GENERAL DEscriptION

The SGM38042A generates both positive and negative precision regulated voltage power sources with a control scheme for single inductor dual output converter. The positive output is programmable from 2.4V to 6.4V with 100mV per step, and the negative output is programmable from -2V to -3.2V with 50mV per step.

A linear regulator capable of 50mA output current is also integrated. The device is e with 1-Wire interface. With input in the range of 2.7V to 5.5V, the device is optimized for loading 100mA in boost-inverter mode and also works in buck-inverter mode.

The SGM38042A is available in a Green WLCSP-1.51×2.10-15B package. It operates over an ambient temperature range of -40℃ to +85℃.

FEATURES

• Single Inductor for Triple Outputs

• High Efficiency in Wide Output Loading Range

• 850kHz PWM Mode Control Switching Frequency

• Pulse-Skip Operation in Light Load Condition

• Programmable Outputs with 1-Wire Interface

  VCPO = 2.4V to 6.4V

  VCNO = -2V to -3.2V

• Auxiliary Output Rail: Fixed 3.3V, 2.8V or 1.8V

• 100mA Output Current for VCPO and VCNO

• Configurable Active Discharge

• Internal Soft-Start to limit Inrush Current

• Over-Temperature Protection (OTP)

• Over-Current Protection (OCP)

• Short Circuit Protection (SCP)

APPLICATIONS

AMOLED/LCD Smart-Phones/Media-Players

Wearable Device Display