The LTM4605 is a high efficiency switching mode buck-boost power supply from Philips. It operates over an input voltage range of 4.5V to 20V and supports an output voltage range of 0.8V to 16V. The maximum output current is 5A. This product uses a single inductor architecture, and the input voltage can be higher, lower, or equal to the output voltage. The LTM4605 uses a high switching frequency and current mode architecture, which provides a very fast transient response to line and load changes. The product also has overvoltage and foldback current protection. The LTM4605 is available in a small, thermally enhanced 15mm x 15mm x 2.8mm LGA package and is RoHS compliant.
The LTM4605 is a high‑efficiency buck‑boost DC/DC module that integrates the switching controller, power FETs and supporting components in a compact 15 mm × 15 mm × 2.8 mm LGA package. It operates from 4.5 V to 20 V input and can be programmed to deliver output voltages from 0.8 V to 16 V.
Typical applications include telecom, server, industrial, automotive and high‑power battery‑operated devices. The module offers current‑mode control, power‑good output signaling, over‑voltage and fold‑back current protection, and can be synchronized to an external clock for reduced harmonic content.
| Input Voltage Range | 4.5 V to 20 V |
|---|---|
| Output Voltage Range | 0.8 V to 16 V |
| Boost Mode Continuous Current | 5 A |
| Buck Mode Continuous Current | 12 A |
| Efficiency | up to 98 % |
| Package Size | 15 mm × 15 mm × 2.8 mm |
| Operating Temperature Range | -40 °C to 85 °C |
| Protection Features | Overvoltage and foldback current protection |
The LTM4605 operates from 4.5 V to 20 V input.
The module can be set to output voltages between 0.8 V and 16 V.
In boost mode it provides up to 5 A continuous current.
It includes over‑voltage protection and fold‑back current protection.