SLVSBD1B December 2012 – August 2025 TPS65175
PRODUCTION DATA
The negative charge pump (CPN) flying capacitor is driven from SWN pin with an intergated 50% duty cycle push-pull stage. The regulation is achieved using an external NPN transistor controlled by the CTRLN pin. The IC is optimized for use with transistors having a DC gain (hFE) in the range 100 to 300; however, it is possible to use transistors outside this range, depending on the application requirements. A typical application circuit is shown in Figure 8-2.
Figure 8-2 Negative Charge Pump Application Circuit