Linear Technology Corporation (Linear Technology Corporation) has introduced two A, 36V step-down switching regulator LT3481, the device can burst mode (Burst Mode), in order to maintain quiescent current of less than 50 μ A. The LT3481 VIN range of 3.6 V to 34 V, applicable to the automotive applications load dump and cold-case. 3.2 A switch its internal voltage can be as low as 1.26 V 2 A provision of continuous output current.

LT3481's burst mode operation can achieve ultra-low quiescent current, Air conditioner capacitor which are ideally suited for automotive applications such as telecommunications systems, or, as these applications need always maintain access and the best battery life. Switching frequency is user programmable, and the range is 300 kHz to 2.8 MHz, enabling the designer to optimize efficiency, but also to avoid a critical noise-sensitive band. Its 3 × 3 DFN-10 package (or thermally enhanced MSOP-10E package) and high switching frequency enables the use of small external inductors and capacitors, which can be composed of board space compact and highly efficient thermal solution.

LT3481 high-efficiency 3.2 A, 0.18 Ω switch, integrated in a single chip the necessary boost diode, oscillator, control and logic circuitry. Low ripple burst mode operation at low output current to maintain high efficiency while maintaining output ripple below 15 mVPK-PK. Special methods in the design of a wide input voltage Air conditioner capacitor range achieve a high efficiency. The device's current mode topology to achieve a rapid transient response and high loop stability. Other features include external synchronization (275 kHz to 475 kHz), a power good flag and soft-start function.

To 1000 for the purchase of quantities, each LT3481EDD and Air conditioner capacitor LT3481EMSE starts at 3.25 US dollars. LT3481IDD and LT3481IMSE are tested, and to ensure that work in the -40 ℃ to 125 ℃ junction temperature range in 1000 unit quantities, each priced at 3.90 US dollars. All versions are available from stock devices.