LTC3520EUF#PBF

Active

Analog Devices Inc./Maxim Integrated

DC/DC CONV, SYNC BUCK, BUCK-BOOST, 2MHZ ROHS COMPLIANT: YES

LTC3520EUF#PBF

Active

Analog Devices Inc./Maxim Integrated

DC/DC CONV, SYNC BUCK, BUCK-BOOST, 2MHZ ROHS COMPLIANT: YES

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3520 Series

The LTC3520 combines 1A buck-boost and 600mA synchronous buck DC/DC converters in a tiny 4mm x 4mm package. A programmable switching frequency allows the efficiency to be optimized while minimizing the solution footprint. Both converters feature soft-start and current limit protection. The uncommitted gain block can be configured as an LDO or utilized as a battery-good comparator.The buck converter is current mode controlled with internal synchronous rectification to improve efficiency. Pin-selectable Burst Mode operation can be enabled to improve light load efficiency, or the buck converter can be operated in low noise PWM mode for sensitive applications.The buck-boost converter provides continuous conduction operation to maximize efficiency and minimize noise. At light loads, use of Burst Mode operation will improve efficiency.The LTC3520 provides a <1µA shutdown mode and over- temperature shutdown on both converters. The LTC3520 is available in a low profile (0.75mm) 24-lead 4mm x 4mm QFN package.ApplicationsPortable Media PlayersDigital CamerasHandheld PCs, PDAsGPS Receivers

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3520EUF#PBF

Current - Output (Max)	1 A
Current - Output (Min)	600 mA
Frequency - Switching (Max)	2 MHz
Frequency - Switching (Min)	100 kHz
Function	Step-Up/Step-Down, Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	24-WFQFN Exposed Pad
Package Length	4 mm
Package Name	24-QFN
Package Width	4 mm
Synchronous Rectifier	Yes
Topology	Buck, Buck-Boost
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.2 V
Voltage - Output (Max)	5.5 V
Voltage - Output (Min/Fixed)	0.8 V

LTC3520 Series

Part	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Number of Outputs	Function	Output Type	Synchronous Rectifier	Output Configuration	Voltage - Input (Min)	Mounting Type	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Package Width	Package Name	Package Length	Current - Output (Min)	Current - Output (Max)	Frequency - Switching (Max)	Frequency - Switching (Min)	Package / Case	Voltage - Input (Max)
Analog Devices Inc./Maxim Integrated LTC3520IUF#PBF	Buck Buck-Boost	125 °C	-40 °C	2	Step-Down Step-Up/Step-Down	Adjustable	Yes	Positive	2.2 V	Surface Mount	0.8 V	5.5 V	4 mm	24-QFN	4 mm	600 mA	1 A	2 MHz	100 kHz	24-WFQFN Exposed Pad	5.5 V
Analog Devices Inc./Maxim Integrated LTC3520IUF#TRPBF	Buck Buck-Boost	125 °C	-40 °C	2	Step-Down Step-Up/Step-Down	Adjustable	Yes	Positive	2.2 V	Surface Mount	0.8 V	5.5 V	4 mm	24-QFN	4 mm	600 mA	1 A	2 MHz	100 kHz	24-WFQFN Exposed Pad	5.5 V
Analog Devices Inc./Maxim Integrated LTC3520EUF#TRPBF	Buck Buck-Boost	125 °C	-40 °C	2	Step-Down Step-Up/Step-Down	Adjustable	Yes	Positive	2.2 V	Surface Mount	0.8 V	5.5 V	4 mm	24-QFN	4 mm	600 mA	1 A	2 MHz	100 kHz	24-WFQFN Exposed Pad	5.5 V
Analog Devices Inc./Maxim Integrated LTC3520EUF#PBF	Buck Buck-Boost	125 °C	-40 °C	2	Step-Down Step-Up/Step-Down	Adjustable	Yes	Positive	2.2 V	Surface Mount	0.8 V	5.5 V	4 mm	24-QFN	4 mm	600 mA	1 A	2 MHz	100 kHz	24-WFQFN Exposed Pad	5.5 V

Pricing

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

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R457 Reliability Data

LTC3520EUF#PBF | Datasheet