LT1507IS8

500kHz, monolithic buck mode, switching regulator, SOP-8, 25V, 0.3Ω

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PartNumber:: LT1507IS8

Brand:: Linear Technology - Linear | Pack: SOP | D/C: 11+

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Products Upload time: 2012-07-07

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Product Summary

The LT1507IS8 is a 500kHz monolithic buck mode switching regulator, functionally identical to the LT1375 but optimized for lower input voltage applications. It will operate over a 4V to 15V input range, compared with 5.5V to 25V for the LT1375. A 1.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage (3.3V) and adjustable parts are available. The applications of the LT1507IS8 are Portable Computers, Battery-Powered Systems, Battery Charger and Distributed Power.

Parametrics

LT1507IS8 absolute maximum ratings: (1)Input Voltage: 16V; (2)Boost Pin Voltage: 25V; (3)Shutdown Pin Voltage: 7V; (4)FB Pin Voltage (Adjustable Part): 3.5V; (5)FB Pin Current (Adjustable Part): 1mA; (6)Sense Voltage (Fixed 3.3V Part): 5V; (7)Sync Pin Voltage: 7V; (8)Operating Ambient Temperature Range: 0 to 70℃; (9)Max Operating Junction Temperature: 125℃; (10)Storage Temperature Range: –65 to 150℃; (11)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LT1507IS8 features: (1)Constant 500kHz Switching Frequency; (2)Uses All Surface Mount Components; (3)Operates with Inputs as Low as 4V; (4)Saturated Switch Design (0.3Ω); (5)Cycle-by-Cycle Current Limiting; (6)Easily Synchronizable; (7)Inductor Size as Low as 2μH; (8)Shutdown Current: 20μA.