| PartNumber | LTC3544BEUD#TRPBF | LTC3544EUD#PBF | LTC3544BEUD#PBF |
| Description | Switching Voltage Regulators Quad 2.25MHz Synchronous Step-Down DC/DC Converter in QFN | Switching Voltage Regulators Quad 2.25MHz Synchronous Step-Down DC/DC Converter in QFN | Switching Voltage Regulators Quad 2.25MHz Synchronous Step-Down DC/DC Converter in QFN |
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-16 | QFN-16 | QFN-16 |
| Output Voltage | 0.8 V to 5.5 V | 0.8 V to 5.5 V | 0.8 V to 5.5 V |
| Output Current | 0.3 A | 0.3 A | 0.3 A |
| Number of Outputs | 4 Output | 4 Output | 4 Output |
| Input Voltage MAX | 5.5 V | 5.5 V | 5.5 V |
| Topology | Buck | Buck | Buck |
| Input Voltage MIN | 2.25 V | 2.25 V | 2.25 V |
| Switching Frequency | 2.25 MHz | 2.25 MHz | 2.25 MHz |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | LTC3544B | LTC3544 | LTC3544B |
| Packaging | Reel | Tube | Tube |
| Input Voltage | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V |
| Type | Quad Synchronous Step-Down Regulator | Quad Synchronous Regulator | Quad Synchronous Regulator |
| Brand | Analog Devices / Linear Technology | Analog Devices / Linear Technology | Analog Devices / Linear Technology |
| Shutdown | Shutdown | Shutdown | Shutdown |
| Development Kit | DC1040A-B | DC1040A-A | DC1040A-B |
| Load Regulation | 0.5 % | 0.5 % | 0.5 % |
| Operating Supply Current | 0.825 mA | 0.07 mA | 0.825 mA |
| Product Type | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| Factory Pack Quantity | 2500 | 121 | 121 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Operating Temperature Range | - | - 40 C to + 85 C | - 40 C to + 85 C |
| Quiescent Current | - | 70 uA | 70 uA |
| Unit Weight | - | 0.003527 oz | 0.003527 oz |