DA9231

Ultra-Low Quiescent Current Buck and LDO

Datasheet

Revision 2.4

3-Sep-2018

CFR0011-120-00 Rev 5

4 of 55

© 2018 Dialog Semiconductor

Figures

Figure 1: Block Diagram ........................................................................................................................ 7

Figure 2: DA9231 Application Diagram ................................................................................................. 7

Figure 3: Pinout Diagram (Top View) .................................................................................................... 8

Figure 4: Buck VOUT = 1.8 V ................................................................................................................ 18

Figure 5: Buck VOUT = 0.9 V ................................................................................................................ 18

Figure 6: Buck VOUT = 1.8 V, LDO VOUT = 0.8 V .................................................................................. 18

Figure 7: Buck VOUT = 0.9 V, LDO VOUT = 0.8 V .................................................................................. 18

Figure 8: High-Side FET...................................................................................................................... 19

Figure 9: Low-Side FET....................................................................................................................... 19

Figure 10: Buck VOUT = 1.9 V .............................................................................................................. 19

Figure 11: Buck VOUT = 1.8 V .............................................................................................................. 19

Figure 12: Buck VOUT = 1.2 V .............................................................................................................. 20

Figure 13: Buck VOUT = 0.9 V .............................................................................................................. 20

Figure 14: Buck VOUT = 0.6 V .............................................................................................................. 20

Figure 15: Buck VOUT = 1.9 V .............................................................................................................. 21

Figure 16: Buck VOUT = 0.9 V .............................................................................................................. 21

Figure 17: Buck VOUT = 1.2 V .............................................................................................................. 21

Figure 18: Buck VOUT = 0.6 V .............................................................................................................. 21

Figure 19: Buck VOUT = 1.9 V .............................................................................................................. 22

Figure 20: Buck VOUT = 1.3 V .............................................................................................................. 22

Figure 21: Buck VOUT = 0.9 V .............................................................................................................. 22

Figure 22: Buck VOUT = 0.6 V .............................................................................................................. 22

Figure 23: Buck VOUT = 1.9 V .............................................................................................................. 23

Figure 24: Buck VOUT = 1.2 V .............................................................................................................. 23

Figure 25: Buck VOUT = 0.9 V .............................................................................................................. 23

Figure 26: Buck VOUT = 0.6 V .............................................................................................................. 23

Figure 27: Buck VIN = 3.6 V, Buck VOUT = 1.8 V, Buck ILOAD = 1 mA ................................................... 24

Figure 28: Buck VIN = 3.6 V, Buck VOUT = 1.8 V, Buck ILOAD = 10 mA ................................................. 24

Figure 29: Buck VIN = 3.6 V, Buck VOUT = 1.8 V, Buck ILOAD = 100 mA ........................................... 24

Figure 30: Buck VIN = 3.6 V, Buck VOUT = 1.8 V, Buck ILOAD = 300 mA ............................................... 24

Figure 31: Buck ILOAD = 10 mA to 300 mA to 10 mA (0.3 A/µs); Buck VIN = 3.6 V, Buck VOUT = 1.8 V 25

Figure 32: Buck ILOAD = 100 mA to 300 mA to 100 mA (0.2 A/µs); Buck VIN = 3.6 V, Buck VOUT = 1.8 V

............................................................................................................................................................. 25

Figure 33: Buck ILOAD = 10 mA to 300 mA to 10 mA (0.3 A/µs); Buck VIN = 3.6 V, Buck VOUT = 1.2 V 25

Figure 34: Buck ILOAD = 100 mA to 300 mA to 100 mA (0.2 A/ µs); Buck VIN = 3.6 V, Buck

VOUT = 1.2 V......................................................................................................................................... 25

Figure 35: Buck ILOAD = 10 mA to 300 mA to 10 mA (0.3 A/µs); Buck VIN = 3.6 V, Buck VOUT = 0.9 V 25

Figure 36: Buck ILOAD = 100 mA to 300 mA to 100 mA (0.2 A/µs); Buck VIN = 3.6 V, Buck VOUT = 0.9 V

............................................................................................................................................................. 25

Figure 37: Buck ILOAD = 10 mA to 300 mA to 10 mA (0.3 A/µs); Buck VIN = 3.6 V, Buck VOUT = 0.6 V 26

Figure 38: Buck ILOAD = 100 mA to 300 mA to 100mA (0.2 A/µs); Buck VIN = 3.6 V, Buck VOUT = 0.6 V

............................................................................................................................................................. 26

Figure 39: Buck VOUT 0.6 V to 1.2 V; Buck VIN = 3.6 V, Buck ILOAD = 300 mA..................................... 26

Figure 40: Buck VOUT 1.2 V to 0.6 V; Buck VIN = 3.6 V, Buck ILOAD = 300 mA..................................... 26

Figure 41: Buck VOUT 1.3 V to 1.9 V; Buck VIN = 3.6 V, Buck ILOAD = 300 mA..................................... 26

Figure 42: Buck VOUT 1.9 V to 1.3 V; Buck VIN = 3.6 V, Buck ILOAD = 300 mA..................................... 26

Figure 43: Device Enable: Buck VIN = 3.6 V, Buck VOUT 1.8 V, Buck ILOAD = 300 mA......................... 27

Figure 44: VOUT ramp-up after Enabled (Zoom-in of Figure 43) .......................................................... 27

Figure 45: Device Enable: Buck VIN = LDO VIN = 3.6 V, Buck VOUT = 1.8 V, LDO VOUT = 3.3 V......... 27

Figure 46: LDO VOUT = 0.8 V ............................................................................................................... 28

Figure 47: LDO VOUT = 2 V .................................................................................................................. 28

Figure 48: LDO VOUT = 3.3 V ............................................................................................................ 28

Figure 49: LDO ILOAD = 5 mA to 100 mA to 5 mA (0.1 A / 1 µs); LDO VIN = 3.6 V, LDO VOUT = 0.8 V 29