LT3570IFE#PBF

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Analog Devices

CONV DC-DC 2.5V TO 36V SYNCHRONOUS STEP DOWN TRIPLE-OUT 0.8V 1.5A 20-PIN TSSOP EP TUBE

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LT3570IFE#PBF

Active

Analog Devices

CONV DC-DC 2.5V TO 36V SYNCHRONOUS STEP DOWN TRIPLE-OUT 0.8V 1.5A 20-PIN TSSOP EP TUBE

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DocumentsDatasheet R530 Reliability Data

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT3570IFE#PBF

Frequency - Switching [Max]	2.1 MHz
Frequency - Switching [Min]	500 kHz
Mounting Type	Surface Mount
Number of Outputs	3
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case [custom]	4.4 mm, 0.173 in
Package / Case [custom]	Exposed Pad
Package / Case [custom]	20-TSSOP
Supplier Device Package	20-TSSOP-EP
Topology	Step-Up (Boost) (1), Step-Down (Buck) (1), Linear (LDO) (1)
Voltage - Supply [Max]	36 V
Voltage - Supply [Min]	2.5 V
Voltage/Current - Output 1	0.8 V, 1.5 A
Voltage/Current - Output 2	1.5 A, 0.8 V
Voltage/Current - Output 3	Controller
w/LED Driver	False
w/Sequencer	False
w/Supervisor	False

LT3570 Series

1.5A Buck Converter, 1.5A Boost Converter and LDO Controller

Part	Mounting Type	Frequency - Switching [Min]	Frequency - Switching [Max]	Voltage/Current - Output 3	Topology	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Number of Outputs	Package / Case [custom]	Package / Case [custom]	Package / Case [custom]	Voltage/Current - Output 1	Voltage/Current - Output 2	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices LT3570IFE#PBF	Surface Mount	500 kHz	2.1 MHz	Controller	Linear (LDO) (1) Step-Down (Buck) (1) Step-Up (Boost) (1)	36 V	2.5 V	20-TSSOP-EP	3	0.173 in 4.4 mm	Exposed Pad	20-TSSOP	0.8 V 1.5 A	0.8 V 1.5 A	125 °C	-40 °C
Analog Devices LT3570IFE#TRPBF	Surface Mount	500 kHz	2.1 MHz	Controller	Linear (LDO) (1) Step-Down (Buck) (1) Step-Up (Boost) (1)	36 V	2.5 V	20-TSSOP-EP	3	0.173 in 4.4 mm	Exposed Pad	20-TSSOP	0.8 V 1.5 A	0.8 V 1.5 A	125 °C	-40 °C
Analog Devices LT3570EFE#PBF	Surface Mount	500 kHz	2.1 MHz	Controller	Linear (LDO) (1) Step-Down (Buck) (1) Step-Up (Boost) (1)	36 V	2.5 V	20-TSSOP-EP	3	0.173 in 4.4 mm	Exposed Pad	20-TSSOP	0.8 V 1.5 A	0.8 V 1.5 A	125 °C	-40 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 11.68
		10	$ 8.20
		25	$ 7.30
		100	$ 6.30
		250	$ 5.81
		500	$ 5.52
		1000	$ 5.27

Description

General part information

LT3570 Series

The LT3570 is a buck and boost converter with internal power switches and LDO controller. Each converter is designed with a 1.5A current limit and an input range from 2.5V to 36V, making the LT3570 ideal for a wide variety of applications. Switching frequencies up to 2.1MHz are programmed with an external timing resistor and the oscillator can be synchronized to an external clock up to 2.75MHz.The LT3570 features a programmable soft-start function that limits the feedback voltage during start-up helping prevent overshoot and limiting inrush current. The LDO controller is capable of delivering up to 10mA of base current to an external NPN transistor.ApplicationsCable and Satellite Set-Top BoxesAutomotive SystemsTelecom Systems"Dying Gasp" SystemsTFT LCD Displays