Product Overview
LT8608IMSE#TRPBF from ADI is a 42V, 1.5A synchronous buck converter with ultra-low 2.5uA quiescent current in Burst Mode. 200kHz-2.2MHz adjustable frequency. 45ns min on-time. MSOP-10 with exposed pad. TRPBF = tape-and-reel, lead-free.
Working Principle
Synchronous buck with integrated high/low-side MOSFETs. Burst Mode operation maintains efficiency at light loads with <10mV output ripple. Peak current mode control. EN/UV pin with 1V threshold for precision UVLO. Soft-start via TR/SS pin. PG flag for output monitoring.
Pin Description
| Pin | Name | Function |
|---|---|---|
| 1 | BOOT | Bootstrap cap |
| 2 | VIN | 3-42V input |
| 3 | EN/UV | Enable/UVLO |
| 4 | TR/SS | Soft-start |
| 5 | PG | Power good |
| 6 | FB | Feedback |
| 7 | SYNC | Frequency sync |
| 8 | SW | Switching node |
Applications
- Automotive battery-powered systems
- Industrial 24V bus POL
- Battery-powered always-on systems
Alternative Models
| Manufacturer | Part Number | Notes |
|---|---|---|
| ADI | LT8609IMSE#TRPBF | 3A version |
| TI | LM5161DDAR | Similar 42V buck |