VDD OSCIN 16MHz Oscillator OSCOUT ADCIN VREG VBOOT Charge pump Ext. Osc. driver & Clock gen. ADC STBY/RST CP VSA 3V Voltage Reg. FLAG V boot V boot HS A1 VSA HS A2 Registers OUT1A V DD HS A1 OUT2A LS A1 HS A2 LS A1 LS A2 LS A2 Control Logic PGND VSB HS B1 LS B1 CS V boot V boot VSB HS B2 SPI CK SDO LS B2 HS B1 HS B2 OUT1B SDI OUT2B BUSY/SYNC STCK Temperature sensing Current DACs & Comparators LS B1 LS B2 PGND V DD Current sensing SW DGND AGND AM02377v1