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General Description

The CM2596S series are step-down switching regulators with all required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.

The CM2596S series offers a high-efficiency replacement for popular three-terminal linear regulators. Also it requires a minimum number of external components. It substantially not only reduces the area of board size but also the size of the heat sink, and in some cases no heat sink is required.

±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±15%. External shutdown is included, featuring 150μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

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Features

Guaranteed 3A output current
3.3V, 5V, and adjustable versions
Wide input voltage range, up to 32V
Internal oscillator of 150 KHz fixed frequency
Wide adjustable version output voltage range, from 1.23V to 28V±4% max over line and load conditions
Low standby current, typ. 80μA, at shutdown mode
Requires only 4 external components
Thermal shutdown and current limit protection
Requires only 4 external components
Excellent line and load regulation specifications
TTL shutdown capability

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Applications