The LT3988 utilizes dual, high efficiency 1.3A switches, with the necessary boost diodes, oscillator, control and logic circuitry integrated into a single chip. Its catch diode current sense (DA) pins protect the circuit during input voltage transients even at high switching frequencies while adding robust short-circuit protection. Anti-phase switching minimizes both input and output ripple. Special design techniques used in the LT3988 enable high efficiency over a wide input voltage range, and the device’s current mode topology enables fast transient response and excellent loop stability. Other features include external synchronization (from 250kHz to 2.5MHz), internal loop compensation, thermal shutdown and tracking capability.
Pricing for the LT3988EMSE starts at $3.65 each. An industrial temperature grade version, the LT3988IMSE, is tested and guaranteed to operate from -40°C to 125°C operating junction temperature and is priced at $4.20 each. A high temperature version, the LT3988HMSE, is tested and guaranteed to operate from -40°C to 150°C operating junction temperature and is priced at $4.45 each. All prices are for 1,000-piece quantities and all versions are available from stock.