LTC3672BEDC-2#TRPBF
ActiveMONOLITHIC FIXED-OUTPUT 400MA BUCK REGULATOR WITH DUAL 150MA LDOS IN 2MM × 2MM DFN
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LTC3672BEDC-2#TRPBF
ActiveMONOLITHIC FIXED-OUTPUT 400MA BUCK REGULATOR WITH DUAL 150MA LDOS IN 2MM × 2MM DFN
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3672BEDC-2#TRPBF |
|---|---|
| Frequency - Switching | 2.25 MHz |
| Mounting Type | Surface Mount |
| Number of Outputs | 3 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-DFN (2x2) |
| Topology | Step-Down (Buck) Synchronous (1), Linear (LDO) (2) |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 2.9 V |
| Voltage/Current - Output 1 [custom] | 1.2 V |
| Voltage/Current - Output 1 [custom] | 400 mA |
| Voltage/Current - Output 2 | 150 mA, 2.8 V |
| w/LED Driver | False |
| w/Sequencer | False |
| w/Supervisor | False |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 2.94 | |
Description
General part information
LTC3672B-1 Series
The LTC3672B-1 is a triple power supply composed of a 400mA synchronous buck regulator and two 150mA low dropout linear regulators (LDOs), where one of the LDOs can be powered from the buck output to improve efficiency. Constant-frequency 2.25MHz operation is maintained down to very light loads. The input supply range of 2.9V to 5.5V is especially well-suited for single-cell Lithium-Ion and Lithium-Polymer applications, and for powering low voltage ASICs from 3.3V or 5V rails.The LTC3672B-1 regulates 1.8V at the buck output, 1.2V at the LDO1 output, and 2.8V at the LDO2 output. External component count is minimal—all that is needed is a single inductor, an input capacitor, and output capacitors for each of the three outputs. Control loop compensation is internal to the LTC3672B-1.The LTC3672B-1 is available in a 2mm x 2mm x 0.75mm 8-Lead DFN package.Buck VoutLDO 1LDO 2LTC3672B-11.8V1.2V2.8VLTC3672B-21.2V2.8V1.8VApplicationsDMB CellphonesHandheld Products (PDA, PMP, GPS)Multivoltage Power for Digital Logic, I/O, FPGAs, CPLDs, ASICs, CPUs, and RF Chipsets
Documents
Technical documentation and resources