MIC2198YML-TR

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The MIC2198YML-TR is a fixed frequency, internal oscillator, step-up DC-DC switching controller that can generate a 0.5V- to 3.2V output voltage. It operates from a 2.7V to 5.5V input voltage and includes a P-channel driver stage allowing it to source up to 0.8A of peak load current. It is specifically designed for space limited, cost sensitive applications and can be used in a wide range of high efficiency, step-up DC-DC converter designs requiring either a single inductor or a dual inductor approach.

The MIC2198YML-TR is part of MIC’s tinyREC series and is housed in a tiny SOT-23-6 package that provides a highly compact solution for small footprint, step-up DC-DC topologies. It can operate at dynamically adjustable frequencies in the range of 480 kHz to 4 MHz with pulse-width modulated (PWM) step-up control loop.

The MIC2198YML-TR starts with an internal soft start function that limits the inrush current at startup, prevents shoot-through of the FETs, and presents a precision current limit. It also provides fault protection by detecting current and/or voltage limits, and also thermal protection. This protects both the device and the end application by disabling the output stage if the device temperature gets too high.

The MIC2198YML-TR features the Internal Oscillator Mode, which allows for less cycle-by-cycle variation in output current, and favors CCM operation at light load to reduce switching losses in the regulator and improve efficiency. It also includes dynamic voltage scaling (DVS) for applications requiring automatic voltage adjustment dependent on load. Finally, the output voltage can be synchronized to an external clock to reduce EMI.

The MIC2198YML-TR can be used in a wide range of applications such as portable consumer devices, monitors, automotive, and industrial applications. It can be used in buck or boost configuration, or in combination with charging circuits, LED drivers and motor control systems. It is designed to provide efficient, low noise operation, to deliver power to loads while maintaining tight regulation over the specified range of load and supply conditions.

In summary, the MIC2198YML-TR application field includes all space limited and cost sensitive applications requiring step-up DC-DC regulation. The unique features of this device, such as its internal oscillator, small footprint, and P-channel driver stage allow for an optimized solution to achieve tight regulation, accurate current limit, and high efficiency with minimum space constraints. Thus, the MIC2198YML-TR is an ideal solution for cost sensitive, small footprint designs that require step-up DC-DC regulation.

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