Internal Power Switch Buck-Boost Regulators
Analog Devices' monolithic buck/boost synchronous dc-to-dc converters offer high current delivery and operation with a wide range of power sources, including single or multiple cell batteries, supercapacitor stacks and wall adapters. A proprietary 4-switch PWM buck-boost topology provides low noise, jitter-free switching through all operating modes, making them ideal for RF and precision analog applications that are sensitive to power supply noise. 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. Some devices may be paralleled for higher power delivery, or include automatic maximum power point tracking (MPPT) for solar battery charging and MPPT control functions.
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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 Regulators
| 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 | LT3942 | 1 | 3 | 36 | 2 | 0 | 36 | Current Source Reference, External Synchronization, LED Driver, Low EMI, Open LED Detection, Open LED Protection, Output Current Monitor, Output Current Regulation, Resistor Set Frequency, Shorted LED Protection, Spread Spectrum | $2.95 (LT3942EUFD#PBF) |
| 2 | LTC3130 | 1 | 2.4 | 25 | 600m | 1 | 25 | Burst Mode, Maximum Power Point Control, Power Good | $3.35 (LTC3130EMSE#PBF) |
| 3 | LTC3119 | 1 | 250m | 18 | 5 | 795m | 18 | Burst Mode, External Synchronization, Maximum Power Point Control, Power Good, Resistor Set Frequency | $7.15 (LTC3119EUFD#PBF) |
| 4 | LTC3335 | 1 | 1.8 | 5.5 | 50m | 1.8 | 5 | Burst Mode, Integrated Coulomb Counter, Power Good | $3.35 (LTC3335EUDC#PBF) |
| 5 | LTC3106 | 1 | 850m | 5.1 | 300m | 1.8 | 5 | Battery Charger, Burst Mode, Maximum Power Point Control, Power Good, PowerPath | $2.94 (LTC3106EUDC#PBF) |
| 6 | LTC3118 | 1 | 2.2 | 18 | 2 | 2 | 18 | Burst Mode, Dual Input, Ideal Diode, Power Good, Prioritizer | $5.75 (LTC3118EUFD#PBF) |
| 7 | LTC3331 | 1 | 3 | 19 | 50m | 1.8 | 5 | Battery Charger, PowerPath | $3.55 (LTC3331EUH#PBF) |
| 8 | LTC3114-1 | 1 | 2.2 | 40 | 1 | 2.7 | 40 | Burst Mode, Output Current Limit | $3.95 (LTC3114EDHC-1#PBF) |
| 9 | LTC3111 | 1 | 2.5 | 15 | 1.4 | 2.5 | 15 | Burst Mode, External Synchronization | $3.50 (LTC3111EDE#PBF) |
| 10 | ADP5080 | 8 | 4 | 15 | 2 | 800m | 1.2 | I2C Interface, Integrated Charge Pump, Selectable Switching Frequency | $3.99 (ADP5080ACBZ-1-RL) |
| 11 | LTC3115-2 | 1 | 2.7 | 40 | 2 | 2.7 | 40 | Burst Mode, External Synchronization, Resistor Set Frequency | $5.35 (LTC3115EDHD-2#PBF) |
| 12 | LTC3330 | 2 | 3 | 18 | 50m | 1.8 | 5 | Full Wave Bridge Rectifier | $3.55 (LTC3330EUH#PBF) |
| 13 | 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) |
| 14 | LTC3129 | 1 | 1.92 | 15 | 200m | 1.4 | 15.75 | Burst Mode, Maximum Power Point Control, Power Good | $2.95 (LTC3129EMSE#PBF) |
| 15 | LTC3536 | 1 | 1.8 | 5.5 | 1 | 1.8 | 5.5 | Burst Mode, External Synchronization, Output Disconnect, Resistor Set Frequency | $2.75 (LTC3536EDD#PBF) |
| 16 | LTC3115-1 | 1 | 2.7 | 40 | 2 | 2.7 | 40 | Burst Mode, External Synchronization, Resistor Set Frequency | $5.35 (LTC3115EDHD-1#PBF) |
| 17 | LTC3112 | 1 | 2.7 | 15 | 2.5 | 2.5 | 14 | Burst Mode, External Synchronization, Output Disconnect, Power Good | $4.00 (LTC3112EDHD#PBF) |
| 18 | LTC3521 | 3 | 1.8 | 5.5 | 1 | 1.8 | 5.25 | Burst Mode, Output Disconnect, Power Good | $3.25 (LTC3521EUF#PBF) |
| 19 | LTC3113 | 1 | 1.8 | 5.5 | 3 | 1.8 | 5.5 | Burst Mode, Output Disconnect, Resistor Set Frequency | $3.95 (LTC3113EDHD#PBF) |
| 20 | LTC3127 | 1 | 1.8 | 5.5 | 1 | 1.8 | 5.25 | Burst Mode, Input Current Limit, Output Disconnect | $2.95 (LTC3127EDD#PBF) |
| 21 | ADP2504 | 1 | 2.3 | 5.5 | 1 | 2.8 | 5.5 | External Synchronization | $1.44 (ADP2504ACPZ-3.3-R7) |
| 22 | ADP2503 | 1 | 2.3 | 5.5 | 600m | 2.8 | 5.5 | External Synchronization | $1.34 (ADP2503ACPZ-3.3-R7) |
| 23 | LTC3534 | 1 | 2.4 | 7 | 500m | 1.8 | 7 | Burst Mode, Output Disconnect | $3.15 (LTC3534EDHC#PBF) |
| 24 | 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) |
| 25 | LTC3538 | 1 | 2.4 | 5.5 | 800m | 1 | 5.5 | Burst Mode, Output Disconnect | $2.55 (LTC3538EDCB#TRPBF) |
| 26 | LTC3522 | 2 | 2.4 | 5.5 | 400m | 2.2 | 5.25 | 100% Duty Cycle, Burst Mode, Output Disconnect, Power Good | $2.50 (LTC3522EUD#PBF) |
| 27 | LTC3533 | 1 | 1.8 | 5.5 | 2 | 1.8 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $3.55 (LTC3533EDE#PBF) |
| 28 | LTC3530 | 1 | 1.8 | 5.5 | 600m | 1.8 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $2.75 (LTC3530EDD#PBF) |
| 29 | LTC3532 | 1 | 2.4 | 5.5 | 500m | 2.4 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $2.35 (LTC3532EDD#PBF) |
| 30 | 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) |
| 31 | LTC3531-3 | 1 | 1.8 | 5.5 | 200m | 3 | 3 | Burst Mode, Fixed Output, Output Disconnect | $1.95 (LTC3531EDD-3#PBF) |
| 32 | LTC3531 | 1 | 1.8 | 5.5 | 200m | 2 | 5 | Burst Mode, Output Disconnect | $1.95 (LTC3531EDD#PBF) |
| 33 | LTC3444 | 1 | 2.7 | 5.5 | 400m | 500m | 5 | Output Disconnect | $2.40 (LTC3444EDD#PBF) |
| 34 | LTC3443 | 1 | 2.4 | 5.5 | 1.2 | 2.4 | 5.25 | Burst Mode, External Synchronization, Output Disconnect | $3.55 (LTC3443EDE#PBF) |
| 35 | LTC3442 | 1 | 2.4 | 5.5 | 1.2 | 2.4 | 5.25 | Burst Mode, Output Disconnect, Resistor Set Frequency | $3.95 (LTC3442EDE#PBF) |
| 36 | LTC3441 | 1 | 2.4 | 5.5 | 1.2 | 2.4 | 5.25 | Burst Mode, External Synchronization, Output Disconnect | $3.55 (LTC3441EDE#PBF) |
| 37 | LT3433 | 1 | 4 | 60 | 400m | 3.3 | 20 | Burst Mode, Output Disconnect | $3.25 (LT3433EFE#PBF) |
| 38 | 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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