The SGM3207 generates an unregulated negative output voltage from an input voltage ranging from 1.4V to 5.5V. The device is typically supplied by a pre-regulated supply rail of 5V or 3.3V. Due to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power them.
Only three external capacitors are required to build a complete DC/DC charge pump inverter. Assembled in a small package, the complete converter can be built on a 50mm2 board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.
The SGM3207 can deliver a maximum output current of 60mA with a typical conversion efficiency of greater than 85% over a wide output current range. The fixed switching frequency is 19kHz.
The SGM3207 is available in a Green SOT-23-5 package. It operates over an ambient temperature range of -40℃ to +85℃.
Inverts Input Supply Voltage
Up to 60mA Output Current
Input Voltage Range from 1.4V to 5.5V
Quiescent Current: 72μA (TYP)
Integrated Active Schottky Diode for Start-Up into Load
-40℃ to +85℃ Operating Temperature Range
Available in a Green SOT-23-5 Package
GaAs Bias for RF Power Amps
Sensor Supply in Portable Instruments
Bipolar Amplifier Supply
|Part Number||Status||Package||Pins||Pb-Free||Temp Range|
|SGM3207YN5G/TR||Production||SOT-23-5||5||Y||-40℃ to +85℃|