Datasheet Linear Technology LTC3569

Manufacturer	Linear Technology
Series	LTC3569

Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References

Datasheets

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PDF, 399 Kb, Language: en, File uploaded: Sep 22, 2017, Pages: 26
Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References

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Prices

Packaging

	LTC3569EFE#PBF	LTC3569EFE#TRPBF	LTC3569EUD#PBF	LTC3569EUD#TRPBF	LTC3569EUDC#PBF	LTC3569EUDC#TRPBF	LTC3569IFE#PBF	LTC3569IFE#TRPBF	LTC3569IUD#PBF	LTC3569IUD#TRPBF	LTC3569IUDC#PBF	LTC3569IUDC#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12
Package	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	3x3 QFN-20 Package Outline Drawing	3x3 QFN-20 Package Outline Drawing	3x4 QFN-20 Package Outline Drawing	3x4 QFN-20 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	3x3 QFN-20 Package Outline Drawing	3x3 QFN-20 Package Outline Drawing	3x4 QFN-20 Package Outline Drawing	3x4 QFN-20 Package Outline Drawing
Package Code	FE	FE	UD	UD	UDC	UDC	FE	FE	UD	UD	UDC	UDC
Package Index	05-08-1663 (BA)	05-08-1663 (BA)	05-08-1720	05-08-1720	05-08-1742	05-08-1742	05-08-1663 (BA)	05-08-1663 (BA)	05-08-1720	05-08-1720	05-08-1742	05-08-1742
Pin Count	16	16	20	20	20	20	16	16	20	20	20	20

Parametrics

Parameters / Models	LTC3569EFE#PBF	LTC3569EFE#TRPBF	LTC3569EUD#PBF	LTC3569EUD#TRPBF	LTC3569EUDC#PBF	LTC3569EUDC#TRPBF	LTC3569IFE#PBF	LTC3569IFE#TRPBF	LTC3569IUD#PBF	LTC3569IUD#TRPBF	LTC3569IUDC#PBF	LTC3569IUDC#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	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A	DC1340A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no	no	no	no	no	no	no	no	no
Features	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, 100% Duty Cycle
Frequency, kHz	2250	2250	2250	2250	2250	2250	2250	2250	2250	2250	2250	2250
Frequency Adjust Range	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz	1MHz - 3MHz
Frequency Sync Range	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz	1.2MHz - 3MHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Isupply, mA	0.022	0.022	0.022	0.022	0.022	0.022	0.022	0.022	0.022	0.022	0.022	0.022
Max Phases	1	1	1	1	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	3	3	3	3	3	3	3	3	3	3	3	3
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2
Output Current 2, A	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6
Output Current 3, A	0.6	0.6	0.6	0.6	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	no	no	no	no
Switch Current, A	2	2	2	2	2	2	2	2	2	2	2	2
Switch Current 2, A	1	1	1	1	1	1	1	1	1	1	1	1
Switch Current 3, A	1	1	1	1	1	1	1	1	1	1	1	1
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Topology 3	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vin Min, V	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
Vout Max, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vout Max 2, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vout Max 3, V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vout Maximum	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin
Vout Min, V	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425
Vout Min 2, V	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425
Vout Min 3, V	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425	0.425
Vref Accuracy Over Temp, %	2	2	2	2	2	2	2	2	2	2	2	2

Eco Plan

	LTC3569EFE#PBF	LTC3569EFE#TRPBF	LTC3569EUD#PBF	LTC3569EUD#TRPBF	LTC3569EUDC#PBF	LTC3569EUDC#TRPBF	LTC3569IFE#PBF	LTC3569IFE#TRPBF	LTC3569IUD#PBF	LTC3569IUD#TRPBF	LTC3569IUDC#PBF	LTC3569IUDC#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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Triple Buck Regulator Features 1-Wire Dynamically Programmable Output Voltages &mdash DN459
PDF, 112 Kb, File published: Jan 20, 2009
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Triple Buck Regulator Features 1-Wire Dynamically
Programmable Output Voltages
Design Note 459
Andy Bishop
Introduction
The LTC В®3569 is a compact power solution for handheld
devices. Its tiny 3mm Г— 3mm QFN package includes
three buck regulators with individually programmable
output voltages. One regulator supports load currents
up to 1200mA, while the other two support currents to
600mA. Two regulators can be paralleled for increased
load capability. Each current-mode regulator is internally
compensated with excellent load and line regulation. A
complete 2-or 3-output solution requires a minimum
number of external passive components.
Three Individually Programmable Bucks
The LTC3569вЂ™s three output voltages are independently
programmed by simply toggling their respective enable
pins. Each time an enable pin sees a falling edge, a 4-bit
counter is decremented. After a time-out delay of 120Ојs
from the last rising edge at the enable pins, the counter
state is latched into the feedback reference voltage DAC.
In this way, the reference voltage can be programmed …

Model Line

Series: LTC3569 (12)

LTC3569EFE#PBF LTC3569EFE#TRPBF LTC3569EUD#PBF LTC3569EUD#TRPBF LTC3569EUDC#PBF LTC3569EUDC#TRPBF LTC3569IFE#PBF LTC3569IFE#TRPBF LTC3569IUD#PBF LTC3569IUD#TRPBF LTC3569IUDC#PBF LTC3569IUDC#TRPBF

Manufacturer's Classification

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