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 equipped 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