Triple-output DC/DC controller, capable of step-down and step-up operation, features a maximum switching frequency of 900 kHz. This surface-mount component is housed in a 38-pin QFN EP package with an exposed pad, measuring 7mm x 5mm x 0.75mm. Operating from 4.5V to 38V input, it supports output voltages from 0.8V to 24V (60V max) with a typical output current of 25A per output. Designed for automotive applications, it operates within a temperature range of -40°C to 125°C.
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Analog Devices LTC3859AIUHF#TRPBF technical specifications.
| Basic Package Type | Non-Lead-Frame SMT |
| Package Family Name | QFN |
| Package/Case | QFN EP |
| Package Description | Quad Flat No Lead Package, Exposed Pad |
| Lead Shape | No Lead |
| Pin Count | 38 |
| PCB | 38 |
| Package Length (mm) | 7 |
| Package Width (mm) | 5 |
| Package Height (mm) | 0.75(Max) |
| Seated Plane Height (mm) | 0.75 |
| Pin Pitch (mm) | 0.5 |
| Package Material | Plastic |
| Mounting | Surface Mount |
| Topology | Step Down|Step Up |
| Number of Outputs | 3 |
| Output Voltage | 0.8 to 24|60(Max)V |
| Typical Output Current | 25|25A |
| Maximum Switching Frequency | 900kHz |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 125°C |
| Maximum Input Voltage | 38V |
| Minimum Input Voltage | 4.5V |
| Operating Supply Voltage | 4.5 to 38V |
| Maximum Supply Current | 3(Typ)mA |
| Cage Code | 24355 |
| EU RoHS | Yes |
| HTS Code | 8542390001 |
| Schedule B | 8542390000 |
| ECCN | EAR99 |
| Automotive | Yes |
| AEC Qualified | Yes |
| RoHS Versions | 2011/65/EU, 2015/863 |
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