Datasheet NCP1421 (ON Semiconductor) - 2

NCP1421
VBAT BAT M3 5 ZLC + LX - 0.5 V Chip + V 7 DD V Enable OUT 20 mV TRUE CUTOFF OUT CONTROL LOGIC CONTROL 8 M2 _ZCUR _TSDON VDD SENSEFETt _MSON _MAINSW2ON M1 GND 6 _CEN GND FB + 1 _PFM VDD - PFM _MAINSWOFD _SYNSW2ON REF GND Voltage _SYNSWOFD 4 Reference _VREFOK _ILIM + R - SENSE + LBO 3 1.20 V + GND LBI/EN 2 - GND
Figure 1. Detailed Block Diagram http://onsemi.com 2