Infineon’s latest switched-mode power supply (SMPS), TLF51801ELV, is a synchronous step-down controller with adjustable output voltage. It is capable of providing 2A to 10A of output current by driving external high- and low-side switches with duty cycles of more than 99 percent. The switching frequency can be adjusted within a range of between 100kHz and 700kHz. It can also be synchronized with an external clock. TLF51801ELV also features an ENABLE function for ultra-low shut-down current and provides two different options for current limitation (external shunt resistor or the RDS(on) of the high-side switch).
TLF51801ELV is available in a thermally enhanced, RoHS-compliant SSOP-14 package with an exposed pad.
Features
- Adjustable output voltage (± 2 %)
- Capable of driving 2 external switches (n/n-MOS) with loads from 2A to 10A
- >99% duty cycle
- Two options for current limitation:
- via high-side sensing (no shunt resistor required)
- via shunt resistor
- ENABLE for low shut-down current (Iq < 2µA)
- Switching frequency: 100kHz to 700kHz
- Sync input and frequency adjustment
Applications
- Infotainment systems
- Clusters
- General-purpose high-load supply
- Pre-regulator
