• Wide Operating Range: 3V to 18V

• Output Current: 100mA

• 600kΩ Pull-Low Resistor on EN Pin

• 120kHz to 1.25MHz Programmable Oscillator Frequency

• No External Diodes Required

• Low Output Impedance: 15Ω (TYP) at IOUT = 20mA

• CMOS Construction

• -40℃ to +85℃ Operating Temperature Range

• Available in Green TDFN-2×2-8L and SOIC-8 Packages

The SGM3209 is a charge pump voltage converter. It converts a 3V to 18V input to a corresponding -3V to -18V output using the combination of few external components, eliminating inductors and their associated cost, size and EMI. In addition to a wider power supply input range, the SGM3209 can source output currents as high as 100mA. The switching frequency is resistor programmable from 120kHz to 1.25MHz.

The SGM3209 is recommended for designs requiring greater output current and/or lower input/output voltage drop. The SGM3209 enters into shutdown status by external enable control signal to reduce system power dissipation.