Internal Power Switch Buck-Boost
Analog Devices offers true buck/boost synchronous dc-to-dc converters. With their unique internal four MOSFET switch combination, they can seamlessly transition from step-down mode, through 100% dropout operation, and then to step-up mode to allow a fixed output voltage even when the input voltage fluctuates above or below the output.
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LT Journal
- 18V Buck-Boost Converter with Intelligent PowerPath Control Delivers >2A at 95% Efficiency from Dual Inputs PDF
- 1.5A Monolithic Buck-Boost DC/DC Converter with Up to 95% Efficiency Features 2.5V–15V Input and Output Voltage Ranges PDF
- 15V Buck-Boost Converters with Ultralow 1.3µA Quiescent Current are Tailored to Micropower Applications and the Internet of Things PDF
- 2.7V to 40V Monolithic Buck-Boost DC/DC Expands Input Capabilities, Regulates Seamlessly through Automotive Cold-Crank and Load-Dump Transients PDF
- 15V, 2.5A Monolithic Buck-Boost DC/DC Converter with 95% Efficiency and Low Noise Operation PDF
- Jun 2007 - 0.25in 2 x 1.8mm Dual Output Converter for Li-Ion to 3.3V and 1.8V PDF
- Jan 2008 - Complete 3-Rail Power Supply in a 4mm × 4mm QFN Package PDF
- June 2006 Tiny Buck-Boost Converter for Low Current Applications PDF
- June 2006 Efficient Buck-Boost Converter Ideal for Power Saving Modes and Wide Input Voltage Ranges PDF
- May 2005 - Versatile Buck-Boost Converter Offers High Efficiency in a Wide Variety of Applications PDF
- March 2005 - Buck-Boost Converter Minimizes Output Voltage Transients from Very Low to High Output Current PDF
- Dec 2003 High Input Voltage Monolithic Switcher Steps Up and Down Using Single Inductor PDF
- Sep 2003 Monolithic Buck-Boost Converter Provides 1A at 3.3V without Schottky Diodes PDF
- It Just Got Easier to Convert Lithium-Ion Battery Voltage to 3.3V with this Efficient Single Inductor Synchronous Buck-Boost Regulator
- 18V Buck-Boost Converter with Intelligent PowerPath Control Delivers >2A at 95% Efficiency from Dual Inputs
Technical Articles
Videos
Design Notes
- DN361 - Simple Battery Circuit Extends Power over Ethernet (PoE) Peak Current PDF
- DN275 - Single Inductor, Tiny Buck-Boost Converter Provides 95% Efficiency in Lithium-Ion to 3.3V Applications PDF
- DN413 - Wide Input Voltage Range Buck-Boost Converter Simplifies Design of Variable Input Supplies PDF
- DN369 - Industry's First 4-Switch Buck-Boost Controller Achieves Highest Efficiency Using a Single Inductor PDF
- DN330 - High Input Voltage Monolithic Switcher Steps Up and Down Using a Single Inductor (Design Note 330A) PDF
- DN307 - Supply 2A Pulses for GSM Transmission from 500mA USB or PCMCIA Ports PDF
Internal Power Switch Buck-Boost
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Output Current (typ) (A) | Vout Min (typ) (V) | Vout Max (typ) (V) | Features | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC3130 | 1 | 2.4 | 25 | 600m | 1 | 25 | Burst Mode, Maximum Power Point Control, Power Good | $3.35 (LTC3130EMSE#PBF) |
| 2 | LTC3119 | 1 | 250m | 18 | 5 | 795m | 18 | Burst Mode, External Synchronization, Maximum Power Point Control, Power Good, Resistor Set Frequency | $7.15 (LTC3119EUFD#PBF) |
| 3 | LTC3335 | 1 | 1.8 | 5.5 | 50m | 1.8 | 5 | Burst Mode, Integrated Coulomb Counter, Power Good | $3.35 (LTC3335EUDC#PBF) |
| 4 | LTC3106 | 1 | 850m | 5.1 | 300m | 1.8 | 5 | Battery Charger, Burst Mode, Maximum Power Point Control, Power Good, PowerPath | $2.94 (LTC3106EUDC#PBF) |
| 5 | LTC3118 | 1 | 2.2 | 18 | 2 | 2 | 18 | Burst Mode, Dual Input, Ideal Diode, Power Good, Prioritizer | $5.75 (LTC3118EUFD#PBF) |
| 6 | LTC3331 | 1 | 3 | 19 | 50m | 1.8 | 5 | Battery Charger, PowerPath | $3.55 (LTC3331EUH#PBF) |
| 7 | LTC3114-1 | 1 | 2.2 | 40 | 1 | 2.7 | 40 | Burst Mode, Programmable Output Current Limit | $3.95 (LTC3114EDHC-1#PBF) |
| 8 | LTC3111 | 1 | 2.5 | 15 | 1.4 | 2.5 | 15 | Burst Mode, External Synchronization | $3.50 (LTC3111EDE#PBF) |
| 9 | ADP5080 | 8 | 4 | 15 | 2 | 800m | 1.2 | I2C Interface, Integrated Charge Pump, Selectable Switching Frequency | $3.99 (ADP5080ACBZ-1-RL) |
| 10 | LTC3115-2 | 1 | 2.7 | 40 | 2 | 2.7 | 40 | Burst Mode, External Synchronization, Resistor Set Frequency | $5.35 (LTC3115EDHD-2#PBF) |
| 11 | LTC3330 | 2 | 3 | 18 | 50m | 1.8 | 5 | Full Wave Bridge Rectifier | $3.55 (LTC3330EUH#PBF) |
| 12 | LTC3129-1 | 1 | 1.92 | 15 | 200m | 2.5 | 15 | Burst Mode, Fixed Output, Maximum Power Point Control, Power Good | $2.95 (LTC3129EMSE-1#PBF) |
| 13 | LTC3129 | 1 | 1.92 | 15 | 200m | 1.4 | 15.75 | Burst Mode, Maximum Power Point Control, Power Good | $2.95 (LTC3129EMSE#PBF) |
| 14 | LTC3536 | 1 | 1.8 | 5.5 | 1 | 1.8 | 5.5 | Burst Mode, External Synchronization, Output Disconnect, Resistor Set Frequency | $2.75 (LTC3536EDD#PBF) |
| 15 | LTC3115-1 | 1 | 2.7 | 40 | 2 | 2.7 | 40 | Burst Mode, External Synchronization, Resistor Set Frequency | $5.35 (LTC3115EDHD-1#PBF) |
| 16 | LTC3112 | 1 | 2.7 | 15 | 2.5 | 2.5 | 14 | Burst Mode, External Synchronization, Output Disconnect, Power Good | $4.00 (LTC3112EDHD#PBF) |
| 17 | LTC3521 | 3 | 1.8 | 5.5 | 1 | 1.8 | 5.25 | Burst Mode, Output Disconnect, Power Good | $3.25 (LTC3521EUF#PBF) |
| 18 | LTC3113 | 1 | 1.8 | 5.5 | 3 | 1.8 | 5.5 | Burst Mode, Output Disconnect, Resistor Set Frequency | $3.95 (LTC3113EDHD#PBF) |
| 19 | LTC3127 | 1 | 1.8 | 5.5 | 1 | 1.8 | 5.25 | Burst Mode, Output Disconnect, Programmable Input Current Limit | $2.95 (LTC3127EDD#PBF) |
| 20 | ADP2504 | 1 | 2.3 | 5.5 | 1 | 2.8 | 5.5 | External Synchronization | $1.44 (ADP2504ACPZ-3.3-R7) |
| 21 | ADP2503 | 1 | 2.3 | 5.5 | 600m | 2.8 | 5.5 | External Synchronization | $1.34 (ADP2503ACPZ-3.3-R7) |
| 22 | LTC3534 | 1 | 2.4 | 7 | 500m | 1.8 | 7 | Burst Mode, Output Disconnect | $3.15 (LTC3534EDHC#PBF) |
| 23 | LTC3520 | 2 | 2.2 | 5.5 | 1 | 800m | 5.25 | 100% Duty Cycle, Burst Mode, LDO, Output Disconnect, Resistor Set Frequency, Sequencing | $3.50 (LTC3520EUF#PBF) |
| 24 | LTC3538 | 1 | 2.4 | 5.5 | 800m | 1 | 5.5 | Burst Mode, Output Disconnect | $2.55 (LTC3538EDCB#TRPBF) |
| 25 | LTC3522 | 2 | 2.4 | 5.5 | 400m | 2.2 | 5.25 | 100% Duty Cycle, Burst Mode, Output Disconnect, Power Good | $2.50 (LTC3522EUD#PBF) |
| 26 | LTC3533 | 1 | 1.8 | 5.5 | 2 | 1.8 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $3.55 (LTC3533EDE#PBF) |
| 27 | LTC3530 | 1 | 1.8 | 5.5 | 600m | 1.8 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $2.75 (LTC3530EDD#PBF) |
| 28 | LTC3532 | 1 | 2.4 | 5.5 | 500m | 2.4 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $2.35 (LTC3532EDD#PBF) |
| 29 | LTC3531-3.3 | 1 | 1.8 | 5.5 | 200m | 3.3 | 3.3 | Burst Mode, Fixed Output, Output Disconnect | $1.95 (LTC3531EDD-3.3#PBF) |
| 30 | LTC3531-3 | 1 | 1.8 | 5.5 | 200m | 3 | 3 | Burst Mode, Fixed Output, Output Disconnect | $1.95 (LTC3531EDD-3#PBF) |
| 31 | LTC3531 | 1 | 1.8 | 5.5 | 200m | 2 | 5 | Burst Mode, Output Disconnect | $1.95 (LTC3531EDD#PBF) |
| 32 | LTC3444 | 1 | 2.7 | 5.5 | 400m | 500m | 5 | Output Disconnect | $2.40 (LTC3444EDD#PBF) |
| 33 | LTC3443 | 1 | 2.4 | 5.5 | 1.2 | 2.4 | 5.25 | Burst Mode, External Synchronization, Output Disconnect | $3.55 (LTC3443EDE#PBF) |
| 34 | LTC3442 | 1 | 2.4 | 5.5 | 1.2 | 2.4 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $3.95 (LTC3442EDE#PBF) |
| 35 | LTC3441 | 1 | 2.4 | 5.5 | 1.2 | 2.4 | 5.25 | Burst Mode, External Synchronization, Output Disconnect | $3.55 (LTC3441EDE#PBF) |
| 36 | LT3433 | 1 | 4 | 60 | 400m | 3.3 | 20 | Burst Mode, Output Disconnect | $3.25 (LT3433EFE#PBF) |
| 37 | LTC3440 | 1 | 2.5 | 5.5 | 600m | 2.5 | 5.5 | Burst Mode, External Synchronization, Output Disconnect, Resistor Set Frequency | $2.74 (LTC3440EMS#PBF) |
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