MIC2142

Features:

• 2.2V to 16V input voltage
• Up to 22V output voltage
• 330kHz switching frequency
• 0.1A shutdown current
• 85A quiescent current
• Implements low-power boost, SEPIC, or flyback
• SOT23-5 package




Application

• LCD bias supply
• White LED driver
• 12V Flash memory supply
• Local 3V to 5V conversion




Pinout






Specifications

Supply voltage (VCC) ....................................................18V
Switch voltage (VSW) ................................................... 24V
Enable pin voltage (VEN) Note 3 ...................................18V
Feedback Voltage (VFB)
Adjustable version ................................................8V
Ambient Storage Temperature (TS) .... 65°C to +150°C




Description

The MIC2142 is a micropower boost switching regulator housed in a SOT23-5 package. The input voltage range is between 2.2V to 16V, making the device suitable for one-cell Li Ion and 3 to 4-cell alkaline/NiCad/NiMH applications. The output voltage of the MIC2142 can be adjusted up to 22V.

The MIC2142 is well suited for portable, space-sensitive applications. It features a low quiescent current of 85A, and a typical shutdown current of 0.1A. It's 330kHz operation allows small surface mount external components to be used. The MIC2142 is capable of efficiences over 85% in a small board area.

The MIC2142 can be configured to efficiently power a variety of loads. It is capable of providing a few mA output for supplying low power bias voltages; it is also capable of providing the 80mA needed to drive 4 white LEDs.

The MIC2142 is available in a SOT23-5 package with an ambient operating temperature range from 40°C to +85 °C.