7, 2017
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High Efficiency, 15V Rail-to-Rail Output Synchronous
Step-Down Regulator Can Source or Sink 5A
Timothy Kozono The LTC3623 is a high efficiency, monolithic synchronous step-down regulator capable of
sourcing or sinking up to 5A of continuous output current from an input voltage range of
4V to 15V. Its compact 3mm Г— 5mm QFN package incorporates an abundance of features
including a low EMI Silent Switcher architecture, output voltage cable drop compensation
and single resistor output voltage programming. The constant frequency/controlled
on-time architecture responds quickly to line and load transients even in low duty cycle,
high frequency applications. The device offers a 400kHz to 4MHz operating frequency
range with multiple optional protection and monitoring features, enabling compact, robust
solutions. VIN regulation, discontinuous/continuous mode and a supply current less than
1ВµA during shutdown make this regulator suitable for a wide range of power applications.
A single resistor is used to set the internal reference voltage for the device. The
adjustable internal reference voltage
sets the output voltage and allows the
outputВ voltage to operate rail-to-rail,
from 0V to VIN . The reference voltage
can be driven directly as an audio
driver or configured to operate as a
TEC driver. Capable of sourcing or
sinking 5A of output current, the regulator moves the output voltage quickly
in either direction. The output
current monitor signal can be used …

Model Line

Series: LTC3623 (4)

LTC3623EUDD#PBF LTC3623EUDD#TRPBF LTC3623IUDD#PBF LTC3623IUDD#TRPBF

Manufacturer's Classification

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